Hydrogenation: Addition of hydrogen to a compound, especially to an unsaturated fat or fatty acid. (From Stedman, 26th ed)Iridium: A metallic element with the atomic symbol Ir, atomic number 77, and atomic weight 192.22.Catalysis: The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.Ruthenium: A hard, brittle, grayish-white rare earth metal with an atomic symbol Ru, atomic number 44, and atomic weight 101.07. It is used as a catalyst and hardener for PLATINUM and PALLADIUM.Rhodium: Rhodium. A hard and rare metal of the platinum group, atomic number 45, atomic weight 102.905, symbol Rh. (Dorland, 28th ed)Stereoisomerism: The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Alkenes: Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)Palladium: A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.Phosphines: Inorganic or organic compounds derived from phosphine (PH3) by the replacement of H atoms. (From Grant & Hackh's Chemical Dictionary, 5th ed)Alkadienes: Acyclic branched or unbranched hydrocarbons having two carbon-carbon double bonds.KetonesAlcohols: Alkyl compounds containing a hydroxyl group. They are classified according to relation of the carbon atom: primary alcohols, R-CH2OH; secondary alcohols, R2-CHOH; tertiary alcohols, R3-COH. (From Grant & Hackh's Chemical Dictionary, 5th ed)Alkynes: Hydrocarbons with at least one triple bond in the linear portion, of the general formula Cn-H2n-2.IminesMolecular Structure: The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.Chemistry, Organic: The study of the structure, preparation, properties, and reactions of carbon compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Allyl CompoundsAldehydes: Organic compounds containing a carbonyl group in the form -CHO.Hydrogen: The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight [1.00784; 1.00811]. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.Cyclization: Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
  • Such catalysts may be essential for the adoption of organic hydrogen-storage materials as an alternative to petroleum-derived fuels. (osti.gov)
  • The produced polymer is contacted with hydrogen in the presence of a catalyst. (google.ca)
  • Due to the immense structural diversity and large surface areas of MOFs, often exceeding the size of a professional football field per gram of material, many uses of MOFs have been discovered in purification, separation, capture, and storage of gases, especially hydrogen, carbon dioxide and methane, as well as applications as catalysts and sensors. (ameslab.gov)
  • The hydrogen solubility in ionic liquids is determined, and the effect on hydrogenation turnover frequencies in the catalytic reduction of benzene to cyclohexane in ionic liquids studied. (epfl.ch)
  • In terms of their rates of hydrogenation, the degree of substitution on the olefin substrate is the key factor, since the rate-limiting step in the mechanism is the insertion into the olefin which is limited by the severe steric hindrance around the metal center. (wikipedia.org)
  • Biphase olefin hydrogenation will be developed with ionic liquids that Covalent has invented. (epa.gov)
  • One of the most commonly studied examples is hydrogenation of α-ketoesters, such as ethyl pyruvate, on the surface of alumina-supported platinum catalysts that have been treated with a chiral alkaloid modifier--typically cinchonidine. (acs.org)
  • Nanoparticles (Pd, Pt, Rh) stabilized by G4OH PAMAM dendrimers and supported in SBA-15 (MNPs/SBA-15 with M = Pd, Pt, Rh) were efficiently used as catalysts in the acceptorless dehydrogenation of tetrahydroquinoline/indoline derivatives in toluene (release of H 2 ) at 130 °C. These catalysts are air stable, very active, robust, and recyclable during the process. (osti.gov)
  • Influence of Defects and H2O on the Hydrogenation of CO2 to Methanol over Pt Nanoparticles in UiO-67 Metal-Organic Framework. (uio.no)
  • Hydrogenation of CO2 to Methanol by Pt Nanoparticles Encapsulated in UiO-67: Deciphering the Role of the Metal−Organic Framework. (uio.no)
  • In this study, an exceptionally stable MOF catalyst consisting of Pt nanoparticles (NPs) embedded in a Zr-based UiO-67 MOF was subject to steady-state and transient kinetic studies involving H/D and 13C /12C exchange, coupled with operando infrared spectroscopy and density functional theory (DFT) modeling, targeting methanol formation from CO2/H2 feeds at 170 C and 1-8 bar pressure. (uio.no)
  • Nanoparticles can substitute conventional materials and serve as active and stable heterogeneous catalysts or support materials for catalytic groups. (tifr.res.in)
  • TEM images of the used catalyst clearly show the absence of palladium nanoparticles, proving the high stability of the palladium compound. (uni-kl.de)
  • The combination at the nanoscale of organic and inorganic components leads to highly homogeneous materials, which develop extended organic-inorganic interfaces with tuneable chemical organic-inorganic bonds from weak to strong interactions. (rsc.org)
  • Metal-organic frameworks (MOFs) show great prospect as catalysts and catalyst support materials. (uio.no)
  • In this article, we present the structural characteristics and catalytic properties of hybrid organic-inorganic materials in which the molecular catalysts are part of the inorganic structure, emphasizing the possibilities of periodic mesoporous hybrid materials and coordination polymers as single-site solid catalysts. (royalsocietypublishing.org)
  • A nitrogen-doped carbon was synthesized through the pyrolysis of the well-known metal-organic framework ZIF-8, followed by a subsequent acid treatment, and has been applied as a catalyst in the electrochemical reduction of carbon dioxide. (tudelft.nl)
  • The use of metal organic frameworks as hard templates for the preparation of heterogeneous catalysts is thoroughly reviewed. (tudelft.nl)
  • abstract = "A current endeavor in research is the replacement of expensive and rare platinum group metal homogeneous catalysts with those of earth abundant metals such as iron, cobalt, nickel and zinc. (researchwithrutgers.com)
  • In the comprehensive scientific approach, a collection of potential catalyst structures was initially established and the selected organometallic compounds were synthesized in lab scale quantities. (europa.eu)
  • Asif M, Gao X, Lv H, Xi X, Dong P (2018) Catalytic hydrogenation of CO2 from 600 MW supercritical coal power plant to produce methanol: a techno-economic analysis. (springer.com)
  • Stangeland K, Li H, Yu Z (2018) Thermodynamic analysis of chemical and phase equilibria in CO2 hydrogenation to methanol, dimethyl ether, and higher alcohols. (springer.com)
  • G, Chen, Jingguang 2018-09-01 00:00:00 The catalytic hydrogenation of CO2 with renewable H2 represents a promising pathway for reducing CO2 emissions. (deepdyve.com)
  • A nickel catalyst was then used to induce decarboxylative borylation in the presence of bis(pinacolato)diboron, a bipyridine ligand to produce a boronate ester, which was then hydrolyzed. (phys.org)
  • In other words, each partner may suffer molecular stresses which are absent in their conventional media such as unusual electronic states of the metal, metal-ligand exchanges upon binding of the catalyst to its receptor or even metal-mediated conformational changes. (royalsocietypublishing.org)
  • The ligand and the method of catalyst preparation play extremely important roles in determining catalyst performance. (matthey.com)
  • Tailored Cobalt-Catalysts for Reductive Alkylation of Anilines with Carboxylic Acids under Mild Conditions. (nih.gov)
  • We present a strategy to synthesize three types of renewable lubricant base oils with up to 90% yield using 2-alkylfurans, derived from nonfood biomass, and aldehydes, produced from natural oils or biomass through three chemistries: hydroxyalkylation/alkylation (HAA), HAA followed by hydrogenation, and HAA followed by hydrodeoxygenation. (sciencemag.org)
  • More particularly, this invention relates to a novel method for preferentially hydrogenating unsaturated double bonds in conjugated diene units of the polymer under mild hydrogenation conditions by the use of a polymer hydrogenation catalyst comprising at least one specific titanium compound. (google.com)
  • Zachopoulos A, Heracleous E (2017) Overcoming the equilibrium barriers of CO2 hydrogenation to methanol via water sorption: a thermodynamic analysis. (springer.com)
  • Dehydrogenative coupling and the subsequent amide hydrogenation proceed with good yields (90% and >95% respectively, with methanol and N,N′-dimethylethylenedi- amine as dehydrogenative coupling partners). (greencarcongress.com)