Nature of adsorbed species during the reduction of CrO₃/SiO₂with CO InsituFTIR spectroscopic study

Abstract

Insitu FTIR spectra of adsorbed CO on CrO₃/SiO₂ catalysts have been investigated at elevated temperatures to elucidate the nature of the species formed during the reduction process with CO. The results show the formation of three species: bicarbonates, monodentate carbonate and inorganic carboxylate. The reduction of CrO₃/SiO₂, which occurs through the formation of surface bicarbonate and carboxylate compounds, starts near 100°C.

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