Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-11-04
1978-01-17
Douglas, Winston A.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
252415, 260666R, 260671R, 2606832, 26068347, 26068368, 2606837, 26068374, 208134, 423 62, 423 64, 423492, C07C 528, C07C 354, C10G 3506, B01J 2732
Patent
active
040692680
ABSTRACT:
Deactivated or partially deactivated hydrocarbon conversion catalysts comprising (a) one or more Lewis acids of the formula MX.sub.n where M is a component selected from Group IIIA, IVB, V, VIB or VIII Elements of the Periodic Table or their mixtures, X is a halogen, and n is the atomic ratio of halogen to M and varies from 1 to 8, and (b) a strong Bronsted acid, may be regenerated by contacting said catalysts with a halogen selected from the group consisting of fluorine or chlorine. If a portion of the catalyst has been hydrolyzed, the catalyst may be regenerated via halogenation as above or by contact with a hydrogen halide selected from the group consisting of hydrogen fluoride or hydrogen chloride and then fluorine. The preferred Lewis acid is a metal halide, preferably tantalum pentafluoride, niobium pentafluoride or mixtures thereof. The preferred Bronsted acid is a hydrogen halide, preferably hydrogen fluoride.
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Gillespie Ronald J.
Siskin Michael
Ditsler John W.
Douglas Winston A.
Exxon Research & Engineering Co.
Konopka P. E.
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