Catalytic oxidation of C.sub.2 -C.sub.4 halogenated hydrocarbons

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Halogenous component

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423245, 423481, 423488, B01D 5334

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active

040596770

ABSTRACT:
C.sub.2 -C.sub.4 halogenated, e.g., chlorinated and brominated, hydrocarbons, such as vinyl chloride, present in a gas stream are removed therefrom, e.g., incinerated, by contacting the gas stream with an oxygen-containing gas in the presence of metal oxide catalyst system consisting essentially of the oxides of manganese and cobalt at relatively low temperatures, e.g., 100.degree. C. Commonly, the halogenated hydrocarbon is present in the gas stream to be treated in small amounts, e.g., less than 0.05 weight percent. The temperature of treatment can vary, e.g., from 20.degree. C. to 500.degree. C., and can be adjusted within said range depending on the relative humidity of the gas stream treated to maintain catalytic activity. Preferably, treatment occurs under conditions of low relative humidity, e.g., less than 5 percent, and the metal oxides of the catalyst system are hydrated.

REFERENCES:
patent: 3845191 (1974-10-01), Bruce, Jr.
patent: 3933980 (1976-01-01), Smalheiser
patent: 3972979 (1976-08-01), Kageyama

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