The effect of a changing lean gas composition on the ability of NO2 formation and NOx reduction over supported Pt catalysts

被引：0
作者：
Louise Olsson
Miroslawa Abul-Milh
Hanna Karlsson
Edward Jobson
Peter Thormählen
Andreas Hinz
机构：
[1] Chalmers University of Technology,Competence Centre for Catalysis
[2] Volvo Technology Corporation,undefined
[3] Dept. 06130,undefined
来源：
Topics in Catalysis | 2004年 / 30-31卷
关键词：
Pt/Al; O; Pt/TiO; Pt/V; O; /TiO; oxidation; NO; NO; NO; lean burn conditions; platinum oxides;
D O I：
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中图分类号：
学科分类号：
摘要：
Three model catalysts (Pt/Al2O3, Pt/TiO2, Pt/V2O5/TiO2) were examined in regard to their NO2 formation ability under a changing lean gas composition. The results show that the NO to NO2 oxidation function as well as the NOx reduction under lean gas conditions is affected by a change in the lean gas atmosphere. The NO oxidation activity also decreased with time, for Pt/Al2O3 and Pt/TiO2, and a possible explanation may be platinum oxide formation. This deactivation was not observed for Pt/V2O5/TiO2.
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页码：85 / 90
页数：5
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