Pt/Mg-Ce-O catalyst for NO/H2/O2 lean de-Nox reaction

被引：42

作者：

Costa, C. N. ^{[1
]}

Efstathiou, A. M. ^{[1
]}

机构：

[1] Univ Cyprus, Dept Chem, CY-1678 Nicosia, Cyprus

来源：

ENVIRONMENTAL CHEMISTRY LETTERS | 2004年 / 2卷 / 02期

关键词：

lean de-NOx; NO reduction; supported platinum; mixed metal oxides;

D O I：

10.1007/s10311-004-0071-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The NO/H-2/O-2 reaction was studied under oxidizing, conditions in the 100-400 degrees C range over 0.1 wt% Pt supported on various metal oxides such as MgO, CeO2, SiO2, La2O3, CaO, Y2O3 and TiO2. The Pt/MgO and Pt/CeO2 catalysts showed good catalytic behaviours. Here, we find that the Pt/Mg-Ce-O catalyst, prepared from MgO and CeO2 by the sol-gel method, is a very active and selective catalyst towards N-2 formation in the whole 100-400 degrees C range. This catalyst appears to be the most active, selective and stable one ever reported in the literature for the NO/H-2/O-2 reaction, even in the presence of 5%v H2O or 20 ppmv of SO2 in the feed stream.

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页码：55 / 58

页数：4

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