SELECTIVE CARBON MONOXIDE OXIDATION IN H-2-RICH GAS STREAM OVER Co3O4/CeO2/ZrO2, Ag/CeO2/ZrO2, AND MnO2/CeO2/ZrO2 CATALYSTS

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DEREKAYA F., Akinbingol H. B.

CHEMICAL ENGINEERING COMMUNICATIONS, vol.201, no.6, pp.737-750, 2014 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 201 Issue: 6
• Publication Date: 2014
• Doi Number: 10.1080/00986445.2013.788499
• Journal Name: CHEMICAL ENGINEERING COMMUNICATIONS
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.737-750
• Gazi University Affiliated: Yes

Abstract

Activity and selectivity of selective CO oxidation in an H-2-rich gas stream over Co3O4/CeO2/ZrO2, Ag/CeO2/ZrO2, and MnO2/CeO2/ZrO2 catalysts were studied. Effects of the metaloxide types and metaloxide molar ratios were investigated. XRD, SEM, and N-2 physisorption techniques were used to characterize the catalysts. All catalysts showed mesoporous structure. The best activity was obtained from 80/10/10 Co3O4/CeO2/ZrO2 catalyst, which resulted in 90% CO conversion at 200 degrees C and selectivity greater than 80% at 125 degrees C. Activity of the Co3O4/CeO2/ZrO2 catalyst increased with increase in Co3O4 molar ratio.