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

Authors

FATMA SOYAL BALTACIOĞLU
BERRİN GÜLYÜZ
AHMET ERHAN AKSOYLU
ZEYNEP İLSEN ÖNSAN

DOI

-

Abstract

The kinetics of low temperature CO oxidation were studied over sequentially impregnated 1wt%Pt-0.25wt%SnO_x supported on HNO_3-oxidized activated carbon (AC3) using a wide range of CO (1-10 mol%) and O_2 (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% H_2 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 H_2 on CO oxidation rates was also investigated under similar conditions.

Keywords

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

First Page

455

Last Page

464

Recommended Citation

BALTACIOĞLU, FATMA SOYAL; GÜLYÜZ, BERRİN; AKSOYLU, AHMET ERHAN; and ÖNSAN, ZEYNEP İLSEN (2007) "Low Temperature CO Oxidation Kinetics over Activated Carbon Supported Pt-SnO_x Catalysts," Turkish Journal of Chemistry: Vol. 31: No. 5, Article 4. Available at: https://journals.tubitak.gov.tr/chem/vol31/iss5/4