摘要:
A method for purifying a crude chlorosilane containing a boron compound, which is characterized by comprising a step wherein a chlorosilane containing a boron compound is brought into contact with an ion-exchange resin, and a step wherein the chlorosilane containing a boron compound is brought into contact with a silica adsorbent. It is preferable that the crude chlorosilane is brought into contact with the ion-exchange resin first, and then brought into contact with the silica adsorbent. In this connection, a silica gel is preferable as the silica absorbent, and a resin having a functional group represented by the following general formula: —CH2NR1R2 (wherein R1 and the like are as defined in the description) is preferable as the ion-exchange resin.
摘要翻译:一种纯化含有硼化合物的粗氯硅烷的方法,其特征在于包括使含有硼化合物的氯硅烷与离子交换树脂接触的步骤,以及将含有硼化合物的氯硅烷置于 与二氧化硅吸附剂接触。 优选将氯代氯硅烷首先与离子交换树脂接触,然后与二氧化硅吸附剂接触。 就此而言,硅石作为二氧化硅吸收剂是优选的,作为离子交换剂,优选具有由以下通式表示的官能团的树脂:-CH 2 NR 1 R 2(其中R 1等如说明书中所定义) 树脂。
摘要:
Disclosed is a method for collecting hexachlorodisilane which is produced as a by-product in the production of trichlorosilane from tetrachlorosilane and hydrogen. The method has the steps of: reacting a source gas composed of vaporized trichlorosilane and hydrogen at a temperature ranging from 700 to 1400° C. to yield a reaction product gas; cooling the reaction product gas to a temperature ranging from 30 to 60° C. to yield a cooled condensate liquid containing hexachlorodisilane; and concentrating and collecting a high boiling material containing hexachlorodisilane from the cooled condensate liquid.