Title:
CATALYST SUPPORT, METHOD FOR MAKING A PRECURSOR GEL FOR A CATALYST SUPPORT
Document Type and Number:
WIPO Patent Application WO1994026790
Kind Code:
A1
Abstract:
Catalyst support containing at least two components chosen among silica, alumina and aluminium phosphate, with a specific surface of 100 to 800 m<2>/g, a crystallization temperature higher or equal to 700 DEG C, a pore volume of 1.5 to 4 cm<3>/g, and the relationship between the specific surface (SS) and pore volume (PV) being: SS < (VP x 564 - 358). Process for making such a support, comprising mixing an alcohol, water and a silicon alcoholate and an acid in such conditions that the gelification or precipitation of the silica is avoided, adding an acid solution of an aluminium compound and/or a solution of a phosphate ion source, adding a gelling agent, collecting a gel which is washed with water and then with an organic liquid, drying thereafter the gel until a powder is formed, this powder being then calcined. Olefin polymerization in the presence of a chromium-containing catalyst on the afore-mentioned support.
Inventors:
DERLETH HELMUT (DE)
KOCH BENOIT (BE)
RULMONT ANDRE (BE)
WIJZEN FABIENNE (BE)
KOCH BENOIT (BE)
RULMONT ANDRE (BE)
WIJZEN FABIENNE (BE)
Application Number:
PCT/EP1994/001513
Publication Date:
November 24, 1994
Filing Date:
May 10, 1994
Export Citation:
Assignee:
SOLVAY (BE)
KOCH BENOIT (BE)
RULMONT ANDRE (BE)
WIJZEN FABIENNE (BE)
KOCH BENOIT (BE)
RULMONT ANDRE (BE)
WIJZEN FABIENNE (BE)
International Classes:
B01J21/04; B01J21/08; B01J21/12; B01J23/26; B01J27/16; B01J32/00; B01J35/10; B01J37/03; C08F4/02; C08F4/22; C08F4/24; C08F4/42; C08F4/645; C08F4/69; C08F4/78; C08F10/00; C08F10/02; (IPC1-7): C08F4/02; B01J27/16; B01J21/12
Foreign References:
| EP0283815A1 | 1988-09-28 | |||
| FR2315997A1 | 1977-01-28 | |||
| DE2154764A1 | 1972-05-25 | |||
| EP0055864A2 | 1982-07-14 |
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