Preparation of superfine zirconia with large specific surface area |
Title： |
| Preparation of superfine zirconia with large specific surface area |
|
Application Number： |
00105554 |
Application Date： |
2000/03/31 |
Announcement Date： |
2000/09/27 |
Pub. Date： |
|
Publication Number： |
1267568 |
Announcement Number： |
1102429 |
Grant Date： |
|
Granted Pub. Date： |
2003-3-5 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
B01J 21/06, B01J 35/10, C01G 25/02 |
Applicant(s)： |
Qinghua Univ. |
Inventor(s)： |
Xu Baiqing, Yin Shuangfeng, Zhang Xin |
Key Words： |
Preparation, superfine, zirconia, large specific surface area |
Abstract： |
The preparation includes the preparation of Zr(OH)4/ZrO(OH)2 gel, digestion and ageing, suction filtering, washing, drying, roast and other steps to obtain the product of the present invention. By means of the control of the temperature, the period and system pH value and used alkali property of digestion as well as the conditions including the temperature, period, atmosphere, etc. of drying and roast, superfine zirconia with large specific surface area may be prepared. The zirconia of the present invention exhibits excellent catalytic performance and carrier effect in various catalytic reactions. |
Claim： |
|
Priority： |
|
PCT： |
|
LegalStatus： |
|
Relevancy information
