Conversion of direct process high-boiling residue to monosilanes

Details Conversion of direct process high-boiling residue to monosilanes Conversion of direct process high-boiling residue to monosilanes

1999-07-19

2000-01-11

Shaver, Paul F.

Chemistry of inorganic compounds

Silicon or compound thereof

Halogen containing

423347, 556468, C01B 3308

Patent

active

060132353

ABSTRACT:
A process for the production of monosilanes from the high-boiling residue resulting from the reaction of hydrogen chloride with silicon metalloid in a process typically referred to as the "direct process." The process comprises contacting a high-boiling residue resulting from the reaction of hydrogen chloride and silicon metalloid, with hydrogen gas in the presence of a catalytic amount of aluminum trichloride effective in promoting conversion of the high-boiling residue to monosilanes. The present process results in conversion of the high-boiling residue to monosilanes. At least a portion of the aluminum trichloride catalyst required for conduct of the process may be formed in situ during conduct of the direct process and isolation of the high-boiling residue.

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