Chemistry of inorganic compounds – Silicon or compound thereof – Binary compound
Patent
1989-10-02
1990-05-22
Doll, John
Chemistry of inorganic compounds
Silicon or compound thereof
Binary compound
423489, 423499, 556176, C01B 3304, C01B 908, C07F 506
Patent
active
049276166
ABSTRACT:
A process is provided wherein tertiary ammonium trichlorosilyl, a complexing tertiary amine, and an alkali metal aluminum tetrahydride are reacted together in molar proportion of about 1:2:3, such that silane and tertiary amine alane are produced. Tertiary ammonium trichlorosilyl may be pre-formed or formed in situ by the reaction of trichlorosilane and tertiary amine. Yields are dramatically higher when the process is conducted in the presence of a tris(polyalkoxyalkyl)amine phase transfer catalyst.
A sequential process is also provided for the preparation of silane and aluminum trifluoride. In the first part of this sequence, silane and tertiary amine alane are produced as described above. In the second part of the sequence, silicon tetrafluoride is reacted with the amine alane, producing additional silane and aluminum trifluoride.
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Cuomo Lori F.
Doll John
Ethyl Corporation
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