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Development of High Performance Three-Way-Catalyst Technology to Lower NOx Emission
Technical Paper
2009-01-1398
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
One primary result of the reduction of platinum group metals (PGM) within a catalytic converter is the decline in NOx conversion efficiency. This paper hypothesizes that the primary factor of this decline to be hydrocarbon (HC) poisoning. To maintain high NOx conversion efficiency as the PGM reduces, Rh activation improvement becomes significant to overcome the HC poisoning. Analysis of the Rh deterioration mechanism found that it is effective to separately arrange Rh and CeO2 on the converter, avoiding the Rh deactivation. By this improvement, we improved the catalyst activity at less than 25% of the original Rh loading.
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Fujiwara, T., Takagi, N., Ichinose, H., Yoshioka, M. et al., "Development of High Performance Three-Way-Catalyst Technology to Lower NOx Emission," SAE Technical Paper 2009-01-1398, 2009, https://doi.org/10.4271/2009-01-1398.Also In
References
- Arnold Louise et al. Development and Application of New Low Rhodium Three-Way Catalyst Technology SAE 2007-01-0046
- Williamson W. B. et al. Palladium/Rhodium Dual-Catalyst LEV 2 and Bin 4 Close-Coupled Emission Solutions SAE 2007-01-1263
- Kidokoro Toru et al. Development of PZEV exhaust emission control system SAE 2003-01-0817
- Aoki Yuki et al. Development of High Performance Three-Way-Catalyst (2) JSAE