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    • 32. 发明授权
    • Regeneration of metal halide catalysts via halogenation
    • 通过卤化再生金属卤化物催化剂
    • US4069268A
    • 1978-01-17
    • US628587
    • 1975-11-04
    • Michael SiskinRonald J. Gillespie
    • Michael SiskinRonald J. Gillespie
    • B01J27/32C07C2/54C07C2/60C07C2/68C07C5/22C07C5/28C07C3/54C10G35/06
    • C07C2/68B01J27/32C07C2/54C07C2/60C07C5/2253C07C2527/1206C07C2527/133Y02P20/584
    • 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.
    • 包括(a)一种或多种式MXn的路易斯酸,其中M是选自元素周期表的IIIA,IVB,V,VIB或VIII族元素的组分或其混合物,X是卤素 ,n为卤素与M的原子比,为1〜8,(b)强布朗斯台德酸可通过使所述催化剂与选自氟或氯的卤素接触而再生。 如果催化剂的一部分已经被水解,则催化剂可以通过如上所述的卤化或通过与选自氟化氢或氯化氢然后氟化物的卤化氢接触来再生。 优选的路易斯酸是金属卤化物,优选五氟化钽,五氟化铌或其混合物。 优选的布朗斯台德酸是卤化氢,优选氟化氢。