发明名称 |
DIE-FORMED ARTICLES BASED ON PYROGENIC SILICON DIOXIDE, PROCESS FOR THEIR PREPARATION AND THEIR USE |
摘要 |
<p>Die-formed articles based on pyrogenic silica having the following physical-chemical data:… … external diameter 2 to 15 mm BET surface area 50 to 400 m<2>/g pore volume 0.6 to 1.3 ml/g breaking strength 40 to 120 N pore distribution no pores of <5 nm diameter, at least 80 % in the range from 5 to 40 nm diameter composition >95 % by weight of SiO2, the remainder being Al2O3 … are produced by compacting pyrogenic silica with kaolin and/or graphite, sugar, starch, urea and wax with addition of water, drying at a temperature from 80 to 120 DEG C, comminution to give a powder, pressing the powder to give die-formed articles and heat-treating these for a period of 0.5 to 6 hours at a temperature from 400 to 1200 DEG C. …<??>The die-formed articles can be used as a catalyst support or catalyst.</p> |
申请公布号 |
EP0327722(A3) |
申请公布日期 |
1989.10.11 |
申请号 |
EP19880121566 |
申请日期 |
1988.12.23 |
申请人 |
DEGUSSA AKTIENGESELLSCHAFT |
发明人 |
DELLER, KLAUS, DR.;KLINGEL, REINHARD, DR.;KRAUSE, HELMFRIED |
分类号 |
C04B38/06;B01J21/08;B01J21/12;B01J32/00;B01J35/10;B01J37/00;C04B35/14;(IPC1-7):C04B35/14;C04B38/00 |
主分类号 |
C04B38/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|