Silane production from magnesium hydride

Details Silane production from magnesium hydride Silane production from magnesium hydride

1985-05-17

1988-02-16

Sheehan, John P.

Chemistry of inorganic compounds

Silicon or compound thereof

Binary compound

423647, C01B 3304

Patent

active

047254190

ABSTRACT:
A process for producing silane by reacting a silicon halide with highly reactive magnesium and a cyclic process for producing silane by reacting magnesium hydride with a silicon halide, reacting the magnesium halide as formed with an alkali metal to recover elemental magnesium, and pressure hydrogenating said magnesium to form magnesium hydride and repeat the cycle. A highly reactive magnesium hydride is formed by the homogeneously catalyzed pressure hydrogenation of magnesium, preferably using an activated transition metal catalyst such as TiCl.sub.4 and a polycyclic organic compound such as anthracene. The highly activated magnesium hydride is thereafter used for reaction with silicon halide to produce silane.

REFERENCES:
patent: 3050366 (1962-08-01), Ringwald
patent: 3485585 (1969-12-01), Snyder
patent: 3617218 (1971-11-01), Van Tamelen
Chemical Abstracts, p. 124, vol. 101, 1984, No. 101:113247b.
The Condensed Chemical Dictionary, 8th ed., Van Nostrand Reinhold Co., 1971, p. 431.
dePape, Ann. Chim., 1963, pp. 186-196.
"Catalytic Synthesis of Magnesium Hydride Under Mild Conditions", Bogdanovic et al., 19 Angew. Chem., (Int. Ed. Engl.), pp. 818-819, (1980).
"Preparation of Highly Reactive Magnesium Metal", Rieke et al., 94 J.A.C.S., pp. 7178-7179, (1972).
"Preparation of Highly Reactive Metal Powders", Rieke et al., 46 J. Org. Chem., pp. 4323-4324, (1981).

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