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Highly efficient mesoporous Pd/CeO2 catalyst for low temperature CO oxidation especially under moisture condition

Paper ID Volume ID Publish Year Pages File Format Full-Text
45888 46426 2014 7 PDF Available
Title
Highly efficient mesoporous Pd/CeO2 catalyst for low temperature CO oxidation especially under moisture condition
Abstract

•The mesostructured Pd/CeO2 catalyst owned relatively high specific surface area, highly and uniformly dispersed Pd nanoparticles.•It showed much higher catalytic activity and stability for CO oxidation especially under moisture condition.•The unique catalytic durability was assigned to the synergetic effect between Pd nanoparticles and CeO2 support.

The Pd/CeO2 catalyst was successfully prepared by an improved impregnation protocol. The resulting materials possessed relatively high specific surface area and highly dispersed Pd nanoparticles. For low temperature CO oxidation reaction, 2.5 wt% Pd loaded catalyst showed the much higher reaction activity. The total conversion temperature was as low as 40 °C under dry condition, much lower than that synthesized by other method. More importantly, the material also showed excellent catalytic activity and stability under moisture condition. When 2.5 vol% H2O was introduced into the feed gas, the catalytic activity showed significantly enhancement, the CO total conversion temperature decreased from 40 °C to 30 °C. The catalytic mechanism and reaction kinetic study were also discussed in detail.

Graphical abstractThe mesostructured Pd/CeO2 catalyst owned relatively high specific surface area, highly and uniformly dispersed Pd nanoparticles. It showed much higher catalytic activity and stability for CO oxidation especially under moisture condition.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Mesoporous catalyst; Heterogeneous catalysis; CO oxidation; Cerium oxide
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Highly efficient mesoporous Pd/CeO2 catalyst for low temperature CO oxidation especially under moisture condition
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 158–159, October 2014, Pages 341–347
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