发明名称 |
Granules Based on Pyrogenically Prepared Silicon Dioxide, Method for Their Preparation and Use Thereof |
摘要 |
<p>Granulates (I) based on pyrogenic silica are claimed, with the following physical properties: - mean particle dia.: 10-120 microns - BET surface: 40-400 m<2>/g - pore vol.: 0.5-2.5 ml/g - pore size distribution: less than 5% of total pore vol. with a pore dia. less than 5 nm, the rest meso- and macro-pores -pH: 3.6-8.5 - tamped density: 220-700 g/l. Also claimed is the prodn. of (I) by dispersing pyrogenic silica in water and spray drying the dispersion. The granules obtd. are then (a) heated for 1-8 hrs. at 150-1100 deg.C; or (b) silanised; or (c) heat-treated as in (a) and then silanised.</p> |
申请公布号 |
CA2168677(A1) |
申请公布日期 |
1996.08.05 |
申请号 |
CA19962168677 |
申请日期 |
1996.02.02 |
申请人 |
DEGUSSA AKTIENGESELLSCHAFT |
发明人 |
DELLER, KLAUS;KRAUSE, HELMFRIED;MEYER, JUERGEN;KERNER, DIETER |
分类号 |
B01J2/10;B01J21/08;B01J35/10;C01B33/12;C01B33/18;C08F4/00;C08F4/02;C08F4/60;C08F4/64;C08F10/00;C08F10/02;C09C1/30;(IPC1-7):B01J21/08;B01J32/00 |
主分类号 |
B01J2/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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