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Temporal analysis of products (TAP) study on low temperature carbon monoxide oxidation on supported Au catalysts
Authors:Maria Olea  Mizuki Tada  Yasuhiro Iwasawa
Affiliation:(1) Laboratorium voor Petrochemische Techniek, Department of Chemical Engineering, Ghent University, Krijgslaan 281-S5, B-9000 Ghent, Belgium;(2) Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Abstract:TAP (temporal analysis of products) technique was used to clarify the controversial mechanism for low-temperature CO oxidation on supported Au catalysts involving unidentified moisture effects on the performances. The unique TAP transient technique, along the use of a specially prepared, highly active Au/Ti(OH) 4 * catalyst, provided the information and characterization of each elementary step involving weak and reversible CO adsorption, strong and molecular O2 adsorption, and their surface reaction, which are suppressed by the coexistence of water vapor.
Keywords:supported gold catalysts  carbon monoxide oxidation  reaction mechanism  TAP
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