Preparation of silanes

Details Preparation of silanes Preparation of silanes

1997-01-10

1998-07-21

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

423342, C07F 716

Patent

active

057837210

ABSTRACT:
An (alkylhalo)silane is prepared by charging a reactor with a contact mass comprising metallic silicon powder and a copper catalyst and feeding a gas containing an alkyl halide into the reactor whereby the silane is formed by direct synthesis. The contact mass in the reactor during reaction consists of particles having a mean particle size of 5-150 .mu.m and containing 10-80% by weight of particles having a particle size of up to 30 .mu.m and 10-90% by weight of particles having a particle size of at least 90 .mu.m. The contact mass is well fluidized to ensure rapid and uniform reaction whereby the (alkylhalo)silane is prepared at high selectivity with a minimized elutriating loss of contact mass.

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