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CO Transformation on Gold Catalysts – a Comparison with the Reaction on Pt/NbMCM-41

Klimas W., Sobczak I., Marie O., Bazin P., Daturi M., Ziolek M.

Polish Journal of Chemistry

2008

Vol. 82, nr 9

1695-1695

Silicate and niobosilicate MCM-41 were used as su ports for gold introduced by post synthesis impregnation or by co-precipitation during the synthesis. The latter sample (AuMCM-41) exhibited unique properties for the WGS reaction, as revealed by in situ FTIR and FTIR/MS OPERANDO techniques. AuMCM-41 is activated by CO through the formation of oxygen vacancies in volved in oxygen adsorption and activation for the further reaction. This behaviour is not characteristic for Pt/MCM-41 catalysts and appears only after the introduction of niobium into the mesoporous matrix (Pt/NbMCM-41).