The present situation and development trend of conversion technology of silicon tetrachloride

The present situation and development trend of technology for the production of some kinds of chemical products,such as fumed silica,ethyl silicate,polysilicon,optical fiber and trichlorosilane,by using silicon tetrachloride as raw material are introduced.The market volumes of the above chemical products and their effects on the consumption of silicon tetrachloride are analyzed.For the domestic large scale production of polysilicon springing up soon,conversion into trichlorosilane is the most efficient method to solve the by-product silicon tetrachloride.The hydrogenation technology of silicon tetrachloride at home and abroad is introduced emphatically as well as the new plasma technology for silicon tetrachloride reduction which is being developed by the authors.