Title:
ペロブスカイト型ランタンコバルト酸化物の製造方法
Document Type and Number:
Japanese Patent JP4067866
Kind Code:
B2
Abstract:
To provide an improved method which does not need a special reactor such as an autoclave and can efficiently produce powdery lanthanum-cobalt oxide having a desired particle size by a baking reaction at a relatively low temperatures.
Lanthanum chloride, cobalt chloride, and an alkali metal hydroxide are mixed, crushed, heat-treated, and washed. Preferably, the temperature of the heat treatment is 450-800°C, the molar ratio of lanthanum chloride/cobalt chloride/ alkali metal hydroxide in the reaction is 1/1/5, and sodium hydroxide or potassium hydroxide is selected as the alkali metal hydroxide.
COPYRIGHT: (C)2004,JPO
Inventors:
Takahiro Ito
Zhang
Fumiyoshi Saito
Zhang
Fumiyoshi Saito
Application Number:
JP2002129904A
Publication Date:
March 26, 2008
Filing Date:
May 01, 2002
Export Citation:
Assignee:
Nittetsu Mining Co., Ltd.
International Classes:
C01G51/00; H01M4/86; H01M4/88
Domestic Patent References:
| JP2002520248A | ||||
| JP1079019A | ||||
| JP8217461A | ||||
| JP6100319A |
Other References:
Chen-Feng Kao他,Ceramic Transactions,2001年,124,p197-206
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa
Zenichi Soeda
Hironori Honda
Toshimitsu Ichikawa
Zenichi Soeda