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Synergistic effect of Pt or Pd and perovskite oxide for water gas shift reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
43172 45957 2009 9 PDF Available
Title
Synergistic effect of Pt or Pd and perovskite oxide for water gas shift reaction
Abstract

The water gas shift (WGS) reaction over Pt and Pd catalysts supported on various perovskite oxides has been investigated at 573 K without catalyst pretreatment. The Pt and Pd catalysts on LaCoO3 support showed high catalytic activity. Interaction between Pt or Pd and the support is considered to promote the WGS reaction: Pt/LaCoO3 had high initial activity but deactivated immediately; Pd/LaCoO3 was less active than Pt/LaCoO3, but had superior stability. Catalysts were characterized using XRD, STEM, XPS, and H2-temperature programmed reduction (TPR). Results of this study showed that reduction of the support decreased the CO conversion on Pt/LaCoO3. On the other hand, Pd/LaCoO3 showed stable activity for the WGS reaction. Therefore, Pd was added to Pt/LaCoO3 for stabilizing the catalyst activity, and 0.5 wt.% Pd/1 wt.% Pt/LaCoO3 catalyst showed higher activity and stability.

Graphical abstractNovel catalysts supported on various perovskites were examined for the water gas shift reaction at 573 K without catalyst pretreatment. The Pt and Pd catalysts supported on LaCoO3 support showed high catalytic activity without reduction due to their synergetic interaction.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Water gas shift; Pt catalyst; Pd catalyst; Perovskite oxide; Synergistic effect; Lattice oxygen
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Synergistic effect of Pt or Pd and perovskite oxide for water gas shift reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 352, Issues 1–2, 15 January 2009, Pages 214–222
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