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CO preferential oxidation under H2-rich streams on copper oxide supported on Fe promoted CeO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
39067 45802 2015 10 PDF Available
Title
CO preferential oxidation under H2-rich streams on copper oxide supported on Fe promoted CeO2
Abstract

•Fe addition to copper/ceria catalyst for CO-PROX has been studied.•Fe-promoted sample outperforms, mainly in terms of selectivity.•HRTEM and XPS revealed enhanced copper dispersion on Fe-promoted catalyst.•TPRs suggest H2 activation delayed at higher temperature on Fe-promoted sample.

In this work the effect of Fe addition to copper/ceria catalysts on the catalytic activity toward CO-PROX reaction has been studied and related to the modification of textural and redox properties induced by iron. Catalysts have been characterized by the use of BET surface area measure, X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and TPR with different reducing mixtures (CO/N2 and/or H2/N2). Results show that iron promotes a superficial enrichment of highly dispersed copper sites improving catalyst reducibility, especially under CO-containing mixture, thus resulting in an enhanced selectivity of CO-PROX reaction.

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Keywords
Copper/ceria; Iron; CO-PROX; Hydrogen
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CO preferential oxidation under H2-rich streams on copper oxide supported on Fe promoted CeO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 506, 5 October 2015, Pages 268–277
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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