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The non-innocent role of cerium oxide in heterogeneous catalysis: A theoretical perspective

Paper ID Volume ID Publish Year Pages File Format Full-Text
53419 46969 2015 13 PDF Available
Title
The non-innocent role of cerium oxide in heterogeneous catalysis: A theoretical perspective
Abstract

•Ceria-based experimental and theoretical model catalyst studies are reviewed.•CeO2(1 1 1) alone, VOx/CeO2(1 1 1), and Ni/CeO2(1 1 1) are considered.•The role of ceria in the catalytic activity is discussed.•The support effect is discussed.

Ceria (CeO2) is the most significant of the oxides of rare-earth elements in industrial catalysis with its reducibility being essential to its functionality in catalytic applications. The complexity of real (powder) catalysts hinders the fundamental understanding of how they work. Specifically, the role of ceria in the catalytic activity of ceria-based systems is still not fully understood. To elucidate it, well-defined ceria-based model catalysts are prepared experimentally or created theoretically and studied. The purpose of this brief review is to discuss recent results on model ceria-based catalysts using CeO2(1 1 1), VOx/CeO2(1 1 1), and Ni/CeO2(1 1 1) as examples of catalysts for partial alkyne hydrogenation, oxidative dehydrogenation, and hydrogen production, respectively. The emphasis is here put on theoretical studies and special attention is given to the effects of ceria as catalyst support.

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Keywords
Vanadia-ceria; Nickel-ceria; Support-effect; Model catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 253, 15 September 2015, Pages 20–32
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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Online Support
Any Questions? feel free to contact us