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Author Bradley, J. S.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ CARBON MONOXIDE ♦ HYDROGENATION ♦ CATALYSTS ♦ CATALYSIS ♦ FUNCTIONAL MODELS ♦ HYDROGEN ♦ METALS ♦ SOLID CLUSTERS ♦ STRUCTURAL MODELS ♦ CARBON COMPOUNDS ♦ CARBON OXIDES ♦ CHALCOGENIDES ♦ CHEMICAL REACTIONS ♦ ELEMENTS ♦ NONMETALS ♦ OXIDES ♦ OXYGEN COMPOUNDS 400201* -- Chemical & Physicochemical Properties ♦ Organic ChemistryChemical & Physicochemical Properties(-1987)
Abstract According to J. S. Bradley, head of a research group at Exxon Research and Engineering Co., metal structures made from carbidocarbonyl clusters treated with the mild oxidizing agent tropylium bromide may serve as models for both homogeneous and heterogeneous catalysis of carbon monoxide and hydrogen reactions, although the model metal clusters do not function as catalysts, since their regeneration requires the addition of an oxidizing agent. When an octahedral cluster containing six iron atoms, a central carbon, and 16 carbonyl groups is treated with the oxidizing agent, two adjacent iron atoms are removed from the cluster, and the central carbon atom becomes exposed and very reactive with carbon monoxide to form a species which quickly reacts with the methanol solvent to give a methyl ester fragment bound to the cluster. Reaction with hydrogen (at 120/sup 0/C and 220 psi) releases methyl acetate and restores the original unreactive octahedral cluster.
Educational Use Research
Learning Resource Type Article
Publisher Date 1980-04-28
Publisher Place United States
Journal Chem. Eng. News
Volume Number 58
Issue Number 17
Organization Exxon Res. Eng. Co.


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