Low temperature catalytic combustion of chlorohydrocarbons

Details Low temperature catalytic combustion of chlorohydrocarbons Low temperature catalytic combustion of chlorohydrocarbons

C - Chemistry, Metallurgy

07

C

260/660.2

C07C 17/15 (2006.01) C01B 7/01 (2006.01) C07C 17/38 (2006.01)

Patent

CA 1041125

LOW TEMPERATURE CATALYTIC COMBUSTION OF CHLOROMYDROCARBONS ABSTRACT OF THE DISCLOSURE There is disclosed an improved method of making chlor- inated derivatives of ethylene wherein chlorine-containing by- products are burned in a catalytic combustion reactor to pro- duce primarily a hydrogen halide which is recycled to the chlor- inated derivative reaction and the neat of combustion from said reactor is utilized to preheat the materials used in said chlorinated derivative reaction. The catalyst employed is one containing 0.01% to 0.50% of platinum or palladium on 99.99% to 99.50% Al2O3, SiO2 or a combination of A12O3 and SiO2 as a support and having a surface area of at least 50 square meters per gram. The catalytic combustion reaction is carried out at temperatures in the range of about 300°C. to about 450°C. to produce a mixture of gases containing essentially hydrogen chlor- ide and being substantially free of elemental chlorine and cnlorohydrocarbon compounds, said gases being then mixed with ethylene and reacted to form ethylene dichloride (EDC). -1-

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