Process and device for preparing compounds or high purity compounds with general formula R<4-m-n>Cl<m>H<n>, especially silicone hydride

Abstract

The invention relates to a method for making compound or high-purity compound with the general formula equal to R4-m-nAClmHn (A is equal to Si, Ge, Ti or Sn) and a device suitable to carry out the method. Particularly, the invention relates to a device and a method for making silicane with the general formula equal to HnSiCl4-n (n is equal to 1, 2, 3 or 4) through disproportionating highly chloridized silicane under the action of catalyst, wherein the device used in the method is an integrated body based on at least one distillation tower and at least one bypass reactor, i.e. an outer reactor. In one respect, the invention relates to the catalyst of alkylamino trialkoxy silane with the general formula equal to (CxH2x+1O)3Si(CH2)zN(CyH2y+1)2. In addition, the invention also relates to a method for making trichlorosilane (HSiCl3) through the catalytic hydrogenation and dehalogenation of tetrachloro silicane (SiCl4) under a hydric condition. In another respect, the invention relates to a method for making alkyl hydrochlorosilane with the general formula equal to Ia(R4-m-n SiClmHn), wherein m is equal to 1 or 2, while n is equal to 1 or 2; moreover, m plus n is not equal to 3, and R represents alkyl with one to five carbon atoms. Moreover, the invention also discloses a method and a device used in the treatment of silicon tetrachloride, germanium tetrachloride, titanium tetrachloride or stannum tetrachloride mixed with at least one sort of hydrogen containing compound which is difficult to separate through distillation. In addition, the invention also discloses a continuous method, equipment and a reactor used to make high-purity silicon tetrachloride, germanium tetrachloride, titanium tetrachloride or stannum tetrachloride.

Description

Process and apparatus for the preparation of compounds of the general formula R(4-m-n)AClmHn, especially silanes, or highly pure compounds Technical field: The invention relates to a process for compounds or highly pure compounds having the general formula R(4-m-n)AClmHn where A is equal to silicon, germanium, titanium or tin, and to devices suitable for carrying out the process. The invention also relates to a device and a process for the preparation of silanes of the general formula (I) R(4-m-n)AClmHn by reaction of at least one compound of the general formula (II)R(4-p-q)AClpHq, and the formula (II) R is a linear, branched or cyclic optionally substituted hydrocarbon group with 1 to 8 C atoms, preferably methyl, ethyl, propyl, chloromethyl, chloroethyl, chloropropyl The group - just to mention some of the compounds - A represents an element of the Periodic Table of Elements (PSE) having a valence state of +4, preferably a tetravalent selected from a series of metals such ...

AI Technical Summary

Problems solved by technology

A specific drawback of this method is that a reducing agent must be added

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