Journal
APPLIED CATALYSIS A-GENERAL
Volume 298, Issue -, Pages 57-64Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2005.09.020
Keywords
gold catalysis; supported gold; alumina; washing procedures; ammonia
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This publication deals with the influence upon catalytic gold particle size distribution of the washing procedures preceding calcination. The proposed preparation method and washing procedures lead to perfectly reproducible gold catalysts with a gold particle size of less than 2 nm. An explanation for the mechanism of gold particle growth is proposed. A controlled use of ammonia as a washing agent strongly improves the dispersion of gold metal on alumina. The possibility of gold complexes being stabilised by the presence of ammonia is also discussed. (c) 2005 Elsevier B.V. All rights reserved.
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