Preparation of porous, pure silica dioxide and of chromium-oxide

Details Preparation of porous, pure silica dioxide and of chromium-oxide Preparation of porous, pure silica dioxide and of chromium-oxide

1981-10-26

1983-05-31

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252451, 423338, B01J 2900, C10B 3312

Patent

active

043860168

ABSTRACT:
A process is provided for the preparation of an improved porous silicon dioxide catalyst support, wherein a silicon dioxide prepared by flame hydrolysis is converted into an aqueous gel and thereafter admixed with at least 15 vol. % of a C.sub.1 to C.sub.5 alkanol, followed by spray-drying of the resulting aqueous/alcohol silica gel. The resulting catalyst support is particularly useful with chromium oxide catalysts for polyalkene polymerizations.

REFERENCES:
patent: 2475984 (1944-03-01), Owen
patent: 4037042 (1977-07-01), Mueller-Tamm et al.
patent: 4206297 (1980-06-01), Hoff et al.
patent: 4225464 (1980-09-01), Scholten et al.
patent: 4228260 (1980-10-01), Scholten et al.

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