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CO–PROX reactions on copper cerium oxide catalysts prepared by melt infiltration

Paper ID Volume ID Publish Year Pages File Format Full-Text
46162 46430 2012 9 PDF Available
Title
CO–PROX reactions on copper cerium oxide catalysts prepared by melt infiltration
Abstract

A series of copper cerium oxide catalysts was prepared by melt infiltration routes using silica hollow spheres (SHS) as the support material. Their catalytic activity in CO oxidation and preferential oxidation of CO in H2 stream (PROX) strongly depend on the Cu/Ce ratio. Lower ratios resulted in higher activity, indicating that finely dispersed CuO clusters that strongly interact with ceria are the active sites. The highest activity is found for an atomic Cu/Ce ratio of 1/8. The catalysts prepared by melt infiltration are more active than their counterparts prepared by conventional solution impregnation methods. The difference is attributed to the higher proportion of finely dispersed CuO clusters strongly interacting with ceria in the melt infiltrated catalysts.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights▸ Supported CuO–CeO2 catalysts were synthesized by melt infiltration methods. ▸ CO/PROX activity of CuO–CeO2 catalysts significantly depends on the Cu/Ce mole ratio. ▸ Finely dispersed CuO cluster on CeO2 shows the highest activity in CO/PROX oxidation. ▸ The catalysts exhibit superior performance to catalyst prepared by solution impregnation.

Keywords
Copper; Ceria; Melt infiltration; CO oxidation; CO–PROX
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CO–PROX reactions on copper cerium oxide catalysts prepared by melt infiltration
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 123–124, 23 July 2012, Pages 424–432
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us