发明名称 |
Twice-aged porous inorganic oxides, catalysts, and polymerization processes |
摘要 |
<p>A silica-titania cogel or silica-titania-chromium tergel is first aged at a substantially neutral pH, then aged at an alkaline pH, and then spray dried or azeotrope dried to form a xerogel. Optionally, a pore- preserving agent can be added prior to drying. The cogel can be impregnated with a chromium compound. The chromium-containing catalyst is activated by calcination. The activated catalyst can be used as a polymerization catalyst to polymerize mono-1-olefins.</p> |
申请公布号 |
EP1132130(A1) |
申请公布日期 |
2001.09.12 |
申请号 |
EP20010111945 |
申请日期 |
1989.07.24 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
KNUDSEN, ROLAND DOUGLAS;MCDANIEL, MAX PAUL;BOGGS, ELIZABETH ANN;BAILEY, FAY WALLACE |
分类号 |
C01B33/157;C01B33/12;B01J21/06;B01J37/03;C01B33/00;C01B33/16;C08F4/06;C08F4/18;C08F4/24;C08F4/60;C08F4/639;C08F4/69;C08F10/00;C08F10/02;(IPC1-7):B01J21/06;B01J21/08 |
主分类号 |
C01B33/157 |
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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