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Promoting effect of ZrO2 carrier on activity and thermal stability of CeO2-based oxides catalysts for toluene combustion

Paper ID Volume ID Publish Year Pages File Format Full-Text
40111 45844 2013 8 PDF Available
Title
Promoting effect of ZrO2 carrier on activity and thermal stability of CeO2-based oxides catalysts for toluene combustion
Abstract

•CMC/ZrO2 exhibits high activity and thermal stability for toluene combustion.•A new phase of Zr0.88Ce0.12O2 was detected during thermal treatment.•Zr0.88Ce0.12O2 serves as the actual carrier of CeO2-based oxides catalyst.•Zr0.88Ce0.12O2 can enhance the mobility of active oxygen.

ZrO2 was used as a support for the preparation of Cu–Mn–Ce mixed oxides catalysts (CMC) by impregnation method and calcination at different temperatures. A model reaction, toluene combustion was conducted to evaluate the performance of CMC/ZrO2 catalysts. High thermal stability and activity was obtained on these catalysts. The effects of CMC loading and calcination temperature on the structure and redox properties of catalysts were also investigated by XRD, H2-TPR, TEM and XPS. Results show that calcination leads to the interaction of ZrO2 and CMC via the formation of a new phase of Zr0.88Ce0.12O2 in the interface, which is more likely to be formed in the catalysts with low CMC loading levels. Zr0.88Ce0.12O2 seems to function as the actual carrier of active phase of CMC, which cannot only stabilize the surface active structure of CMC but also enhance the mobility of active oxygen and improve the catalytic performance of total oxidation as well.

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Keywords
CeO2-based oxides; Carrier effect; Thermal stability; Catalytic combustion; Toluene
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Promoting effect of ZrO2 carrier on activity and thermal stability of CeO2-based oxides catalysts for toluene combustion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 464–465, 15 August 2013, Pages 101–108
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