Title:
シリカゲルを基礎とした触媒担体の最適製造法およびシリカゲル担持クロム触媒
Document Type and Number:
Japanese Patent JP4932110
Kind Code:
B2
Abstract:
The invention relates to a catalyst support and to a method for the production of the catalyst support comprising the following steps:a) production of a silicic acid hydrogel having a solids content of from 10 to 25% by weight (calculated as SiO2) whose particles are substantially spherical,b) extraction of the hydrogel particles with an alcohol until at least 60% of the water present in the hydrogel has been removed,c) drying of the resultant hydrogel until the residual alcohol content is less than 10% by weight (xerogel formation) at temperatures of >=160° C. at atmospheric pressure using an inert entraining gas,d) setting of the desired particle size of the resultant xerogel,in which the hydrogel particles have a particle size of >=8 mm before the extraction, and to a catalyst and to a method for the production of the catalyst by loading the catalyst support with a chromium compound. The invention also relates to a method for the production of polyolefins using the catalyst.
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Inventors:
De Lange, Paulus
Funk, Guido
Decas, Andreas
Kelet, Peter
Funk, Guido
Decas, Andreas
Kelet, Peter
Application Number:
JP2001522291A
Publication Date:
May 16, 2012
Filing Date:
September 05, 2000
Export Citation:
Assignee:
Basel, Polyolefin, Gezel Shaft, Mitt, Beschlenktel, Haftung
International Classes:
B01J21/08; B01J32/00; B01J37/00; B01J37/03; C01B33/16; C01B33/193; C08F4/02; C08F4/22; C08F4/24; C08F10/00
Domestic Patent References:
| JPH05255438A | 1993-10-05 | |||
| JPH08208215A | 1996-08-13 | |||
| JPH07187646A | 1995-07-25 | |||
| JPS5233984A | 1977-03-15 | |||
| JPS5233985A | 1977-03-15 |
Attorney, Agent or Firm:
Satoshi Eto