Process for the oxychlorination of hydrocarbons with ammonium chloride
AssigneeRhone-Progil
InventorJean-Claude Daumas
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Abstract
The invention is addressed to the manufacture of chlorinated hydrocarbons by catalytic oxychlorination, in which the chlorine is derived, at least in part, from ammonium chloride, and in which a suitable catalyst comprises a support formed of silica and magnesium with a catalytic active portion formed of copper chloride and an alkali metal chloride. Such catalysts give good yields, little combustion of hydrocarbons and low impurities.
Claims12
A process for the catalytic oxychlorination of hydrocarbons with chlorine derived at least in part from ammonium chloride comprising contacting a gaseous mixture containing a hydrocarbon, ammonium chloride and an oxygen-containing gas with a catalyst of copper chloride and an alkali metal chloride on a support consisting essentially of silica and magnesia at a temperature within the range of 200.degree. to 380.degree. C.
A process for the catalytic oxychlorination of hydrocarbons with chlorine derived at least in part from ammonium chloride comprising contacting a gaseous mixture containing a hydrocarbon, ammonium chloride and an oxygen-containing gas with a catalyst of copper chloride and an alkali metal chloride on a support consisting essentially of silica and magnesia prepared by impregnating a silica hydrogel with a magnesium compound convertible to magnesia upon calcination, and then calcining the impregnated hydrogel, at a temperature within the range of 200.degree. to 380.degree. C.
A process for the catalytic oxychlorination of ethylene with chlorine derived at least in part from ammonium chloride comprising contacting a gaseous mixture containing ethylene, ammonium chloride and an oxygencontaining gas with a catalyst of copper chloride and an alkali metal chloride on a support consisting essentially of silica and magnesia at a temperature within the range of 200.degree. to 380.degree. C.
A process for the catalytic oxychlorination of ethylene with chlorine derived at least in part from ammonium chloride comprising contacting a gaseous mixture containing ethylene, ammonium chloride and an oxygen-containing gas with a catalyst of copper chloride and an alkali metal chloride on a support consisting essentially of silica and magnesia prepared by impregnating a silica hydrogel with a magnesium compound convertible to magnesia upon calcination, and then calcining the impregnated hydrogel, at a temperature within the range of 200.degree. to 380.degree. C.
A process for the catalytic oxychlorination of ethylene to form 1,2-dichloroethane with chlorine derived at least in part from ammonium chloride comprising contacting a gaseous mixture containing ethylene, ammonium chloride and an oxygen-containing gas with a catalyst of copper chloride and an alkali metal chloride, with the atomic ratio of alkali metal to copper being within the range of 0.3 to 1.3, on a support consisting essentially of silica and magnesia, with the magnesia being present in an amount within the range of 5 to 30% based upon the total weight of the support, at a range of 200.degree. to 380.degree. C and a contact time for at least one second.
Dependencies are inferred from the claim text.