Synergy of FexCe1-xO2 mixed oxides for N2O decomposition

被引：175
作者：
Perez-Alonso, FJ
Melián-Cabrera, I
Granados, ML
Kapteijn, F
Fierro, JLG
机构：
[1] Univ Groningen, Stratingh Inst Chem & Chem Engn, NL-9747 AG Groningen, Netherlands
[2] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain
[3] Delft Univ Technol, R&CE, DelfChemTech, NL-2628 BL Delft, Netherlands
来源：
JOURNAL OF CATALYSIS | 2006年 / 239卷 / 02期
关键词：
ceria; iron catalysts; co-precipitation; hematite; N2O decomposition;
D O I：
10.1016/j.jcat.2006.02.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Fe-Ce mixed oxides prepared by coprecipitation showed considerable synergy in N2O decomposition when compared with pure metal oxide counterparts. The mixed system also displayed higher stability in reaction at high temperature. Through characterisation by XRD, XPS and TPR, the activity-stability improvement is ascribed to the formation of Fe-doped ceria and Ce-doped hematite and also to increased surface area. The intimate interaction in the mixed phases results in easier reduction. Thus the release of oxygen, which is the rate-determining step in this N2O decomposition, becomes more facile. (c) 2006 Elsevier Inc. All rights reserved.
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页码：340 / 346
页数：7
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