Catalytic hydrodechlorination of a chloromethane

Details Catalytic hydrodechlorination of a chloromethane Catalytic hydrodechlorination of a chloromethane

1993-10-15

1995-06-20

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570101, 570171, 570257, C07C 1723, C07C 17354

Patent

active

054262526

ABSTRACT:
Chloromethane compounds including carbon tetrachloride and the chlorofluoromethane compounds, such as dichlorodifluoromethane, can be catalytically hydrodechlorinated, e.g., in the case of dichlorodifluoromethane to monochlorodifluoromethane and/or difluoromethane, by treatment with hydrogen in the presence of a transition metal carbide catalyst, for example, a Group IVB metal carbide, such as tungsten carbide, supported on an oxidic support, such as alumina, optionally with a passivating layer of ceramic, such as silicon carbide, between the oxidic support and catalyst. The catalyst preferably has a surface area of no less than about 1 m.sup.2 /gm.

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