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    • 92. 发明授权
    • Electrolytic recovery of cobalt oxo catalysts
    • 钴氧代催化剂的电解回收
    • US4419195A
    • 1983-12-06
    • US337593
    • 1982-01-07
    • David A. Young
    • David A. Young
    • C25B3/02C25B3/12
    • C25B3/02C25B3/12
    • According to one embodiment of the improved process of this invention, dicobalt octacarbonyl is produced in liquid medium by subjecting an aqueous solution of a tetracarbonylcobaltate salt in the presence of a solvent for dicobalt octacarbonyl to an externally applied voltage and electrical current at a magnitude and for a time sufficient to convert at least a portion of the tetracarbonylcobaltate anion to dicobalt octacarbonyl which is efficiently extracted into said solvent, thereby producing a solvent phase which can be recovered and passed to a cobalt-catalyzed olefin hydroformylation reaction zone as the source of at least a portion of the catalyst and olefin required in the olefin hydroformylation reaction to form the corresponding aldehydes. It has been surprisingly found that such a two-phase electrolysis can be performed to efficiently provide high yields of dicobalt octacarbonyl while substantially avoiding the fouling problems associated with aqueous-phase electrolysis.
    • 根据本发明改进方法的一个实施方案,在液体介质中通过使四羰基钴酸盐的水溶液在溶剂中存在下将八羰基二钴进行外加施加的电压和大小为电流的电流而产生八羰基二钴, 足以将至少一部分四羰基钴酸根阴离子转化成二羰基八羰基的时间,其被有效地提取到所述溶剂中,从而产生可以回收并转移到钴催化的烯烃加氢甲酰化反应区的溶剂相,至少为 在烯烃加氢甲酰化反应中需要一部分催化剂和烯烃以形成相应的醛。 已经令人惊奇地发现,可以进行这种两相电解以有效地提供高产率的八羰基二钴,同时基本上避免了与水相电解相关的结垢问题。