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    • 6. 发明授权
    • Separation of molybdenum
    • 分离钼
    • US5232559A
    • 1993-08-03
    • US793902
    • 1991-11-18
    • William A. SmithDavid L. MillerRobert A. Meyer
    • William A. SmithDavid L. MillerRobert A. Meyer
    • B01J31/40B01J37/34B01J38/48B01J38/68C25C1/22
    • B01J31/0201B01J31/0202B01J31/0239B01J31/34B01J31/4015B01J31/4076B01J37/348B01J38/48B01J38/68C25C1/22B01J2231/72
    • An organic solution of a soluble molybdenum compound is ammonated with ammonia, ammonium hydroxide and/or an ammonium salt in order to significantly reduce the electrical resistance of the solution and a direct electric current is passed therethrough in order to collect a significant amount of the molybdenum in solid form at the negative electrode. Preferably, an epoxidation reaction product formed by the molybdenum catalyzed reaction of propylene with tertiary butyl hydroperoxide to provide propylene oxide and tertiary butyl alcohol is separated by distillation into a propylene fraction, a propylene oxide fraction, a tertiary butyl alcohol fraction and a heavy liquid distillation fraction containing substantially all of the dissolved molybdenum catalyst, the heavy liquid distillation fraction is saturated with ammonia to precipitate the molybdenum therefrom, the precipitated molybdenum is removed from the ammonated heavy distillation fraction and a direct electric current is passed through the remaining liquid portion of the ammonated fraction in an electrolytic cell in order to collect a significant portion of the remaining molybdenum residually dissolved therein at the cathode.
    • 可溶性钼化合物的有机溶液用氨,氢氧化铵和/或铵盐氨化,以显着降低溶液的电阻,并且直流电流通过其中以收集显着量的钼 在固体形式的负极。 优选地,通过丙烯与叔丁基过氧化氢的钼催化反应形成环氧丙烷和叔丁醇形成的环氧化反应产物通过蒸馏分离成丙烯馏分,环氧丙烷馏分,叔丁醇馏分和重液体蒸馏 馏分含有基本上所有的溶解的钼催化剂,重液体蒸馏馏分用氨饱和,从中沉淀出钼,从氨化的重馏分中除去沉淀的钼,直流电流通过 在电解池中的氨化部分,以便在阴极收集残留的钼的很大部分。