Croatica Chemica Acta, Vol. 80 No. 1, 2007.
Preliminary communication
Influence of Water Vapour on Low-temperature CO Oxidation over Au/Fe2O3 Catalyst
Goran Šmit
Károly Lázár
Menno W. J. Crajé
Abstract
Influence of water vapour on the activity of Au/Fe2O3 catalyst was tested in the reaction of
low-temperature CO oxidation. Addition of water vapour had a positive influence in the
temperature range from 303 K to 383 K. In situ DRIFTS (diffuse reflectance infrared Fourier
transform spectroscopy) and FT-IR measurements in a vacuum showed the importance of water
and –OH groups, as water-derived species, for the efficiency of the catalyst in low-temperature
oxidation of CO.
Keywords
CO oxidation; supported gold catalyst; haematite (a-Fe2O3); water vapour; –OH groups; 57Fe and 197Au Mössbauer; DRIFTS, FT-IR
Hrčak ID:
12836
URI
Publication date:
11.3.2007.
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