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Probing the factors affecting structure and activity of the Au/CeO2 system in total and preferential oxidation of CO

Paper ID Volume ID Publish Year Pages File Format Full-Text
49149 46557 2006 11 PDF Available
Title
Probing the factors affecting structure and activity of the Au/CeO2 system in total and preferential oxidation of CO
Abstract

The effects of the preparation method (deposition–precipitation, co-precipitation, incipient-wetness, combustion) and loading (1–5 wt.%) on the structure and redox features of the Au/CeO2 system have been probed by XRD, TEM and TPR techniques. The catalytic pattern in total (TOX) and preferential (PROX) CO oxidation has been assessed by temperature programmed reaction tests in the range 273–473 K. Controlling surface area and residual chlorine, the synthesis route determines the strength of the Au–CeO2 interaction which, reflecting in a hard reduction of the active phase, hinders the CO oxidation functionality. Chlorine removal by washing treatment in diluted alkaline solutions enables an easy reduction of the active phase, levelling off the TOX and PROX performance of the various systems.

Keywords
Au/CeO2 catalyst; Preparation method; Reduction pattern; Surface area; Chlorine; Dispersion; Total and preferential CO oxidation
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Probing the factors affecting structure and activity of the Au/CeO2 system in total and preferential oxidation of CO
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 66, Issues 1–2, 20 June 2006, Pages 81–91
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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