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Design of a Practical Intelligent Catalyst
Technical Paper
2003-01-0813
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
We have reported the innovation of “An Intelligent Catalyst” which has the function for self-regeneration of Pd realized through the solid solution and segregation of Pd in a perovskite crystal [1, 2, 3, 4 and 5].
We have looked for a design configuration for LaFePdO3 perovskite in the washcoat by comparing single and double layer washcaots as well as different loading locations for precious metals in order to maximize the Intelligent Catalyst's function in the practical conditions. The catalysts were attached to an engine exhaust system and subjected to an accelerated aging. The bed temperature of the catalysts reached to 1050 °C. The performance of the catalysts was evaluated on the engine dynamometer.
Catalytic activity and long durability were improved by development of the washcoat configuration. The optimum design of the washcoat was double-layer with a tri-metal (Pt, Rh and Pd) system. The perovskite was located in the lower layer. This improved intelligent catalyst exhibits excellent activity under practical conditions and reduces the loading of precious metals through its function for self-regeneration.
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Authors
- Noboru Sato - Cataler Corporation
- Hirohisa Tanaka - Daihatsu Motor Co., Ltd
- Isao Tan - Daihatsu Motor Co., Ltd
- Mari Uenishi - Daihatsu Motor Co., Ltd
- Nobuhiko Kajita - Daihatsu Motor Co., Ltd
- Masashi Taniguchi - Daihatsu Motor Co., Ltd
- Keiichi Narita - Cataler Corporation
- Mareo Kimura - Cataler Corporation
Topic
Citation
Sato, N., Tanaka, H., Tan, I., Uenishi, M. et al., "Design of a Practical Intelligent Catalyst," SAE Technical Paper 2003-01-0813, 2003, https://doi.org/10.4271/2003-01-0813.Also In
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