Issue 4, 2011

A review of NOx storage/reduction catalysts: mechanism, materials and degradation studies

Abstract

The catalytic removal of nitrogen oxides (NOx) from lean-burn exhaust emissions is one of the major challenges in environmental catalysis. Among the NOx emission control technologies, NOx storage/reduction (NSR) is currently regarded as one of the most practical technologies for lean-burn gasoline and diesel vehicles. This review gives a comprehensive overview of NSR technology, including the NSR reaction mechanisms, degradation mechanisms and NSR catalyst developments. The NSR reaction and degradation mechanisms will be addressed based on a typical NSR catalyst such as Pt/BaO/Al2O3, along with the concurrent new NSR catalyst developments for enhancing the NSR performance and alleviating their sulfur poisoning and thermal degradation.

Graphical abstract: A review of NOx storage/reduction catalysts: mechanism, materials and degradation studies

Article information

Article type
Minireview
Submitted
06 Jan 2011
Accepted
17 Mar 2011
First published
07 Apr 2011

Catal. Sci. Technol., 2011,1, 552-568

A review of NOx storage/reduction catalysts: mechanism, materials and degradation studies

G. Liu and P. Gao, Catal. Sci. Technol., 2011, 1, 552 DOI: 10.1039/C1CY00007A

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