Title of article
Affinity order among noble metals and CeO2 Original Research Article
Author/Authors
Saburo Hosokawa، نويسنده , , Makoto Taniguchi، نويسنده , , Kazunori Utani، نويسنده , , Hiroyoshi Kanai، نويسنده , , Seiichiro Imamura، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
6
From page
115
To page
120
Abstract
The affinity order among four kinds of major noble metals (Ru, Rh, Pd, and Pt) and CeO2 was investigated by XRD and XAFS techniques. The states of noble metals supported on CeO2 and the sintering behavior of CeO2 on calcination differed depending upon the kinds of noble metals. Rh and Pd retained their Rhsingle bondOsingle bondCe and Pdsingle bondOsingle bondCe bonds even after calcination at 800 °C, and Pt kept its Ptsingle bondOsingle bondCe bond at 500 °C, while Ru on CeO2 formed bulk RuO2 on calcination at temperatures as low as 500 °C. Rh effectively prevented sintering of CeO2. The order of the affinity of the noble metals toward CeO2 was assumed to be Rh > Pd > Pt > Ru.
Keywords
XRD , Noble metal–ceria interaction , Rh/CeO2 , Pt/CeO2 , Pd/CeO2 , XAFS , Ru/CeO2
Journal title
Applied Catalysis A:General
Serial Year
2005
Journal title
Applied Catalysis A:General
Record number
1152176
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