An element of the rare earth family of metals. It has the atomic symbol Ce, atomic number 58, and atomic weight 140.12. Cerium is a malleable metal used in industrial applications.
Unstable isotopes of cerium that decay or disintegrate emitting radiation. Ce atoms with atomic weights 132-135, 137, 139, and 141-148 are radioactive cerium isotopes.
Stable cerium atoms that have the same atomic number as the element cerium, but differ in atomic weight. Ce-136, 138, and 142 are stable cerium isotopes.
Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver.
A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.

Salmonella pathogenicity island 2-dependent evasion of the phagocyte NADPH oxidase. (1/177)

A type III protein secretion system encoded by Salmonella pathogenicity island 2 (SPI2) has been found to be required for virulence and survival within macrophages. Here, SPI2 was shown to allow Salmonella typhimurium to avoid NADPH oxidase-dependent killing by macrophages. The ability of SPI2-mutant bacteria to survive in macrophages and to cause lethal infection in mice was restored by abrogation of the NADPH oxidase-dependent respiratory burst. Ultrastructural and immunofluorescence microscopy demonstrated efficient localization of the NADPH oxidase in the proximity of vacuoles containing SPI2-mutant but not wild-type bacteria, suggesting that SPI2 interferes with trafficking of oxidase-containing vesicles to the phagosome.  (+info)

Improvement of efficiency of the Ce(IV)-induced DNA scission--relationship between the kinetic parameters (k(cat) and Km) and the DNA structure. (2/177)

The Michaelis constant (Km) for double-stranded DNA, single-stranded DNA, and dinucleotide hydrolysis by Ce(IV) ion are 4.4, 15, and more than 40 mM, respectively. The order of the k(cat), however, is dinucleotide >> oligonucleotides. Not only the improvement of k(cat) but also that of Km is important for the design of an efficient artificial nuclease.  (+info)

Rapid determination of cyanide and azide in beverages by microdiffusion spectrophotometric method. (3/177)

A rapid screening method was developed for the determination of the toxic volatile anions, cyanide and azide, in beverages. This method consisted of a microdiffusion extraction combined with spectrophotometry using the Konig cyanide reaction and ferric azide complex formation in conjugation with cerium azide oxido-reduction. The time required to achieve full recovery in the extraction of hydrogen cyanide and hydrazoic acid from samples was considerably shortened by increasing the diffusion temperature from 25 degrees C to 40 degrees C. The time required to achieve saturated color development in the Konig cyanide reaction was also shortened by increasing incubation temperature to 40 degrees C. The interference in both azide color reactions was examined for volatile compounds. Cyanide interfered only in the case of ferric azide complex formation. Sulfide, sulfate, nitrite, and acetic acid interfered in both the color reactions. The established method gave a detection limit of 6 microM for cyanide and 0.5mM for azide, and it required only 1 h to determine both anions. Cyanide and azide disappeared by evaporation from beverages during 25 degrees C storage under open conditions in a pH-dependent manner as a function of their respective pKa values of 9.2 and 4.6.  (+info)

Anoxic stress leads to hydrogen peroxide formation in plant cells. (4/177)

Hydrogen peroxide (H2O2) was detected cytochemically in plant tissues during anoxia and re-oxygenation by transmission electron microscopy using its reaction with cerium chloride to produce electron dense precipitates of cerium perhydroxides. Anoxia-tolerant yellow flag iris (Iris pseudacorus) and rice (Oryza sativa), and anoxia-intolerant wheat (Triticum aestivum) and garden iris (Iris germanica) were used in the experiments. In all plants tested, anoxia and re-oxygenation increased H2O2 in plasma membranes and the apoplast. In the anoxia-tolerant species the response was delayed in time, and in highly tolerant I. pseudacorus plasma membrane associated H2O2 was detected only after 45 d of oxygen deprivation. Quantification of cerium precipitates showed a statistically significant increase in the amount of H2O2 caused by anoxia in wheat root meristematic tissue, but not in the anoxia-tolerant I. pseudacorus rhizome parenchyma. Formation of H2O2 under anoxia is considered mainly an enzymatic process (confirmed by an enzyme inhibition analysis) and is due to the trace amount of dissolved oxygen (below 10(-5) M) present in the experimental system. The data suggest oxidative stress is an integral part of oxygen deprivation stress, and emphasize the importance of the apoplast and plasma membrane in the development of the anoxic stress response.  (+info)

Feasibility studies in rats fed heavy metals as multiple nutrient markers. (5/177)

The nitrates of five metals (cerium, terbium, ytterbium, lutetium, and iridium) were fed to rats to determine the feasibility of their use as nonabsorbed, multiple markers for recovery, passage, and indirect apparant digestibility studies. Fecal recovery of a single oral dose was completed within 72 hours. When the salts were mixed into the diet, 48-96 hours was required to establish a steady-state concentration of markers in feces. The diurnal variation of cerium in feces was found to be considerable when it was fed twice daily as a single dose prior to each feeding. When incorporated into the diet, negligible diurnal variation in fecal concentration was noted with lutetium, and small variation was seen with other metals. In nutrient apparent digestibility studies, good agreement was generally found between direct and indirect multiple marker methods. Experiments with a daily intake marker suggest that cerium was not satisfactory as a multiple marker in which neutron activation analysis was the method of determination.  (+info)

Induction of early bolting in Arabidopsis thaliana by triacontanol, cerium and lanthanum is correlated with increased endogenous concentration of isopentenyl adenosine (iPAdos). (6/177)

The effects of triacontanol (TRIA), applied singly or in combination with cerium nitrate and lanthanum nitrate, on bolting of Arabidopsis thaliana were studied. Triacontanol (0.1 to 0.6 microM) added to the culture medium induced early bolting. TRIA (0.3 microM) applied with low concentrations of cerium and lanthanum caused a synergistic stimulation of bolting. In medium containing 0.3 microM TRIA, 0.1 microM cerium nitrate and 0.1 mM lanthanum nitrate, 82% of the plants bolted 20 d after seed sowing compared to only 8.6% in basal medium and 47.8% in medium with TRIA only. The changes in the endogenous concentrations of total cytokinins of the isopentenyl adenine (IP) subfamily in the leaf and root tissues were correlated with TRIA-induced early bolting. The combined treatment of TRIA (0.3 microM), cerium nitrate (0.1 microM) and lanthanum nitrate (0.1 mM) resulted in a significant increase in the endogenous concentrations of total cytokinins of the IP subfamily in the root and leaf tissues compared to plants growing in the basal medium and medium with TRIA. The exogenous application of six natural cytokinins to the plants revealed that only isopentenyl adenosine (iPAdos) was as effective as TRIA on floral bud formation. iPAdos was also found to have similar effects as TRIA on root growth and reproductive growth. These results suggest a correlation between the early bolting induced by TRIA, cerium and lanthanum and the production of higher concentrations of endogenous iPAdos.  (+info)

X-ray imaging of shock waves generated by high-pressure fuel sprays. (7/177)

Synchrotron x-radiography and a fast x-ray detector were used to record the time evolution of the transient fuel sprays from a high-pressure injector. A succession of 5.1-microsecond radiographs captured the propagation of the spray-induced shock waves in a gaseous medium and revealed the complex nature of the spray hydrodynamics. The monochromatic x-radiographs also allow quantitative analysis of the shock waves that has been difficult if not impossible with optical imaging. Under injection conditions similar to those found in operating engines, the fuel jets can exceed supersonic speeds and result in gaseous shock waves.  (+info)

Measurement of dissolved oxygen based on enhanced cerium(IV) chemiluminescence. (8/177)

The reaction of Ce(IV) with pyrogallol caused chemiluminescence, which was enhanced by dissolved oxygen. Dissolved oxygen in water was able to help in the determination by enhancing the chemiluminescence intensity. The limit of detection calculated from 3sigma was 43 micromol/dm3, and the relative standard deviation was 1.2% at 613 micromol/dm3 (n = 5). The results obtained for natural and tap water samples were compared with those provided by conventional methods; the agreement between them corroborated the usefulness of the proposed method. The chemiluminescence mechanism was studied by examining the effect of interference with Cl- and measuring the chemiluminescence spectrum. The chemiluminescence emitter, however, could not be identified.  (+info)

Cerium is a chemical element with the symbol "Ce" and atomic number 58. It belongs to the lanthanide series in the periodic table and is the second element in this series. Cerium is a solid at room temperature, with a silver-white appearance and has a face-centered cubic crystal structure.

In medicine, cerium oxide nanoparticles have been studied for their potential therapeutic applications, particularly in neurodegenerative diseases such as Alzheimer's and Parkinson's disease. These nanoparticles are believed to have antioxidant properties that can help protect neurons from oxidative stress and inflammation. However, more research is needed to fully understand the safety and efficacy of cerium-based therapies in medical treatments.

Cerium is a naturally occurring element found in the Earth's crust, and it has several radioisotopes, which are radioactive isotopes or forms of cerium. These isotopes have unstable nuclei that emit radiation as they decay into more stable forms. Here are some examples of cerium radioisotopes:

* Cerium-134: This radioisotope has a half-life of about 3.12 days, which means that half of its atoms will decay into other elements in this time period. It decays by emitting beta particles and gamma rays.
* Cerium-137: This is a long-lived radioisotope with a half-life of about 2.5 years. It decays by emitting beta particles and gamma rays, and it can be used in medical imaging and cancer treatment. However, if released into the environment, it can pose a radiation hazard to humans and other organisms.
* Cerium-141: This radioisotope has a half-life of about 32.5 days, and it decays by emitting beta particles and gamma rays. It is produced in nuclear reactors and can be used for research purposes.
* Cerium-144: This radioisotope has a half-life of about 284 days, and it decays by emitting beta particles and gamma rays. It is produced in nuclear reactors and can be used for research purposes.

It's important to note that handling and working with radioisotopes requires proper training and protective measures to ensure safety and prevent radiation exposure.

Cerium is a naturally occurring element found in the Earth's crust, and it has several stable and unstable (radioactive) isotopes. Isotopes are variants of an element that have the same number of protons but different numbers of neutrons in their atomic nuclei. The unstable cerium isotopes undergo radioactive decay, emitting radiation in the process.

The stable isotopes of cerium include:

* Cerium-140 (^140 Ce)
* Cerium-142 (^142 Ce)

The unstable or radioactive isotopes of cerium include:

* Cerium-135 (^135 Ce), with a half-life of about 2.2 trillion years
* Cerium-136 (^136 Ce), with a half-life of about 13 days
* Cerium-137 (^137 Ce), with a half-life of about 30 years
* Cerium-138 (^138 Ce), with a half-life of about 4.5 days
* Cerium-139 (^139 Ce), with a half-life of about 137 days
* Cerium-141 (^141 Ce), with a half-life of about 32 days
* Cerium-143 (^143 Ce), with a half-life of about 1.4 days
* Cerium-144 (^144 Ce), with a half-life of about 285 days

These radioactive isotopes are produced in nuclear reactions, such as those that occur in nuclear reactors or during nuclear weapons testing. They can be used for medical and industrial purposes, but they must be handled carefully due to their radioactivity.

Medical definitions generally refer to terms and concepts within the medical field. The term "metal nanoparticles" is more commonly used in materials science, chemistry, and physics. However, I can provide a general scientific definition that could be relevant to medical applications:

Metal nanoparticles are tiny particles with at least one dimension ranging from 1 to 100 nanometers (nm), composed of metals or metal compounds. They have unique optical, electronic, and chemical properties due to their small size and high surface-to-volume ratio, making them useful in various fields, including medical research. In medicine, metal nanoparticles can be used in drug delivery systems, diagnostics, and therapeutic applications such as photothermal therapy and radiation therapy. Examples of metals used for nanoparticle synthesis include gold, silver, and iron.

Rare earth metals, also known as rare earth elements, are a group of 17 metallic elements found in the periodic table. They include:

1. Lanthanum (La)
2. Cerium (Ce)
3. Praseodymium (Pr)
4. Neodymium (Nd)
5. Promethium (Pm)
6. Samarium (Sm)
7. Europium (Eu)
8. Gadolinium (Gd)
9. Terbium (Tb)
10. Dysprosium (Dy)
11. Holmium (Ho)
12. Erbium (Er)
13. Thulium (Tm)
14. Ytterbium (Yb)
15. Lutetium (Lu)
1

An example of a cerium compound used on its own as an inorganic pigment is the vivid red cerium(III) sulfide (cerium sulfide ... Water should not be used to stop cerium fires, as cerium reacts with water to produce hydrogen gas. Workers exposed to cerium ... Cooling below approximately −160 °C will start formation of α-cerium but this is only from remaining γ-cerium. β-cerium does ... Greenwood and Earnshaw, p. 1228 Klaus Reinhardt and Herwig Winkler in "Cerium Mischmetal, Cerium Alloys, and Cerium Compounds" ...
Na2Se The reduction of cerium selenide by cerium dihydride can also produce cerium monoselenide: Ce2Se3 + CeH2 → 3 CeSe + H2↑ ... Cerium monoselenide is an inorganic compound with the chemical formula CeSe. It exists in the form of Ce3+Se2−(e−). Cerium ... Like many other rare earth monochalcogenides, Cerium monoselenide has metallic-type electrical conductivity and a NaCl-type ... Cerium(III) compounds, Selenides, Rock salt crystal structure). ... monoselenide can be obtained by reducing cerium selenide with ...
... may refer to: Cerium(III) fluoride (cerium trifluoride), CeF3 Cerium(IV) fluoride (cerium tetrafluoride), CeF4 ...
... may refer to: Cerium(III) hydroxide, Ce(OH)3, cerium trihydroxide Cerium(IV) hydroxide, Ce(OH)4, cerium ...
... are compounds containing the element cerium (Ce), a lanthanide. Cerium exists in two main oxidation states, Ce ... Cerium nitrates also form 4:3 and 1:1 complexes with 18-crown-6 (the ratio referring to that between cerium and the crown ether ... Cerium is the only lanthanide which has important aqueous and coordination chemistry in the +4 oxidation state. Cerium forms ... Cerium(IV) salts, especially cerium(IV) sulfate, are often used as standard reagents for volumetric analysis in cerimetric ...
... is a binary inorganic compound of cerium and sulfur with the chemical formula CeS. This is the simplest of ... CeS Reduction reaction of dicerium trisulfide and cerium hydride: Ce2S3 + CeH2 → 3CeS + H2 Cerium sulfide forms yellow ... "Cerium Monosulfide". American Elements. Retrieved 4 April 2023. Gibbard, Kevin B.; Allahar, Kerry N.; Kolman, David; Butt, ... It can react violently with platinum to form an intermetallic compound, platinum cerium. Perry, Dale L. (19 April 2016). ...
... may refer to: Cerium(III) oxide, Ce2O3, also known as dicerium trioxide Cerium(III, IV) oxide, Ce3O4 (dark blue) ... Cerium(IV) oxide, CeO2, also known as ceric oxide This set index article lists chemical compounds articles associated with the ...
... may refer to: Cerium diiodide, CeI2 Cerium(III) iodide (Cerium triiodide), CeI3 This set index article lists ...
Basic cerium(IV) nitrate has the formula Ce(NO3)3.OH.3H2O. It also forms upon evaporation of solutions of cerium(IV) in nitric ... Cerium nitrate refers to a family of nitrates of cerium in the +3 or +4 oxidation state. Often these compounds contain water, ... Double nitrates of cerium also exist. Anhydrous cerous nitrate, also called cerium(III) nitrate, is the anhydrous salt with the ... 2H2O is a hexanuclear cerium oxido and hydroxido complex. It can be dehydrated to form [Ce6O(OH)8(NO3)8]. Cerium magnesium ...
... is a metal-organic compound, a salt of cerium and stearic acid with the chemical formula C 54H 105CeO 6. The ... Cerium stearate is synthesized from the reaction of cerium oxide with stearic acid in an inert atmosphere at temperatures ... "Cerium Stearate". American Elements. Retrieved 3 March 2023. "CAS 14536-00-6 Cerium(3+)stearate - Alfa Chemistry". alfa- ... "Buy Cerium stearate - 10119-53-6 , BenchChem". .benchchem.com. Retrieved 3 March 2023. Marques, Eduardo F.; Burrows, Hugh D.; ...
... (CeB6, also called cerium boride, CeBix, CEBIX, and (incorrectly) CeB) is an inorganic chemical, a boride of ... Cerium boride cathodes show lower evaporation rate at 1700 K than lanthanum boride, but it becomes equal at 1850 K and higher ... Cerium boride cathodes have one and half the lifetime of lanthanum boride, due to its higher resistance to carbon contamination ... The principal use of cerium hexaboride is a coating of hot cathodes. It usually operates at temperature of 1450 °C. Lanthanum ...
The cerium anomaly, in geochemistry, is the phenomenon whereby cerium (Ce) concentration is either depleted or enriched in a ... Cerium Europium Europium anomaly Lanthanides Rare-earth elements Stratigraphic trends in cerium anomaly in authigenic marine ... Because cerium is one of only two REEs that can obtain an oxidation number of +4, Ce4+ is absorbed into Mn(IV) oxides instead ... The cerium anomaly relates to the decrease in solubility, which accompanies the oxidation of Ce(III) to Ce(IV). Under reducing ...
... can be obtained from the reduction of cerium(III) iodide with metallic cerium under vacuum at 800 °C to 900 °C ... Cerium diiodide is an opaque dark solid with a metal-like appearance and properties. There is no cerium(II) in cerium diiodide ... Cerium diiodide is an iodide of cerium, with the chemical formula of CeI2. ... The reaction forms an ammonia complex of cerium diiodide, which decomposes to cerium diiodide under vacuum at 200 °C. Ce + 2 ...
Cerium(III) oxalate (cerous oxalate) is the inorganic cerium salt of oxalic acid. It is a white crystalline solid with the ... Cerium salts increase the blood coagulation rate, and exposure to cerium salts can cause sensitivity to heat. Oxalates are ... "Cerium(III) Oxalate, Anhydrous". American Elements. Retrieved 2019-03-26. "KEGG DRUG: Cerium oxalate". KEGG DRUG Database. ... Cerium(III) oxalate irritates skin and mucous membranes, and is a strong irritant to eyes. If it gets into the eyes, there is a ...
... can be produced by fluorinating cerium(III) fluoride or cerium dioxide with fluorine gas at 500 °C 2 C e F ... hydrofluoric acid and cerium(IV) sulfate solution at 90°C. Cerium(IV) fluoride can dissolve in DMSO, and react to form the ... "Cerium(IV) Fluoride". American Elements. 无机化学丛书 第七卷 钪 稀土元素 (Series of Inorganic Chemistry. Vol. 7. Scandium. Rare Earth ... Cerium(IV) fluoride is an inorganic compound with a chemical formula CeF4. It is a strong oxidant that appears as a white ...
... can be produced by reacting cerium(III) carbonate and acetic acid, then oxidizing it with hydrogen ... Cerium(IV) hydroxide, also known as ceric hydroxide, is an inorganic compound with the chemical formula Ce(OH)4. It is a ... 5 H2O If using cerium(III) nitrate as ingredient, a similar reaction occurs: 2 Ce(NO3)3 + 3 H2O2 + 6 NH3·H2O → 2 Ce(OH)3(OOH ...
... , Cerium, Lists of isotopes by element). ... The isotopes of cerium range in atomic weight from 119 u (119Ce ... Naturally occurring cerium (58Ce) is composed of 4 stable isotopes: 136Ce, 138Ce, 140Ce, and 142Ce, with 140Ce being the most ... "Standard Atomic Weights: Cerium". CIAAW. 1995. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04 ...
"Cerium triacetate". pubchem.ncbi.nlm.nih.gov. Arii T, Kishi A, Ogawa M, et al. Thermal decomposition of cerium (III) acetate ... Cerium acetate can be prepared by reacting cerium(III) carbonate and 50% acetic acid in an aqueous solution: Ce2(CO3)3 + 6 ... Cerium acetate is an inorganic compound with the chemical formula of Ce(CH3COO)3. It is a white powder that is soluble in water ... Its thermal decomposition at 310 °C will generate basic cerium(III) acetate, which will be further decomposed to obtain ...
... is formed by the calcination of cerium oxalate or cerium hydroxide. Cerium also forms cerium(III) oxide, Ce 2O ... Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare- ... Reinhardt, Klaus; Winkler, Herwig (2000). "Cerium Mischmetal, Cerium Alloys, and Cerium Compounds". Ullmann's Encyclopedia of ... Cerium(IV) oxide occurs naturally as the mineral cerianite-(Ce). It is a rare example of tetravalent cerium mineral, the other ...
... can be used as a starting point for the preparation of other cerium salts, such as the Lewis acid cerium( ... Cerium(III) chloride (CeCl3), also known as cerous chloride or cerium trichloride, is a compound of cerium and chlorine. It is ... ISBN 3-13-103021-6. Johnson, C. R.; Tait, B. D. (1987). "A cerium(III) modification of the Peterson reaction: methylenation of ... The anhydrous halide may alternatively be prepared from cerium metal and hydrogen chloride. It is usually purified by high ...
... is used in the production of cerium(III) chloride, and in incandescent lamps. "Cerium(III) Carbonate Ce2( ... IUPAC name: Cerium tricarbonate. Other chemical names: Dicerium tricarbonate, Cerium(III) carbonate, Cerium carbonate, Cerous ... Cerium(III) carbonate Ce2(CO3)3, is the salt formed by cerium(III) cations and carbonate anions. Its pure form was not yet ... The molecular weight of the compound of cerium(III) carbonate is 460.2587g/mole. ...
Cerium Zinc-cerium battery Kreh, Robert P. (2001). "Cerium (III) Methanesulfonate". Encyclopedia of Reagents for Organic ... Cerium(III) methanesulfonate in solution is used as a precursor of electrogenerated cerium(IV), which is a strong oxidant and ... Cerium(III) methanesulfonate is a white salt, usually found as the dihydrate with the formula Ce(CH3SO3)3·2H2O that ... The same principle of Ce(IV) electrogeneration is the fundamental reaction in the positive half-cell of the zinc-cerium battery ...
... , also called ceric sulfate, is an inorganic compound. It exists as the anhydrous salt Ce(SO4)2 as well as a ... It was historically produced by direct reaction of fine, calcined cerium (IV) oxide and concentrated sulfuric acid, yielding ... ISBN 0-8493-0487-3. Mariappan Periasamy, Ukkiramapandian Radhakrishnan "Cerium(IV) Ammonium Sulfate" Encyclopedia of Reagents ...
The cerium ions are 9-coordinate and adopt a tricapped trigonal prismatic geometry. The cerium-bromine bond lengths are 3.11 Å ... Cerium(III) bromide is an inorganic compound with the formula CeBr3. This white hygroscopic solid is of interest as a component ... The compound has been known since at least 1899, when Muthman and Stützel reported its preparation from cerium sulfide and ...
... is a hydroxide of the rare-earth metal cerium. It is a pale white powder with the chemical formula Ce(OH) ... 3. Cerium(III) hydroxide is prepared by the reaction of hot water at 90 °C on cerium metal: 2 Ce + 6 H 2 O → 90 ∘ C 2 Ce ( OH ...
... (or cerium trifluoride), CeF3, is an ionic compound of the rare earth metal cerium and fluorine. It ... The crystal structure of cerium(III) fluoride is described as the LaF3 or tysonite structure. It contains 9-coordinate cerium ... although it can be considered 11-coordinate if two more distant fluorides are considered part of the cerium coordination ... Cerium(III) compounds, Fluorides, Lanthanide halides, All stub articles, Inorganic compound stubs). ...
... is the name given to solid solutions of cerium(IV) oxide, CeO2, and uranium(IV) oxide, UO2, of variable ... Cerium uranium blue was first obtained by heating together cerium sulfate and uranyl sulfate with an excess of magnesium ... Magneli, Arne; Kihlborg, Lars (1951). "On the Cerium Dioxide-Uranium Dioxide System and "Uranium Cerium Blue"" (PDF). Acta Chem ... A similar series of solid solutions are formed between cerium(IV) oxide and thorium oxide. The blue colour is due to an intense ...
Xie, Z.; Liu, Q.; Chang, Z.; Zhang, X. (2013). "The developments and challenges of cerium half-cell in zinc-cerium redox flow ... self-discharge was relatively slow at low concentrations of cerium and acid. Major installation of the zinc-cerium redox flow ... The positive electrolyte is a solution of cerium(III) methanesulfonate. The zinc-cerium redox flow battery was first proposed ... "Electrochemical behavior of carbon paper on cerium methanesulfonate electrolytes for zinc-cerium flow battery". Electrochimica ...
Cerium(IV) tetrakis(acetylacetonate) Cerium acetylacetonate at American Elements Behrsing, Thomas; Bond, Alan M.; Deacon, Glen ... Cerium(III) acetylacetonate is a compound with formula Ce(C5H7O2)3(H2O)x. It is typically isolated as the trihydrate. Partial ... Cerium acetylacetonate is a precursor to mesoporous nanocrystalline ceria using the sol-gel process. It can also be used along ... doi:10.1016/S0020-1693(03)00147-6. "Formation of mesoporous nanocrystalline ceria from cerium nitrate, acetate or ...
Cerium(IV) sulfate Cerium(III) nitrate (Articles without EBI source, Articles without KEGG source, ECHA InfoCard ID from ... Cerium(III) sulfate, also called cerous sulfate, is an inorganic compound with the formula Ce2(SO4)3. It is one of the few ... Cerium(III) sulfate tetrahydrate is a white solid that releases its water of crystallisation at 220 °C. It has (like the white ... Cerium(III) sulfate (anhydrous) is a hygroscopic white solid, which begins to decompose above 600°C. It has a monoclinic ...
An example of a cerium compound used on its own as an inorganic pigment is the vivid red cerium(III) sulfide (cerium sulfide ... Water should not be used to stop cerium fires, as cerium reacts with water to produce hydrogen gas. Workers exposed to cerium ... Cooling below approximately −160 °C will start formation of α-cerium but this is only from remaining γ-cerium. β-cerium does ... Greenwood and Earnshaw, p. 1228 Klaus Reinhardt and Herwig Winkler in "Cerium Mischmetal, Cerium Alloys, and Cerium Compounds" ...
... is AudioCodes One Voice for Skype for Business Partner. Driving solid business benefits through the convergence ... Cerium Networks is an AudioCodes VAR/SI. Driving solid business benefits through the convergence of data, voice, and video into ...
This WebElements periodic table page contains reactions of elements for the element cerium ... Reaction of cerium with the halogens. Cerium metal reacts with all the halogens to form cerium(III) halides. So, it reacts with ... Reaction of cerium with air. Cerium metal tarnishes slowly in air and burns readily to form cerium (IV) oxide, CeO2. ... cerium(III) chloride, CeCl3, cerium(III) bromide, CeBr3, and cerium(III) iodide, CeI3. ...
The Arcteryx Mens Cerium LT Jacket is a streamlined cold weather coat providing puffy warmth in a lightweight and ... Rated 4 out of 5 by JBD7 from The second best mid layer from arc I own both the cerium lt and the hooded cerium and I must say ... The Arcteryx Mens Cerium LT Jacket is a streamlined cold weather coat providing puffy warmth in a lightweight and ... Return it and got the cerium lt. Under a sabre shell its perfect. standing still at minus 5 celsius the jacket kept me comfy. ...
Cerium oxide nanomaterials (nanoceria, CNMs) are receiving increased attention from the research community due to their unique ... cerium oxide nanoparticles, oxidation state, orthogonal analysis, XPS, EELS cerium oxide nanoparticles, oxidation state, ... Cerium oxide nanomaterials (nanoceria, CNMs) are receiving increased attention from the research community due to their unique ... Approaches for the Quantitative Analysis of Oxidation State in Cerium Oxide Nanomaterials. ...
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Significance and Use 4.1 This test method may be used to confirm in the presence of rare earths the stated cerium content of ... liquid pure cerium or rare earth driers manufactured for use in the coatings industry.Scope 1.1 This test method covers the ... Standard Test Method for Cerium in Paint Driers by Oxidimetric Determination. Standard Test Method for Cerium in Paint Driers ... 4.1 This test method may be used to confirm in the presence of rare earths the stated cerium content of liquid pure cerium or ...
CeO4, CeBO3, and Ce(BO2)3 species are formed in cerium rich glasses. ... Cerium thus behaves more as a glass modifier in low cerium content and plays the dual role at higher CeO2 concentration. ... This reveals that the former role of cerium may become more dominant in glass riches with cerium oxide (50 mol%). In such a ... In this regard, few structural studies on binary cerium borate glasses have been done [5] [9] [12] [25] . Changing in cerium ...
SC.Cerite at The Wooden Periodic Table Table by Theodore Gray
SC.Miserite at The Wooden Periodic Table Table by Theodore Gray
This mischmetal has not been alloyed with iron, as it would be in a flint: Its a mixture of predominantly cerium (54% cerium ... If cerium will do, then so will lanthanum, or half a dozen others. A case in point is lighter "flints" which are actually made ... of a mixture of rare earths, primarily cerium and lanthanum, alloyed with iron. The exact ratio of rare earths in a given ...
Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium ... Cerium wis named efter the dwarf planet Ceres (itsel named for the Roman goddess o agricultur). Cerium is the maist abundant o ... Cerium is a chemical element wi seembol Ce an atomic nummer 58. It is a saft, silvery, ductile metal which easily oxidizes in ... Cerium oxide is an important component o gless polishin pouders an phosphors uised in screens an fluorescent lamps. It is uised ...
cerium is often defined as a metallic chemical element cerium Definition. Cerium is a chemical element with the symbol Ce and ... List of words that contain cerium Words containing cerium List of anagrams and unscrambled of cerium Anagrams + Unscrambles Of ... How may anagrams can you make from cerium? There are 1 anagrams of cerium. These include : *cerium ... How much does cerium score in a game of Scrabble?. Playing cerium scores 10 points in a game of Scrabble. This assumes no use ...
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Uses: As an ore of rare earth metals especially thorium, cerium and Lanthanum, radioactive dating uses and as mineral specimens ... Chemistry: (Ce, La, Th, Nd, Y)PO4, Cerium Lanthanum Thorium Neodymium Yttrium Phosphate. ... Monazite-(Ce) is not only enriched in cerium it is also by far the most common of the three and is probably the actual mineral ... Monazite is a primary ore of several rare earth metals most notably thorium, cerium and lanthanum. All these metals have ...
Cerium (Ce) is the rare earth element with the highest content in light rare earth ore. Solvent extraction is the most ... After acid leaching of rare earth minerals, leaching solution was obtained, and cerium oxide of products of high purity was ... When Ce was extracted into organic phase, pure cerium solution can be obtained by stripping, and then cerium products can be ... The high purity cerium oxide can be produced by calcination of these cerium products. ...
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Cerium oxide is well known to exfoliate from the surface of cerium metal in the same way that rust exfoliates from iron or ... Cerium metal foil was first anodized into adherent porous cerium hydroxide film, followed by calcination for conversion into ... the ease with which cerium changes between Ce3+ and Ce4+ states. These properties, combined with the abundance of cerium on ... The effect on the catalytic activity of cerium oxide caused by varying the density of oxygen vacancy defects (OVD) has not been ...
Photoabsorption Studies of Some Closed-shell ions in the Cerium Isonuclear Sequence. Publication Type : Conference Paper ... Cite this Research Publication : Sindhu Kalyadan, "Photoabsorption Studies of Some Closed-shell ions in the Cerium Isonuclear ... HomePublicationsPhotoabsorption Studies of Some Closed-shell ions in the Cerium Isonuclear Sequence ...
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Bamberger, C E. Thermochemical cyclic system for decomposing H/sub 2/O and/or CO/sub 2/ by means of cerium-titanium-sodium- ... Bamberger, C E. Thermochemical cyclic system for decomposing H/sub 2/O and/or CO/sub 2/ by means of cerium-titanium-sodium- ... DOE Patents Patent: Thermochemical cyclic system for decomposing H/sub 2/O and/or CO/sub 2/ by means of cerium-titanium-sodium- ... Title: Thermochemical cyclic system for decomposing H/sub 2/O and/or CO/sub 2/ by means of cerium-titanium-sodium-oxygen ...
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Scintillation luminescence of cerium-doped borosilicate glass containing rare-earth oxide Author(s): Chun Jiang; QingJi Zeng; ... It was concluded that higher light yield and density make this glass become promising candidate for cerium doped dense glass ...
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... Kullgren, Jolla Uppsala universitet, Sweden.ORCID iD: 0000-0003-3570-0050 ... Here we conclude that there is currently only one type of cerium basis set available in the literature that is able to give a ... and cerium sesquioxide (Ce2O3). We demonstrate that B3LYP is able to describe CeO2 and Ce2O3 reasonably well. When compared to ... and 30 electrons are attributed to the valence space of cerium. Basis sets based on 46 electron ECPs fail for these materials ...
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  • The use of cerium oxide nanoparticles has potential as a sunscreen agent to protect skin from UV damage. (world-english.org)
  • It was found that the number of stable OVDs on cerium oxide nanoparticles and nanotubes can be increased with annealing at elevated temperatures under low pressure. (unl.edu)
  • Cerium Oxide nanoparticles are excellent oxidation resistant materials. (amprox.com)
  • Cerium Oxide nanoparticles have also applications in the field of catalysis as a catalyst or catalyst support. (amprox.com)
  • More dramatically, metallic cerium can be highly pyrophoric: Ce + O2 → CeO2 Being highly electropositive, cerium reacts with water. (wikipedia.org)
  • Cerium oxide can be described as an inorganic compound, with chemical formula CeO2. (tatayoung.com)
  • Sample compounds that contain Cerium are CeO2, [Ce(NH3)6][FeCl4]3, CeB6, Ce(SO4)2, Ce2(SO4)3, Ce(IO3)4. (webqc.org)
  • Cerium oxide (CeO2) nanoparticle s are one such material used in a variety of products, including solar cells and gas sensors. (cdc.gov)
  • Objective: Assess nanoceria (cerium oxide, CeO2 nanoparticle) uptake time course and organ distribution, cellular and oxidative stress, and bioprocessing as a function of mouse strain. (cdc.gov)
  • Data supporting the publication "Thermodynamic Evolution of Cerium Oxide Nanoparticle Morphology Using Carbon Dioxide" DOI : 10.1021/acs.jpcc.0c07437 URL : https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.0c07437 Contained within are the the initial and final configurations from the VASP calculations. (hud.ac.uk)
  • When combined with oxygen in a nanoparticle formulation, Cerium oxide adopts a fluorite crystalline structure that emerges as a promising material. (nanografi.com)
  • Cerium Oxide nanoparticle is used in electronics as buffer layer for superconductors and polishing media for electronic devices. (amprox.com)
  • The role of valence state in cerium oxide nanoparticle toxicity. (cdc.gov)
  • The silvery white metal cerium is quite electropositive and reacts slowly with cold water and quite quickly with hot water to form cerium hydroxide, Ce(OH) 3 , and hydrogen gas (H 2 ). (webelements.com)
  • Cerium metal foil was first anodized into adherent porous cerium hydroxide film, followed by calcination for conversion into ceria membranes. (unl.edu)
  • Cerium is a soft, ductile, and silvery-white metal that tarnishes when exposed to air. (wikipedia.org)
  • If cerium will do, then so will lanthanum, or half a dozen others. (theodoregray.com)
  • A case in point is lighter "flints" which are actually made of a mixture of rare earths, primarily cerium and lanthanum, alloyed with iron. (theodoregray.com)
  • This mischmetal has not been alloyed with iron, as it would be in a flint: It's a mixture of predominantly cerium (54% cerium is a common for mischmetal), with most of the remainder being lanthanum. (theodoregray.com)
  • Uses: As an ore of rare earth metals especially thorium, cerium and Lanthanum, radioactive dating uses and as mineral specimens. (galleries.com)
  • Monazite is a primary ore of several rare earth metals most notably thorium, cerium and lanthanum. (galleries.com)
  • We also supply cerium (III) chloride, cerium (III) fluoride anhydrous, cerium (IV) oxide and cerium oxide. (newmet.com)
  • 4.1 This test method may be used to confirm in the presence of rare earths the stated cerium content of liquid pure cerium or rare earth driers manufactured for use in the coatings industry. (astm.org)
  • After acid leaching of rare earth minerals, leaching solution was obtained, and cerium oxide of products of high purity was obtained by extraction and stripping. (intechopen.com)
  • High purity Cerium sample for collectors & display. (unitednuclear.com)
  • High purity cerium has applications in magnetic alloys. (newmet.com)
  • The perfect down jacket for city-living or layering in harsher environments, Canada's finest outdoor experts Arc'Teryx share their Cerium SL hooded down jacket. (endclothing.com)
  • The Arc'teryx Women's Cerium LT Hoody is a down jacket for lightweight warmth in the backcountry. (backpackers.com)
  • A look at Arc'teryx's latest super lightweight series of down jackets, Cerium, which work well as a mid-layer in the chillier seasons and a standalone jacket in spring and summer. (fionaoutdoors.co.uk)
  • The Arc'teryx Cerium SL (Super Light) jacket is the lightest in the new down series and boasts "Down Composite Mapping", which means that down has been strategically placed in the core (and hood, if the jacket has a hood) for maximum warmth, while Coreloft™ synthetic insulation is utilised in the areas where moisture may build up but where maximum warmth is not usually required, such as arms and underarms. (fionaoutdoors.co.uk)
  • See Arc'teryx women's Cerium SL jacket and Men's Cerium SL jacket . (fionaoutdoors.co.uk)
  • Cerium is the second element in the lanthanide series, and while it often shows the oxidation state of +3 characteristic of the series, it also has a stable +4 state that does not oxidize water. (wikipedia.org)
  • The cerium oxidation state in such complexes is discussed intensively, whereas contradictory results are reported [2]. (science24.com)
  • Cerium metal reacts with all the halogens to form cerium(III) halides. (webelements.com)
  • Cerium tarnishes easily, reacts with water and burns when heated. (newmet.com)
  • The X-ray diffraction of cerium rich glass is clearly indicated that the formation of crystalline phases refer s to CeO 4 , CeBO 3 and Ce(BO 2 ) 3 species. (scirp.org)
  • Electron microscopy showed intracellular nanoceria particles bioprocessed to form crystalline cerium phosphate nanoneedles. (cdc.gov)
  • Nanoceria uptake, initiation of bioprocessing, and crystalline cerium phosphate nanoneedle formation were rapid. (cdc.gov)
  • Today, cerium and its compounds have a variety of uses: for example, cerium(IV) oxide is used to polish glass and is an important part of catalytic converters. (wikipedia.org)
  • The great importance of cerium ions is known [13] - [19] to come from their interesting characteristics such as physical, optical, catalytic and as well as magnetic properties. (scirp.org)
  • Cerium is used as a catalyst in petroleum refining and automotive catalytic converters. (world-english.org)
  • Cerium oxide (ceria, CeO 2-x where x is 0 to 0.5) has been one of the most widely used heterogeneous catalysts particularly in three way catalytic converters. (unl.edu)
  • The effect on the catalytic activity of cerium oxide caused by varying the density of oxygen vacancy defects (OVD) has not been previously studied experimentally. (unl.edu)
  • Despite always occurring in combination with the other rare-earth elements in minerals such as those of the monazite and bastnäsite groups, cerium is easy to extract from its ores, as it can be distinguished among the lanthanides by its unique ability to be oxidized to the +4 state in aqueous solution. (wikipedia.org)
  • Cerium oxide powder is an excellent oxidation resistant material. (nanografi.com)
  • We also make an extensive comparison of atomic basis sets suitable for periodic calculations of these cerium oxides. (diva-portal.org)
  • Cerium oxide nanomaterials (nanoceria, CNMs) are receiving increased attention from the research community due to their unique chemical properties, most prominent of which is their ability to alternate between the Ce3+ and Ce4+ oxidation states. (nist.gov)
  • These properties, combined with the abundance of cerium on earth, make ceria a low-cost highly effective alternative to noble metal catalysts. (unl.edu)
  • The chemical equilibrium reactions on the catalysts surface under low pressure were hypothesized to explain the unusual increase in the OVD density of the reported cerium oxide nanostructured catalysts. (unl.edu)
  • This glass for hard disks is conventionally polished using a fine powder of a cerium oxide, but cerium is a rare-earth element in short supply. (raremetalblog.com)
  • The cerium dioxide pure product is a white cubic crystal or heavy powder. (tatayoung.com)
  • In contrast, both macrophage phenotypes show identical nanoceria biotransformation to cerium phosphate nanoneedles and simultaneous nanoceria with ferritin co-precipitation within the cells. (cdc.gov)
  • Catalyst crystal of cerium dioxide with a small copper oxide on the surface, imaged by electron microscopy. (lu.se)
  • Cerium is a chemical element with the symbol Ce and atomic number 58. (wikipedia.org)
  • Cerium is a chemical element wi seembol Ce an atomic nummer 58. (wikipedia.org)
  • Cerium atomic weight is 140.1161 amu. (webqc.org)
  • Sindhu Kalyadan, "Photoabsorption Studies of Some Closed-shell ions in the Cerium Isonuclear Sequence," NCAMP-XX, 9 - 12 December, 2014, IIST Trivandrum. (amrita.edu)
  • Most lanthanides can use only three electrons as valence electrons, as afterwards the remaining 4f electrons are too strongly bound: cerium is an exception because of the stability of the empty f-shell in Ce4+ and the fact that it comes very early in the lanthanide series, where the nuclear charge is still low enough until neodymium to allow the removal of the fourth valence electron by chemical means. (wikipedia.org)
  • These basis sets are based on a 28 electron effective core potential (ECP) and 30 electrons are attributed to the valence space of cerium. (diva-portal.org)
  • Cerium has various uses such as in alloys, as a catalyst, in glass and as a component in carbon arc lighting. (world-english.org)
  • Cerium oxide micron-particles have been reported to have multienzyme, including superoxide oxidase, catalase and oxidase, mimetic properties, and has emerged as a fascinating and lucrative material in biological fields such as in bioanalysis, biomedicine and drug delivery. (nanografi.com)
  • Cerium metal tarnishes slowly in air and burns readily to form cerium (IV) oxide, CeO 2 . (webelements.com)
  • We supply cerium in foil and rod forms. (newmet.com)
  • Cerium is the second element of the lanthanide series. (wikipedia.org)
  • Cerium belongs to the lanthanide series and is the most abundant and widely distributed of the rare-earth elements. (world-english.org)
  • Cerium metal is used in ferrocerium lighters for its pyrophoric properties. (wikipedia.org)
  • Cerium is used in the manufacture of ferrocerium, which is a material used in lighters to produce sparks. (world-english.org)
  • Cerium metal dissolves readily in dilute sulphuric acid to form solutions containing the colourless aquated Ce(III) ion together with hydrogen gas, H 2 . (webelements.com)
  • Both γ and β forms are quite stable at room temperature, although the equilibrium transformation temperature is estimated at 75 °C. At lower temperatures the behavior of cerium is complicated by the slow rates of transformation. (wikipedia.org)
  • Cerium is added to magnesium alloys to improve their high-temperature creep resistance. (world-english.org)
  • Valiathan SM, Kartha CC. Endomyocardial fibrosis--the possible connexion with myocardial levels of magnesium and cerium. (medscape.com)
  • 1.1 This test method covers the titrimetric determination of cerium in liquid cerium and rare earth paint driers and utilizes ferrous ammonium sulfate. (astm.org)
  • Cerium, which is the first element in the lanthanide group with 4f electrons, has attracted much attention from researchers in physics, chemistry, biology and materials science. (nanografi.com)
  • Cerium Nitrate Treatment in the Management of Burns. (bvsalud.org)
  • The change of chemical shift of 11 B nuclei upon exchanging B 2 O 3 with CeO 2 confirms that the central boron atoms would be coordinated with tetrahedral cerium atoms as second neighbors. (scirp.org)
  • Changing in cerium environment around boron central atoms explains the dominant role of cerium oxide when it enters to the glass matrix as a glass former. (scirp.org)
  • Cerium thus behaves more as a glass modifier in low cerium content and plays the dual role at higher CeO 2 concentration. (scirp.org)
  • The glass samples have been prepared by the normal melting method using cerium oxide (CeO 2 ) and boric oxide (H 3 BO 3 ) as starting materials. (scirp.org)
  • The compound cerium oxide is used as a polishing agent for glass and stones. (world-english.org)
  • It was concluded that higher light yield and density make this glass become promising candidate for cerium doped dense glass scintillator. (spie.org)
  • Cerium is used in the production of flints for cigarette lighters and firearms. (world-english.org)
  • Cerium is the maist abundant o the rare yird elements , makin up aboot 0.0046% o the Yird's crust bi wicht. (wikipedia.org)
  • Dredge concentrates contain abundant uranothorianite, a mineral species which incorporates cerium subgroup ree. (cdc.gov)
  • In this paper we evaluate the performance of density functional theory with the B3LYP functional for calculations on ceria (CeO 2 ) and cerium sesquioxide (Ce 2 O 3 ). (diva-portal.org)
  • Because of this property of cerium oxide micron powders, they are used in oxidation resistant coatings, oxygen sensors, and oxygen pumps. (nanografi.com)
  • Cerium (Ce) is the rare earth element with the highest content in light rare earth ore. (intechopen.com)
  • Cerium is an element number 58 from n/a family. (webqc.org)
  • A centimeter-sized sample of cerium metal corrodes completely in about a year. (wikipedia.org)