Low Temperature CO Oxidation Kinetics over Activated Carbon Supported Pt-SnOx Catalysts

The kinetics of low temperature CO oxidation were studied over sequentially impregnated 1wt%Pt-0.25wt%SnOx supported on HNO3-oxidized activated carbon (AC3) using a wide range of CO (1-10 mol%) and O2 (1-4 mol%) concentrations. Intrinsic kinetic data were obtained in the initial rates region at 383 K in the absence and presence of 5-45 mol% H2 in the feed. A power-function rate expression with positive dependence on CO (0.96) and negative dependence on oxygen (--0.31) was obtained for the low temperature oxidation of CO. The effect of H2 on CO oxidation rates was also investigated under similar conditions.

Anahtar Kelimeler:

Carbon monoxide, oxidation, kinetics, Pt-Sn catalysts, activated carbon supports, PROX

Low Temperature CO Oxidation Kinetics over Activated Carbon Supported Pt-SnOx Catalysts

Keywords:

Carbon monoxide, oxidation, kinetics, Pt-Sn catalysts, activated carbon supports, PROX,

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