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Development of Three-way Catalyst Using Composite Alumina-Ceria-Zirconia
Technical Paper
2003-01-0811
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
To realize the high performance of the three-way catalyst, this development focused on the heat resistance of the CeO2-ZrO2 solid solution (CZ) that possesses the oxygen storage capacity (OSC). A new concept of the OSC compound with high durability is proposed. We devised a new method of inhibiting the coagulation of the primary CZ particles by placing diffusion barrier layers made of alumina among the primary CZ particles. This material is called “ACZ”.
The specific surface area of ACZ was larger than that of the conventional CZ after durability test. The sintering of Pt on the ACZ-added catalyst is inhibited and the crystal size of CZ in the ACZ-added catalyst is smaller than that in the CZ-added catalyst. The OSC and the light off temperature of the ACZ-added catalyst are improved.
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Authors
- Takaaki Kanazawa - Toyota Motor Corp.
- Juji Suzuki - Toyota Motor Corp.
- Toshihiro Takada - Toyota Motor Corp.
- Tadashi Suzuki - Toyota Central R&D Labs Research-domain 31
- Akira Morikawa - Toyota Central R&D Labs Research-domain 31
- Akihiko Suda - Toyota Central R&D Labs Research-domain 31
- Hideo Sobukawa - Toyota Central R&D Labs Research-domain 31
- Masahiro Sugiura - Toyota Central R&D Labs Research-domain 31
Citation
Kanazawa, T., Suzuki, J., Takada, T., Suzuki, T. et al., "Development of Three-way Catalyst Using Composite Alumina-Ceria-Zirconia," SAE Technical Paper 2003-01-0811, 2003, https://doi.org/10.4271/2003-01-0811.Also In
References
- Sugiura et al The 88 th Meeting of the Catalyst Society of Japan Oita October 2001
- Sobukawa et al Catalyst 43 2001 107 87 Catalyst Symposium 2A13
- Suzuki et al The 88 th Meeting of the Catalyst Society of Japan Oita October 2001
- Kanazawa et al The 88 th Meeting of the Catalyst Society of Japan Oita October 2001