Method for producing tetrahalosilanes
AssigneeSpawnt Private S.à.r.l.
InventorNorbert Auner
Life of this patent
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Abstract
A method produces tetrahalosilanes (SiX4) (X=halogen, more particularly Cl, F) from processed rock masses including high-viscosity hydrocarbons and SiO2 and/or silicates, or from the residue masses obtained in the course of such processing. The masses may be heated in a stream of hydrogen halide, and the (SiX4) which forms in the course of this heating is captured or distilled off. The masses may be admixed with hydrofluoric acid (HF) and/or alkali metal fluoride or alkaline earth metal fluoride and with sulfuric acid, and the (SiX4) which forms in the course of the admixing is captured or distilled off.
Claims18
A method of producing tetrahalosilanes (SiX4) wherein X=halogen from processed rock masses comprising high-viscosity hydrocarbons and SiO2 and/or silicates, or from residue masses obtained in such processing, comprising heating the masses in a stream of hydrogen halide and capturing or distilling off formed SiX4.
A method of producing tetrahalosilanes (SiX4) wherein X=halogen from processed rock masses comprising high-viscosity hydrocarbons and SiO2 and/or silicates, or from residue masses obtained in such processing, comprising admixing the masses with hydrofluoric acid (HF) and/or alkali metal fluoride or alkaline earth metal fluoride and with sulfuric acid and capturing or distilling off formed SiX4.
Dependencies are inferred from the claim text.