Process of preparing a porous, pure silica

Details Process of preparing a porous, pure silica Process of preparing a porous, pure silica

1978-07-14

1980-09-30

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252451, 423336, 526106, B01J 2900, C01B 3312

Patent

active

042254647

ABSTRACT:
Process for the preparation of a porous, pure silica which is particularly suitable as a catalyst support for a chromium-oxide catalyst used in polymerizing of olefins. The process comprises the steps of converting a silicon-halogen compound to a silica and then admixing with water to form a silica gel. The gel is then spray-dried to achieve the required particle size and pore volume.
The silica can then be made into a catalyst by placing on the support a chromium compound and then heating in a non-reducing atmosphere.

REFERENCES:
patent: 3095384 (1963-06-01), Jenkins et al.
patent: 3132125 (1964-05-01), Schwander et al.
patent: 3239498 (1966-03-01), Witt
patent: 3819598 (1974-06-01), Galiano et al.
patent: 3954945 (1976-05-01), Lange et al.
patent: 4037042 (1977-07-01), Mueller-Tamm et al.
patent: 4067954 (1978-01-01), Volling

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