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Deactivation Mechanism of NOX Storage-Reduction Catalyst and Improvement of Its Performance
Technical Paper
2000-01-1196
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
A lean burn engine is effective in reducing fuel consumption. NOX storage-reduction catalysts (NSR catalyst) have been developed for these engines. In order to improve the performance of NSR catalysts, suppression of sulfur poisoning, which is one of the main causes of NSR catalyst deactivation, must be improved. In this paper, the sulfur desorption phenomenon has been analyzed from a novel point of view. Based on these results, an NSR catalyst with improved sulfur resistance has been developed by incorporation of highly dispersed titania, and use of a heat resistant zirconia with enhanced basicity.
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Authors
Citation
Hachisuka, I., Hirata, H., Ikeda, Y., and Matsumoto, S., "Deactivation Mechanism of NOX Storage-Reduction Catalyst and Improvement of Its Performance," SAE Technical Paper 2000-01-1196, 2000, https://doi.org/10.4271/2000-01-1196.Also In
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Number: SP-1533; Published: 2000-03-06
Number: SP-1533; Published: 2000-03-06
References
- Miyoshi Naoto et al. “Development of New Concept Three-Way Catalyst for Automotive Lean-Burn Engines SAE Paper 950809 1995
- Kato et al. “Development of NO X Storage-Reduction Catalyst System for Automotive Lean-Burn Engines” TOYOTA Technical Review 44 2 27 1994
- Suzuki et al. “Analysis and Improvement of Poisoning Suppression Mechanism of NO X Storage-Reduction Three-Way Catalyst” TOYOTA Technical Review 46 2 68 1996
- Ikeda Yasuo et al. “Development of NO X storage reduction catalyst for direct injection gasoline engines SAE Paper 991279 1999