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Highly dispersed Ptδ+ on TixCe(1−x)O2 as an active phase in preferential oxidation of CO

Paper ID Volume ID Publish Year Pages File Format Full-Text
45232 46407 2016 10 PDF Available
Title
Highly dispersed Ptδ+ on TixCe(1−x)O2 as an active phase in preferential oxidation of CO
Abstract

•Pt/CeO2–TiO2 is a better catalyst for PROX than Pt supported on pure oxides.•The support is directly related with the catalyst performance.•The absence of CeO2 hampers the O2 activation.•The absence of TiO2 limits the activation of CO.

Structure–activity relationships for 1 wt.% Pt catalysts were investigated for a series of TixCe(1−x)O2 (x = 1, 0.98, 0.9, 0.5, 0.2 and 0) supports prepared by the sol–gel method. The catalysts prepared by impregnation were characterized in detail by applying a wide range of techniques as N2-isotherms, XRF, XRD, Raman, XPS, H2-TPR, Drifts, UV–vis, etc. and tested in the preferential oxidation of CO in the presence of H2. Also several reaction conditions were deeply analyzed. A strong correlation between catalyst performance and the electronic properties let us to propose, based in all the experimental results, a plausible reaction mechanism where several redox cycles are involved.

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Keywords
PROX; Ceria; Titania; Platinum; Hydrogen purification
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Highly dispersed Ptδ+ on TixCe(1−x)O2 as an active phase in preferential oxidation of CO
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 180, January 2016, Pages 169–178
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
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us