Selective dehydrohalogenation of tertiary halogenated hydrocarbons and removal of tertiary halogenated hydrocarbon impurities from a halogenated hydrocarbon product

摘要

A method for removing a tertiary halogenated hydrocarbon impurity from a target hydrocarbon compound, comprising: providing a first mixture comprising the target hydrocarbon compound and a tertiary halogenated hydrocarbon impurity; contacting the first mixture containing the tertiary halogenated hydrocarbon impurity with a dehydrohalogenation catalyst effective to catalyze a conversion of the tertiary halogenated hydrocarbon impurity to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon and hydrogen halide, thereby providing a modified mixture, the dehydrohalogenation catalyst comprising a sorbent that includes silicon oxide, aluminum oxide or both silicon oxide and aluminum oxide; and distilling the modified mixture to separate and recover a purified target hydrocarbon compound.