Question

Give the equation for preparation of silicon hydride.

Answer 1

A METHOD IS PROVIDED FOR CONVERTING ORGANOSILICON HALIDES, FOR EXAMPLE, HALOSILANES AND BIS(HALOSILYL)HYDROCARBONS, TO THE CORRESPONDING HYDRIDES. SILICON HALIDE REDUCTION IS EFFECTED BY UTILIZING CERTAIN ORGANOMETALLIC HYDRIDES.

Answer 2

Give the equation for preparation of silicon hydride.

Silicon hydride is also called as Silane. It can be produced by the following methods:

Mg2Si + 4 HCl → 2 MgCl2 + SiH4

It can also be prepared from metallurgical grade silicon in a two-step process.

First, silicon is treated with hydrogen chloride at about 300 °C to produce trichlorosilane, HSiCl3, along with hydrogen gas,

The chemical equation is

Si + 3 HCl → HSiCl3 + H2

The trichlorosilane is then converted to a mixture of silane and silicon tetrachloride. This redistribution reaction requires a catalyst:

4 HSiCl3 → SiH4 + 3 SiCl4