Preparation of dehydroxylated supports

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making

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502208, 502176, 502236, 502242, 502251, 502506, B01J 2100

Patent

active

055830854

ABSTRACT:
Dehydroxylated oxide (e.g. silica) particles are obtained by reacting oxide particles, having surface hydroxyl groups, with a dialkylcarbonate or diarylcarbonate. The resulting products have surface alkoxy or aryloxy groups and significantly reduced hydroxyl content. The treated oxide particles are especially suitable for use as catalyst supports, and especially as polyolefin catalyst supports.

REFERENCES:
patent: 4056668 (1977-11-01), Berger et al.
patent: 4593079 (1986-06-01), Rekers et al.
Ono, Y. et al. Chem. Mater. 5, 442 (1993).

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