Application of chemical trapping to the determination of surface species and to the study of their evolution under reaction conditions in heterogeneous catalysis

The detection of surface species by chemical trapping is described and discussed. The results obtained by scavenging intermediates in CO-H 2 and CO 2-H 2 reactions show the relevance of this method to the study of reaction mechanisms in heterogeneous catalysis. Quantitative detection of some species...

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Bibliographic Details
Published inJournal of molecular catalysis Vol. 31; no. 2; pp. 225 - 250
Main Authors Deluzarche, Antonin, Hindermann, Jean-Paul, Kiennemann, Alain, Kieffer, Roger
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.01.1985
Elsevier Sequoia
Subjects
Catalysis
Catalysts: preparations and properties
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
General. Nomenclature, chemical documentation, computer chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Carbon Oxides
Palladium
Hydrogenation
Magnesium Oxides
Silica
Supported catalyst
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Summary:The detection of surface species by chemical trapping is described and discussed. The results obtained by scavenging intermediates in CO-H 2 and CO 2-H 2 reactions show the relevance of this method to the study of reaction mechanisms in heterogeneous catalysis. Quantitative detection of some species (carboxylate, formyi, methoxy) is achieved and a correlation has been found between activity and surface species on a Pd/MgO-SiO 2 catalyst. A reaction scheme is proposed for the CO-H 2 and CO 2-H 2 reactions.
ISSN:0304-5102
DOI:10.1016/0304-5102(85)85066-5