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Improvement of Heat Resistance for Lean NOx Catalyst
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 08, 2004 by SAE International in United States
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When the alkali metal-supported catalyst was treated at 830°C, the NOx conversion decreased because the alkali metals in the catalyst layer gradually moved to the cordierite honeycomb layer and reacted with the cordierite elements. This phenomena decreased to be added the basic metal oxide (α) in the catalyst layer. The improved catalyst with α 2 showed higher performance than the conventional catalyst in the model gas test. Moreover, the emission values of NOx, HC, and CO were 50% or less than Japanese domestic regulation values even after 830°C×60h heat treatment in a vehicle test.
- Hiroshi Ohno - Honda R&D Co., Ltd.
- Toshikatsu Takanohashi - Honda R&D Co., Ltd.
- Naohiro Satoh - Honda R&D Co., Ltd.
- Hidehiro Iizuka - Power & Industrial Systems R & D Laboratory, Hitachi Ltd.
- Masato Kaneeda - Power & Industrial Systems R & D Laboratory, Hitachi Ltd.
- Kazutoshi Higashiyama - Power & Industrial Systems R & D Laboratory, Hitachi Ltd.
- Osamu Kuroda - Automotive Systems, Hitachi Ltd.
- Norihiro Shinotsuka - Automotive Systems, Hitachi Ltd.
- Hiroko Watanabe - Automotive Systems, Hitachi Ltd.
CitationIizuka, H., Kaneeda, M., Higashiyama, K., Kuroda, O. et al., "Improvement of Heat Resistance for Lean NOx Catalyst," SAE Technical Paper 2004-01-1495, 2004, https://doi.org/10.4271/2004-01-1495.
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