NOx release from a noble metal/BaO catalyst:: dependence on gas composition

被引：87

作者：

Amberntsson, A ^{[1
]}

Persson, H

Engström, P

Kasemo, B

机构：

[1] Chalmers Univ Technol, Competence Ctr Catalysis, SE-41296 Gothenburg, Sweden

[2] Chalmers Univ Technol, Dept Appl Phys, SE-41296 Gothenburg, Sweden

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2001年 / 31卷 / 01期

关键词：

NOx; storage; lean-burn; NOx reduction; barium oxide; NOx release;

D O I：

10.1016/S0926-3373(00)00266-6

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：

Automotive lean-NOx has become one of the major issues in catalysis research, due to increased environmental concerns. In the present study the NOx storage/release concept has been investigated with respect to the NOx release kinetics. The importance of the gas composition during NOx release, including the lambda -value, humidity, O-2, and CO2 concentration, was studied in flow reactor experiments performed with a commercial, noble metal BaO type catalyst. The main conclusions are that CO2 has a promoting and O-2 a blocking effect on the NO, release. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：27 / 38

页数：12

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