| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 43172 | Applied Catalysis A: General | 2009 | 9 Pages |
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
