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Improved activity and stability of Pd@CeO2 core–shell catalysts hybridized with multi-walled carbon nanotubes in the water gas shift reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
53433 46969 2015 7 PDF Available
Title
Improved activity and stability of Pd@CeO2 core–shell catalysts hybridized with multi-walled carbon nanotubes in the water gas shift reaction
Abstract

•Pd@CeO2 core–shells are integrated on multiwall carbon nanotubes (MWCNTs).•The activity towards water gas shift reaction is evaluated.•The performance is dependent upon the weight ratio MWCNTs:Pd@CeO2.•An optimum homogeneity is reached with a 1:4 weight ratio MWCNTs:Pd@CeO2.•The most homogeneous system is proven to be the most performant catalyst.

An efficient method is presented for preparing hierarchical catalysts composed of multi-walled carbon nanotubes (MWCNTs) and Pd@CeO2 core–shell nanoparticles. These materials were then examined for the water gas shift reaction (WGSR), which demonstrated intimate contact between the constituent parts. The integration of the carbonaceous support improves the stability of the nanoparticles by ordering the dispersion of the inorganic phase and increases the activity by suppressing the deactivation of the active phase that is commonly observed in conventional Pd–CeO2 under reducing conditions, e.g. WGSR conditions. An optimum MWCNTs:Pd@CeO2 ratio exists that affords totally homogeneous structures and provides the best catalytic properties.

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Keywords
Water gas shift; Carbon nanotubes; Cerium dioxide; Ceria; Nanohybrids; Palladium
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Improved activity and stability of Pd@CeO2 core–shell catalysts hybridized with multi-walled carbon nanotubes in the water gas shift reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 253, 15 September 2015, Pages 142–148
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