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Influence of the calcination temperature on the Au/FeO x /Al 2 O 3 catalyst
Author(s) -
Wang Donghui,
Hao Zhengping,
Cheng Daiyun,
Shi Xicheng
Publication year - 2006
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1533
Subject(s) - calcination , catalysis , x ray photoelectron spectroscopy , materials science , phase (matter) , work (physics) , atmospheric temperature range , ion , inorganic chemistry , chemical engineering , chemistry , physics , organic chemistry , thermodynamics , engineering
Abstract The effect of calcination temperature on the electronic structure of gold catalyst was investigated in this paper. CO oxidation was employed as a test reaction to correlate the phase changes to the catalytic activity. The TPR, XPS and XRD characterization showed that the highly active Au/FeO x /Al 2 O 3 catalyst contained both gold atoms and ions. The catalytic performance of gold catalyst may depend on the Au 0 /Au 3+ ratio. The best activity in the present work was obtained when the Au 0 /Au 3+ ratio was about 0.89. Copyright © 2006 Society of Chemical Industry