Redox properties and metal-support interaction of Pd/Ce0.67Zr0.33O2-Al2O3 catalyst for CO, HC and NOx elimination
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- 作者：Siyu Lin ; Linyan Yang ; Xue Yang ; Renxian Zhou ; zhourenxian@zju.edu.cn" class="auth_mail
- 关键词：Pd-based TWC ; Chemical state ; Redox behavior ; Metal&ndash ; support interaction
- 刊名：Applied Surface Science
- 出版年：30 June 2014
- 年：2014
- 卷：305
- 期：Complete
- 页码：642-649
- 全文大小：2889 K
文摘
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PdOx species maintain oxidized state and good thermal stability on Pd–Ce interface.
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PdOx species migrate from Al2O3-rich grains to ceria-based oxide surface after aging treatment.
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Pd/Ce0.67Zr0.33O2–Al2O3 catalyst shows good thermal stability.
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Surface reaction of CO, HC and NOx on the catalysts has been studied in detail by in-situ drifts.