发明名称 |
PROCESS FOR PRODUCING COMPOSITE METAL OXIDE |
摘要 |
<p>A process for producing a composite metal oxide of an acidic metal oxide and a basic metal oxide, wherein the process comprises (a) providing an aqueous solution containing a colloidal particle of the acidic metal oxide and a salt of the basic metal, (b) adjusting the pH of the aqueous solution to a pH at which a part of the basic metal dissolves in the aqueous solution, the remaining of the basic metal precipitates as a hydroxide and has a positive zeta potential, and the colloidal particle of the acidic metal oxide is not dissolved and has a negative surface potential, and then maintaining this pH over a predetermined time to obtain a precursor of the composite metal oxide, and (c) drying and firing the precursor of the composite metal oxide obtained.</p> |
申请公布号 |
EP2050716(A1) |
申请公布日期 |
2009.04.22 |
申请号 |
EP20070791125 |
申请日期 |
2007.07.17 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
TAKESHIMA, SHINICHI;KOYAMA, AKIO |
分类号 |
C01B13/36;B01D53/86;B01D53/94;B01J23/63;B01J32/00;B01J37/03;B01J37/04;C01B33/00;C01G23/00 |
主分类号 |
C01B13/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|