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Improvement of NOx Storage-Reduction Catalyst
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 4, 2002 by SAE International in United States
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In order to further improve the performance of NOx storage-reduction catalysts (NSR catalysts), focus was placed on their high temperature performance deterioration via sulfur poisoning and heat deterioration. The reactions between the basicity or acidity of supports and the storage element, potassium, were analyzed. It was determined that the high temperature performance of NSR catalysts is enhanced by the interaction between potassium and zirconia, which is a basic metal oxide. Also, a new zirconia-titania complex metal oxides was developed to improve high temperature performance and to promote the desorption of sulfur from the supports after aging.
CitationHachisuka, I., Yoshida, T., Ueno, H., Takahashi, N. et al., "Improvement of NOx Storage-Reduction Catalyst," SAE Technical Paper 2002-01-0732, 2002, https://doi.org/10.4271/2002-01-0732.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
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- Kato et al.: “Development of NOx Storage-Reduction Catalyst System for Automotive Lean-Burn Engines”, TOYOTA Technical Review, Vol.44, No. 2, 27 (1994)
- Suzuki et al.: “Analysis and Improvement of Poisoning Suppression Mechanism of NOx Storage-Reduction Three-Way Catalyst”, TOYOTA Technical Review, Vol.46, No. 2, 68 (1996)
- Ikeda Yasuo et al.: “Development of NOx storage reduction catalyst for direct injection gasoline engines, SAE Paper 991279, (1999)
- Hachisuka Ichiro, et al. “Deactivation Mechanism of NOx Storage-Reduction Catalyst and Improvement of Its Performance”, SAE Paper 2001-01-1196, (2000)