Reactions catalyst. Medical search. Frequent questions

The atomic scale structure of the active sites in heterogeneous catalysts is central to their reactivity and selectivity. (nature.com)
Each state of the catalyst exhibits distinct selectivity for the dehydrogenation of ethanol reaction with the single-atom alloy phase exhibiting high selectivity to acetaldehyde and hydrogen versus a range of products from Pd clusters. (nature.com)
First-principles based Monte Carlo calculations explain the origin of this active site ensemble size tuning effect, and this work serves as a demonstration of what should be a general phenomenon that enables in situ control over catalyst selectivity. (nature.com)
Together, these findings illustrate that the atomic-scale structure of the active sites in bimetallic catalysts has a critical effect on their chemical reactivity and selectivity. (nature.com)
The determination of the influence of Cl substitution with respect to reactivity and stability of the RuO2 catalyst in the CO oxidation may constitute a first necessary step towards a prospective, knowledge-based adjustment of catalytical activity and selectivity of the RuO2 catalyst for more complex oxidation reactions. (uni-giessen.de)
In the first part of the thesis an ESI -MS screening method is described, which allows the determination of a chiral catalyst´s selectivity in the palladium catalyzed asymmetric allylic alkylation by testing its racemic form. (cuvillier.de)
Conversion, selectivity and catalyst characterisation data from paper figures. (birmingham.ac.uk)
Particularly, there is a growing interest in the development of one-pot tandem catalytic systems combining the reactivity of a chemical catalyst with the selectivity engendered by the active site of an enzyme. (illinois.edu)
Some of these methods have contributed significantly for enhancing the scope of nitration reaction but very little work has been done on the region selectivity of phenol over alumina as a catalyst [15]. (theburningofrome.com)
Although precious metal-based mixed metal oxides (MMOs) have been used as CER catalysts for more than half a century, they intrinsically suffer from a selectivity problem between the CER and parasitic oxygen evolution reaction (OER). (jecst.org)

Also, Pd nanoparticles (NPs) are needed for the methane oxidation reaction, and the decomposition of the NPs into single Pd atoms at high temperatures leads to a drop in reactivity 18 . (nature.com)
Mixing ligands on paddlewheel complexes offers a versatile handle for diversifying catalyst structure and reactivity. (unboundmedicine.com)
Furthermore, emphasis has been put on the complex pattern of mobility of the Cl atoms, observed to be strongly influenced by the chemical nature of the coadsorbed species (O and CO). The introduction of chlorine atoms as a further component of the RuO2 catalyst induces a change not only in the stability of the oxide but also in its reactivity. (uni-giessen.de)
Next, we summarize the design strategies for new CER electrocatalysts that can enhance the reactivity of MMO-based catalysts and overcome their scaling relationship, which include the doping of MMO catalysts with foreign metals and the development of non-precious metal-based catalysts and atomically dispersed metal catalysts. (jecst.org)
Hydrogen surface concentration is the key parameter determining the reactivity of adsorbed CO and the reaction pathways for methane formation. (ntnu.no)

The mechanism of this reaction involves the initial dissociation of one or two triphenylphosphine ligands to give 14- or 12-electron complexes, respectively, followed by oxidative addition of H2 to the metal. (wikipedia.org)
Flavoproteins are catalysts in a number of mitochondrial oxidative and reductive reactions and function as electron transporters. (medscape.com)
respiratory burst (the rapid release of Reactions of oxygen radicals with Mitochondrial oxidative phosphor- reactive oxygen species from cells) cel ular components can deplete an- ylation is a major source of oxy- that involves nicotinamide adenine tioxidants, can cause direct oxidative gen radicals of endogenous origin. (who.int)
These electrons and holes are free fuels that can be extracted from the exposed photoelectrode using efficient reductive and oxidative catalysts. (lu.se)

article{ author = "Elezović, Nevenka R. and Babić, Biljana M. and Radmilović, Velimir R and Krstajić, Nedeljko V", year = "2013", abstract = "The oxygen reduction reaction was studied at Pt nanocatalysts on two different tin oxide based supports, Sb-SnO2 and Ru-SnO2, in acid solution. (ac.rs)

As reported in the news article, while Dr Baker - who is a co-author in the current study - and his team succeeded in designing enzymes for the MBH reaction, these enzymes acted weakly. (europa.eu)
The facilitation of biochemical reactions with the aid of naturally occurring catalysts such as ENZYMES. (bvsalud.org)
Enzymes are nature's catalysts, assisting in chemical reactions without reacting themselves, and they exist in everything that is alive in order to enable organisms to digest food. (lu.se)

10 Moreover, a further step toward environmentally friendly synthetic routes is represented by the application of solid catalysts 11 and by the development of solventless processes. (designer-drug.com)

Therefore, in situ control of the structure of the active sites in bimetallic catalysts should offer a way to tune reaction networks and achieve efficient conversion to the desired products. (nature.com)
The combination of Cu and Ni in bimetallic catalysts on ZrO 2 , leads to a more efficient HDO of stearic acid. (osti.gov)

This paper focuses on the synthesis and characterization of Pt/ceria WGS catalysts prepared using supercritical fluid deposition (SCFD), a technique by which organometallic precursors are adsorbed from a supercritical fluid solvent on to a support. (confex.com)

Herein, we report the photocatalytic decarboxylative alkenylation reactions of N -(acyloxy)phthalimide derived from α-amino and α-hydroxy acids with 1,1-diarylethene, and with cinnamic acid derivatives through double decarboxylation, using NaI and PPh 3 as redox catalysts. (rsc.org)
MnO x catalysts exhibit excellent activity at low temperature owing to their excellent redox properties and variable valence states. (aaqr.org)

Furthermore air- and moisture-stable secondary phosphine oxide ( SPO ) containing bidentate ligands were tested in the palladium-catalyzed asymmetric allylic alkylation reaction. (cuvillier.de)
Vanadium-phosphorus oxide (VPO) catalysts are used in many processes of hydrocarbons oxidation, ammonium-containing VPO for ammoxidation of substituted toluenes. (science24.com)
Density functional theory calculations and micro kinetic modeling are employed to elucidate structure-property-activity relationships for carbon dioxide and methane adsorption and activation on complex oxide catalysts with controlled structure, composition, and electronic properties. (aiche.org)
The oxygen reduction reaction was studied at Pt nanocatalysts on two different tin oxide based supports, Sb-SnO2 and Ru-SnO2, in acid solution. (ac.rs)
Determined small loss of electrochemical active surface area of the Pt catalyst on Sb doped tin oxide support, after repetitive cycling, indicated high stability and durability of this cathode for-prospective fuel cells application. (ac.rs)
TY - JOUR AU - Elezović, Nevenka R. AU - Babić, Biljana M. AU - Radmilović, Velimir R AU - Krstajić, Nedeljko V PY - 2013 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/695 AB - The oxygen reduction reaction was studied at Pt nanocatalysts on two different tin oxide based supports, Sb-SnO2 and Ru-SnO2, in acid solution. (ac.rs)

Abundant of surface groups including Si-NH 2 (5.5 mmol g −1 ), Si-C 3 H 7 (1.7 mmol g −1 ), and Si-OH (6.1 mmol g −1 ) coexisted on the surface enabled this novel material to be a very efficient catalyst for the Aldol condensation reaction between benzaldehyde and n -heptanal. (magritek.com)
Consequently, the development of a new general, efficient catalyst for the title reactions is welcomed, especially a new heterogeneous one. (designer-drug.com)
Concentrated H2SO4 has been currently used as the most effective and efficient catalyst in a large-scale liquid phase nitration process. (theburningofrome.com)

Among the various types of electrocatalysts, dual-site catalysts have emerged as a new frontier. (rsc.org)
Herein, we present an in-depth review on recent developments in Pt-Cu based nanostructures from the viewpoint of electrocatalysts for various reactions. (korea.ac.kr)
Efficient electrocatalysts for the oxygen evolution reaction (OER) are paramount to the development of electrochemical devices for clean energy and fuel conversion. (nature.com)
Benchmarking hydrogen evolving reaction and oxygen evolving reaction electrocatalysts for solar water splitting devices. (nature.com)

However, it requires high catalyst loadings and has long reaction times with existing catalysts (normally small-molecule catalysts such as DABCO and DMAP) , taking several days to produce a useful amount of product. (europa.eu)
Results showed that low concentrations of BH32.14 added to the MBH reaction can achieve much larger yields than high loadings of current small-molecule catalysts. (europa.eu)
Such tandem catalytic systems can achieve levels of chemo-, regio-, and stereo-selectivities that are unattainable with a small molecule catalyst. (illinois.edu)

The predicted overall kinetics has a U onset (10 mA cm −2 ) of −0.99 V to generate CO, and the maximum turnover frequency reaches 961 h −1 per site at U = −1.18 V. The competitive hydrogen evolution reaction (HER) has a greater negative onset potential and does not interfere with the CO 2 RR. (rsc.org)
In a chlor-alkali electrolyzer, the chlorine evolution reaction (CER, Equation 1 ) generates gaseous Cl 2 at the anode, which is counterbalanced by the hydrogen evolution reaction (HER) at the cathode ( Fig. 1 ) [ 1 , 2 , 4 ]. (jecst.org)

A new approach for elucidating reaction mechanism of complex reactions, such as Fischer-Tropsch (F-T) synthesis, is presented. (ntnu.no)
Diffusion limitation in the liquid-filled pores of Fischer-Tropsch catalysts causes a increase of the H2/CO ratio inside the catalyst pellets, which negatively affects the chain-growth parameter alpha. (eurokin.org)

The electrochemical CO 2 reduction reaction (CO 2 RR) is being accepted as one of the most promising strategies to convert carbon emissions to valuable chemicals and fuels. (rsc.org)
The methanol oxidation reaction (MOR) at the anode and oxygen reduction reaction (ORR) at the cathode are the main processes that determine the performance of DMFCs. (dst.gov.in)
The electrocatalytic activity for the methanol oxidation reaction and the oxygen reduction reaction was characterized. (syr.edu)

Historically, Wilkinson's catalyst has been a paradigm in catalytic studies leading to several advances in the field such as the implementation of some of the first heteronuclear magnetic resonance studies for its structural elucidation in solution (31P), parahydrogen-induced polarization spectroscopy to determine the nature of transient reactive species, or one of the first detailed kinetic investigation by Halpern to elucidate the mechanism. (wikipedia.org)
In the presence of strong base and hydrogen, Wilkinson's catalyst forms reactive Rh(I) species with superior catalytic activities on the hydrogenation of internal alkynes and functionalized tri-substituted alkenes. (wikipedia.org)
However, the iron catalyst is unstable and less reactive when exposed to air and moisture, so these limitations need to be fixed before it will be able to replace ruthenium. (cosmosmagazine.com)
The physical nature and reactive surface properties of some of these may affect their ability to induce dermal toxicity thus causing adverse skin reactions. (cdc.gov)
Metabolism of glutathione peroxidase, can further inflammation, and - along with oth- many exogenous agents through cy- convert these reactive species to er radical species - play key roles tochrome P450-mediated reactions wate r (Benzie, 2000) . (who.int)

The species and amount of the surface groups are closely related with the catalytic performance for a heterogeneous catalyst. (magritek.com)
In connection with our interest in the application of heterogeneous catalysis for fine chemicals preparation 13 with particular interest in the organicinorganic hybrid materials, 14 we planned to find a new heterogeneous catalyst able to promote both (i) the Henry reaction and (ii) the Michael reaction of nitroalkanes to electron-poor alkenes under solventless conditions. (designer-drug.com)

In order to compare the catalytic activities, we used the prepared catalysts in the isomerizations of butane and n-heptane, hydroisomerization of heptane, aldol condensation, acylation, esterification, and cracking of cumene. (elsevierpure.com)
Pt catalysts on Sb and Ru doped SnO2 support exhibited catalytic activities comparable to Pt on commercial carbon based support. (ac.rs)

The electrochemical chlorine evolution reaction (CER) is an important electrochemical reaction and has been widely used in chlor-alkali electrolysis, on-site generation of ClO − , and Cl 2 -mediated electrosynthesis. (jecst.org)
Standardized benchmarking of water splitting catalysts in a combined electrochemical flow cell/inductively coupled plasma-optical emission spectrometry (ICP-OES) setup. (nature.com)

15 The most commonly applied protocols to perform the above reactions require the use of basic catalysts under both homogeneous and heterogeneous conditions. (designer-drug.com)
Such stacked 2D materials are essential for the construction of future and very powerful electronic devices, while dense arrays of functional groups attached to a 2D material is a very interesting starting point for immobilization of homogeneous catalysts. (lu.se)

In this study, we explored the catalyst‐free one‐pot multi‐component synthesis of 1,4‐dihydropyridine derivatives by following green chemistry protocol. (researchgate.net)
Reaxys enables you to search by structure, substructure, reaction, text, and property data.Being based on the CrossFire Beilstein, CrossFire Gmelin and Patent Chemistry databases Reaxys has a long history beginning with chemical data from 1771. (lu.se)

Herein we describe theoretical calculations which predict that carbon monoxide can be used to stabilize different active site geometries in bimetallic alloys and then demonstrate experimentally that the same PdAu bimetallic catalyst can be transitioned between a single-atom alloy and a Pd cluster phase. (nature.com)
In metal alloy catalysts, the driving force for such changes is often derived from differences in the binding strength of an adsorbate to the different metallic components of the alloy. (nature.com)
An alloy of Cobalt and Platinum when doped with Manganese has been found to be an effective catalyst for methanol oxidation reaction (MOR) that takes place at the anode of the direct methanol fuel cells (DMFCs) which is an attractive alternate power source for a large number of energy applications. (dst.gov.in)
This alloy catalyst also showed better tolerance toward CO poisoning. (dst.gov.in)
Taking into account availability and cost, the development of Pt bimetallic alloy nanocatalysts containing earth abundant elements is of vital interest in advancing technologies that depend on electrocatalytic reactions. (korea.ac.kr)
In this regard, a number of studies on Pt-Cu based alloy nanocrystals have been performed for various electrocatalytic oxidation/reduction reactions owing to their novel physico-chemical properties. (korea.ac.kr)

In the work published in ACS Applied Materials and Interfaces recently the NCL-CeNS researchers have prepared a series of trimetallic Pt 100-x (MnCo) x catalysts. (dst.gov.in)

The recent advances in the study of the Hantzsch and Biginelli reactions involving polyfluoroalkyl-3-oxo esters are analyzed. (researchgate.net)

The present approach shows the significant outcomes such as yield up to 94%, catalyst‐free reaction, easy workup procedure and shorter period of reaction time. (researchgate.net)
This benzoylation features short reaction time, good yields, and easy workup procedures. (stackexchange.com)

In this work, we applied the recently developed grand canonical potential kinetics (GCP-K) method to determine the reaction mechanism and kinetics of the CO 2 RR on Fe&Ni@g-N 6 . (rsc.org)
However, fundamental challenges such as slow kinetics, high manufacturing costs (due mostly to the pricey Pt-based catalyst), and CO poisoning of the Pt catalyst make commercialization of DMFCs challenging. (dst.gov.in)
Based on grand canonical quantum mechanics calculations and the single-site Co atomic structure validated by in situ and ex situ spectroscopic probes, we have established a full description of the catalytic reaction kinetics for Co-TiO 2 as a function of applied potential, revealing an adsorbate evolution mechanism for the OER. (nature.com)

A device that can do this - a solar fuel cell - is a complicated machine with light-collecting molecules and catalysts", said Villy Sundström. (lu.se)

Recent research provides evidence that catalysts having extremely low loadings of these metals can still exhibit high activity, as the degree of reaction rate enhancement depends on interfacial area between active metal sites and oxides. (confex.com)
MMO catalysts exhibit decade-long stability and superior CER activity even under corrosive conditions [ 6 , 7 ]. (jecst.org)

However, an in-depth understanding of the reaction mechanism has not been achieved. (rsc.org)
Unlike the traditional CO 2 RR mechanism on transition metals or single-atom catalysts, the Fe-Ni dual site is firstly passivated by strongly adsorbed *CO, and the real active site of the CO 2 RR cycle is at the exposed single Fe site. (rsc.org)
By this all reaction intermediates postulated for an enamine mechanism have been detected. (cuvillier.de)

These reactions have been studied, using spectroscopic methods, to propose plausible mechanistic pathways. (uni-rostock.de)
It led also to a clarification of two carbon pools namely CH2O* (Cα) and CHx* (Cβ) and two corresponding reaction pathways for methane formation. (ntnu.no)

The results described herein illustrate how mixed ligand catalysts can create new opportunities for the optimization of catalytic asymmetric processes. (unboundmedicine.com)
This work was dedicated to the development and evaluation of new chiral catalysts for asymmetric C-C and C-H bond forming reactions. (cuvillier.de)
During this work as well a new organo-catalyst, based on the structure of 2,3-dihydrobenzo[1,4]oxazine, was developed which allows for the asymmetric organo-catalyzed transfer-hydrogenation of α,β-unsaturated aldehydes. (cuvillier.de)
Furthermore, the catalytic and organometallic studies on Wilkinson's catalyst also played a significant role on the subsequent development of cationic Rh- and Ru-based asymmetric hydrogenation transfer catalysts which set the foundations for modern asymmetric catalysis. (wikipedia.org)

The Schotten-Baumann reaction is an organic reaction used to convert an acyl halide or anhydride to an amide, if reacted with an amine and base, or an ester, if reacted with an alcohol and base. (stackexchange.com)
From days to just hours: Researchers have created the first efficient and selective biocatalyst for a powerful, but usually slow organic reaction. (europa.eu)
In search of such catalysts, scientists supported in part by the EU-funded enzC-Hem project have engineered an enzyme that can speed up an organic reaction well known for its extremely slow reaction rate. (europa.eu)

Nitration is an important chemical reaction widely used in commercial manufacturing of various nitro-aromatics. (theburningofrome.com)
The compound is widely used as a catalyst for hydrogenation of alkenes. (wikipedia.org)
The olefin metathesis reaction is among the most widely applicable catalytic reactions for carbon-carbon double bond formation," explains lead author Satoshi Takebayashi, a researcher at the Okinawa Institute of Science and Technology Graduate University (OIST), Japan. (cosmosmagazine.com)
In this regard, the highly efficient click reaction, copper (I)-catalyzed alkyne - azide cycloaddition , has been widely applied not only for its efficiency but also for its tolerance of the appended carbohydrate groups. (bvsalud.org)

Catalysts composed of noble metals and reducible metal oxides are of great significance for modern energy applications. (confex.com)
Alloying Pt with other transition metals such as (Ru, Co, Ni, and Fe) is thought to be a useful strategy for improving the catalytic performance and durability of Pt catalyst along with reducing the amount of Pt being used in the catalyst. (dst.gov.in)
But many catalysts are made of precious metals that can be expensive and harmful to the environment. (cosmosmagazine.com)
to superoxide or that "autoxidize", and when coupled with catalase Oxygen radicals clearly contribute to probably through reactions catalysed within peroxisomes or with cytosolic genomic instability, are produced by by transition metals. (who.int)

The sulfated zirconia catalysts were prepared by the equilibrium adsorption method and the ammonium sulfate kneading method using the reference catalysts JRC-ZRO-2, -3, -4, and -5, supplied by the Reference Catalyst Division of the Catalysis Society of Japan. (elsevierpure.com)
The catalysts were characterized by elemental analysis, NH 3 -TPD, XRD, TG-DTA, CO 2 -TPD, Raman spectroscopy, and measurements of the surface area, pore size distribution, coverage (by the BAT method), and heat of Ar adsorption. (elsevierpure.com)

An intensive screening of both the organo-catalyst and the palladium-ligand led to reaction conditions which allowed for the selective mono-allylation of ketones in high yields. (cuvillier.de)
Homeopathic Ligand-Free Palladium as a Catalyst in the Heck Reaction. (rug.nl)
Palladacycles merely serve as a source of ligand-free palladium in Heck reactions of aryl bromides. (rug.nl)
Triphenylphosphine serves as both a ligand and a two-electron reducing agent that oxidizes itself from oxidation state (III) to (V). In the synthesis, three equivalents of triphenylphosphine become ligands in the product, while the fourth reduces rhodium(III) to rhodium(I). RhCl3(H2O)3 + 4 PPh3 → RhCl(PPh3)3 + OPPh3 + 2 HCl + 2 H2O Wilkinson's catalyst is best known for catalyzing the hydrogenation of olefins with molecular hydrogen. (wikipedia.org)

The complex interactions of Cl, O and CO with the RuO2(110) model catalyst surface have been investigated within a mixed approach combining theoretical and several experimental methods. (uni-giessen.de)
Another key issue of the present thesis has been the high degree of mobility of Cl atoms in the complex Cl/O/CO coadsorbate system on the chlorinated RuO2 model catalyst, shown here to dynamically adjust itself in response to the presence of O and CO on the surface under the given experimental conditions. (uni-giessen.de)

The use of well-defined (N-heterocyclic carbene)-Ag(I) complexes for the A(3) reaction allows for the coupling of unactivated aldehydes at room temperature and very short reaction times. (figshare.com)

While High Temperature CO-Shift Catalysts segment is altered to a % CAGR between 2022 and 2028. (marketsandresearch.biz)
Chapter 2, to profile the top manufacturers of CO-Shift Reaction Catalysts, with price, sales, revenue and global market share of CO-Shift Reaction Catalysts from 2019 to 2022. (marketsandresearch.biz)

The current popular catalyst for this reaction is made from the precious metal ruthenium. (cosmosmagazine.com)

The review is summarized and systematized the published data on the multicomponent reactions of ethyl trifluoroacetoacetate, carbonyl compounds (aldehydes and ketones), and nucleophilic reagents. (researchgate.net)

The reaction in question is called the Morita-Baylis-Hillman (MBH) reaction, a powerful process used to form a carbon-carbon bond between an alkene and an electrophilic compound such as aldehyde. (europa.eu)
The catalyst shows general utility with a variety of electrophilic acceptors. (designer-drug.com)
ii, for the Michael reaction) low yields, the efficiency with a restricted class of electrophilic olefins, the need of ultrasound, and/or the demand of a large excess of nitro compound that, for valuable nitro derivatives, is a serious economic drawback. (designer-drug.com)
Since it is an electrophilic aromatic substitution reaction. (theburningofrome.com)

For some other reactions, clusters of the catalytically active metal atom are needed to activate chemical bonds and obtain the desired products. (nature.com)

In this direction, researchers from the National Chemical Laboratory (CSIR-NCL), Pune, and Centre for Nano and Soft Matter Sciences (CeNS), Bangalore, an autonomous institute of the Department of Science and Technology (DST) have synthesized a trimetallic PtMnCo catalyst that displayed superior catalytic activity and high CO tolerance when compared to commercially available catalyst. (dst.gov.in)

Versatile catalysts with new features and functions could revolutionise scientists' synthetic strategies, paving the way for high-value chemicals and a greener chemical industry. (europa.eu)
Phenol is a good nucleophile, meaning it likes to donate electrons, and therefore can form a chemical bond in reactions. (theburningofrome.com)
Catalysts speed up chemical reactions by offering an alternate way for chemicals to react with one another. (cosmosmagazine.com)
By using the new iron catalyst, researchers created a polymer of smaller chemical units connected with carbon-carbon double bonds. (cosmosmagazine.com)
Consequently, mines should be aware of the chemical composition of any catalysts they choose to employ and the resulting impact on NO 2 emissions. (cdc.gov)
The chemical activation occurs through a reaction between the benzoyl peroxide and the tertiary amine respectively within the base paste and the catalyst paste 12 . (bvsalud.org)
In the present study, Professor Sundström and his colleagues have developed and studied a special molecule that can serve as a model for the type of chemical reactions that can be employed in a solar fuel cell. (lu.se)
In order to use biomass, the chemical reactions involved are usually similar to those found in nature. (lu.se)

Therefore, understanding active site stability and evolution under different reaction conditions is key to the design of efficient and robust catalysts. (nature.com)
This surface selective chlorination accounts for the extraordinary stability of the catalyst during the HCl oxidation. (uni-giessen.de)
Especially the interplay of chlorine and oxygen atoms (accommodated on the surface) was found to be of decisive importance for an understanding of the stability and dynamic response of the RuO2 catalyst under the conditions of the Sumitomo process. (uni-giessen.de)
Electrocatalytic activity and stability of these catalysts for oxygen reduction were studied by cyclic voltammetry and linear sweep voltammetry at rotating disk electrode (RDE). (ac.rs)

Often, this type of regeneration uses an oxidation catalyst, such as platinum, vanadium or similar compound, to reduce the temperature necessary to begin regeneration. (cdc.gov)

At higher concentrations palladium black forms and the reaction stops. (rug.nl)

18 Concerning the role played by the catalyst, as expected a possible diffusion effect into the pores of the catalyst is excluded due to the fact that the KG-60 silica is a macroporous material (pore distribution: 60-100 nm). (designer-drug.com)

The combined results of these characterizations and preliminary comparison on the catalytic activity with those from commercial catalysts provided insights into the viability of tailoring the nanostructured catalysts in terms of size and composition for fuel cell catalysis. (syr.edu)
The effects of catalyst composition, solution pH and other reaction conditions will be discussed. (aiche.org)

WGS is a crucial step in hydrogen enrichment, and effective catalysts that have been identified are platinum or gold in conjunction with ceria or other partially reducible oxides. (confex.com)
Ni compounds drastically enhanced the post-UV treatment LDH release and secretion across the whole cytokine spectrum, while Co oxides prompted much weaker reaction. (cdc.gov)

it should be noted that the very mild reaction conditions prevent typical side reactions such as the retro-aldol reaction 5,6 or the dehydration of the 2-nitro alcohol into nitroalkene. (designer-drug.com)

Furthermore, the scope of the reaction was extended to prepare 3,5-dinitrobenzoyl derivatives of alcohols. (stackexchange.com)
Chapter 1, to describe CO-Shift Reaction Catalysts product scope, market overview, market opportunities, market driving force and market risks. (marketsandresearch.biz)

Alternatively, if you preferred to do the reaction under solvent-free conditions you may follow the procedure given in Ref.3 using same starting materials. (stackexchange.com)
It also includes the procedure to make the catalyst and references to several other interesting articles (interesting in the meaning of Henry reaction catalysts). (designer-drug.com)

In addition, their NO x catalytic performance, along with relevant main factors (reaction temperature, molar ratio, particle size, space velocity, and O 2 content), was investigated in a simulated fixed bed reactor. (aaqr.org)
Conversion of 99 % was successfully obtained at a lower temperature (90 °C) and in a very short time of 25 min with the present material being used as the catalyst. (magritek.com)

The products investigated include methanol, formic acid, formaldehyde, and CO. Efforts to use machine learning approaches to designing superior catalysts and control process conditions will also be presented. (aiche.org)
Methyl mercaptan is produced by the reaction of hydrogen sulfide with methanol. (cdc.gov)

Experimental and theoretical studies have been conducted in order to develop a deeper understanding of how the chlorine uptake of the RuO2 catalyst takes place under conditions which are also present in the Sumitomo process. (uni-giessen.de)
We present experimental and theoretical methods for assessing the active sites of MMO catalysts and the origin of the scaling relationship between the CER and the OER. (jecst.org)

Organisms3

Chemicals and Drugs171

Analytical, Diagnostic and Therapeutic Techniques and Equipment22

Phenomena and Processes46

Disciplines and Occupations5

Technology, Industry, Agriculture14

Information Science2

Health Care8

Selectivity10

Reactivity5

Oxidative4

Abstract1

Enzymes3

Solid Catalysts1

Bimetallic catalysts2

Synthesis and characterization1

Redox2

Oxide6

Efficient catalyst3

Electrocatalysts4

Small-molecule3

Hydrogen evolution reaction2

Fischer-Tropsch2

Reduction reaction3

Reactive5

Heterogeneous catalyst2

Catalytic activities2

Electrochemical2

Homogeneous2

Chemistry2

Alloy6

MnCo1

Esters1

Easy workup2

Kinetics3

Molecules1

Exhibit2

Mechanism3

Pathways2

Asymmetric4

Organic3

Widely4

Metals4

Adsorption2

Ligand4

Model catalyst2

Complexes1

20222

Ruthenium1

Reagents1

Electrophilic4

Catalytically1

Superior catalytic1

Chemical8

Stability4

Vanadium1

Palladium1

Pores1

Composition2

Oxides2

Dehydration1

Scope2

Procedure2

Temperature2

Methanol2

Theoretical2