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Open AccessArticle

The Influence of Base Metal (M) Oxidation State in Au-M-O/TiO2 Systems on Their Catalytic Activity in Carbon Monoxide Oxidation

Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, Cracow 30-239, Poland
Author to whom correspondence should be addressed.
Catalysts 2012, 2(1), 38-55;
Received: 6 October 2011 / Revised: 5 November 2011 / Accepted: 7 December 2011 / Published: 22 December 2011
(This article belongs to the Special Issue Gold Catalysts)
PDF [1072 KB, uploaded 22 December 2011]


Base metal promoted gold/titania catalysts were synthesized, characterized and tested in CO oxidation reaction. Catalysts containing dopant metals in higher oxidation states exhibited higher activity than catalysts containing dopants in reduced states. The activity of fresh catalysts promoted by Cu, Fe and Ni was similar to the unpromoted one, but treatment in reducing and oxidizing atmospheres revealed the supremacy of the copper promoted catalyst. The sequential deposition method proved to be better than the co-deposition—precipitation method. An attempt to explain these differences using XPS, FTIR and H2 TPR was performed. View Full-Text
Keywords: gold; CO oxidation; TiO2; modifications gold; CO oxidation; TiO2; modifications

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Mizera, J.; Spiridis, N.; Socha, R.P.; Zimowska, M.; Grabowski, R.; Samson, K.; Korecki, J. The Influence of Base Metal (M) Oxidation State in Au-M-O/TiO2 Systems on Their Catalytic Activity in Carbon Monoxide Oxidation. Catalysts 2012, 2, 38-55.

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