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

Authors
Amberntsson, A Persson, H Engstrom, P Kasemo, B
Citation
A. Amberntsson et al., NOx release from a noble metal/BaO catalyst: dependence on gas composition, APP CATAL B, 31(1), 2001, pp. 27-38
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics","Environmental Engineering & Energy
Journal title
APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN journal
09263373 → ACNP
Volume
31
Issue
1
Year of publication
2001
Pages
27 - 38
Database
ISI
SICI code
0926-3373(20010413)31:1<27:NRFANM>2.0.ZU;2-X
Abstract
Automotive lean-NOx has become one of the major issues in catalysis researc h, due to increased environmental concerns. In the present study the NOx st orage/release concept has been investigated with respect to the NOx release kinetics. The importance of the gas composition during NOx release, includ ing 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 bloc king effect on the NO, release. (C) 2001 Elsevier Science B.V. All rights r eserved.