Catalytic reduction of NO and N2O to N2 in the presence of O2, C3H6, SO2, and H2O

被引：19

作者：

Christoforou, SC ^{[1
]}

Efthimiadis, EA ^{[1
]}

Vasalos, IA ^{[1
]}

机构：

[1] Univ City, Chem Proc Engn Res Inst, Ctr Res & Technol Hellas, Thessaloniki 54006, Greece

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2002年 / 41卷 / 09期

关键词：

D O I：

10.1021/ie010862o

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The reduction of NO and N2O to N-2 under the same reaction conditions was studied. When both NO and N2O coexisted in the feed, the two gases were reduced at different temperatures over Rh/- or Ru/Al2O3. NO was reduced over In/Al2O3 and N2O over Ru/- or Rh/Al2O3 at the same temperature range. Bimetallic catalysts consisting of both In and Ru sites were not efficient for the simultaneous NO and N2O reduction because C3H6 was oxidized over the Ru sites. A two-layered catalytic bed made of In/Al2O3 located close to the feed inlet and Ru/Al2O3 located close to the reactor exit was used to efficiently reduce (more than 80% conversion) both NO and N2O at 450 degreesC. The performance of the same catalytic system was tested by adding both H2O and SO2 in the feed. These gases caused a moderate inhibition in the activity, thus shifting the conversion vs temperature curves to higher temperatures and lowering the conversion to N-2.

引用

页码：2090 / 2095

页数：6

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