发明名称 |
Exhaust gas catalyst carrier, exhaust gas catalyst employing the exhaust gas catalyst carrier, and method of manufacturing the exhaust gas catalyst carrier |
摘要 |
An exhaust-gas catalyst carrier made of a composite of θ-alumina and a zirconia-titania solid solution, an exhaust-gas catalyst employing the exhaust-gas catalyst carrier, and a method of manufacturing the exhaust-gas catalyst carrier are provided. |
申请公布号 |
US9156027(B2) |
申请公布日期 |
2015.10.13 |
申请号 |
US201013518422 |
申请日期 |
2010.12.21 |
申请人 |
Toyota Jidosha Kabushiki Kaisha |
发明人 |
Imoto Rui |
分类号 |
C01F7/02;C01G25/02;C01G27/02;C01G23/04;B01J27/24;B01J21/06;B01J23/44;C01G23/047;B01D53/94 |
主分类号 |
C01F7/02 |
代理机构 |
Finnegan, Henderson, Farabow, Garrett & Dunner, LLP |
代理人 |
Finnegan, Henderson, Farabow, Garrett & Dunner, LLP |
主权项 |
1. A method of manufacturing an exhaust-gas catalyst carrier the carrier comprising a composite of θ-alumina and a zirconia-titania solid solution, the method comprising:
preparing an aqueous solution of an aluminum salt, a zirconium salt, and a titanium salt, wherein a molar ratio of zirconia to the sum of zirconia and titania is between 80 molar % and 90 molar %; generating a precipitate from the aqueous solution by adjusting a pH of the aqueous solution to obtain a precipitate; aging the precipitate at a temperature equal to or below 200° C.; and calcinating the precipitate at a temperature equal to or above 900° C. and lower than 1200° C. for a period of 1 to 10 hours. |
地址 |
Toyota-shi, Aichi-ken JP |