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    • 6. 发明授权
    • Process for electrolytic dimerization of N-substituted pyridinium salt
    • N-取代吡啶盐的电解二聚方法
    • US4176020A
    • 1979-11-27
    • US887131
    • 1978-03-16
    • Teruyuki MisumiSusumu FuruhashiMasaaki Shiga
    • Teruyuki MisumiSusumu FuruhashiMasaaki Shiga
    • C07D211/70C25B3/10
    • C07D211/70C25B3/105
    • A novel process for the preparation of an N,N'-disubstituted tetrahydro-4,4'-bipyridyl by electrolytic dimerization of the corresponding N-substituted pyridinium salt, characterized in that, using a system including an electrolytic cell having at least one diaphragm and an extractor disposed outside the electrolytic cell, the electrolytic dimerization is carried out while an aqueous catholyte containing the corresponding N-substituted pyridinium salt is circulated between the electrolytic cell and the extractor in which the product is extracted into an extraction solvent, followed by separation of the aqueous phase which alone is recycled into the electrolytic cell. According to the process of the present invention, the electrolytic dimerization can be continued stably for a long time, a high current efficiency can be attained and the desired product can be obtained in high yield.
    • 通过相应的N-取代的吡啶鎓盐的电解二聚制备N,N'-二取代的四氢-4,4'-联吡啶的新方法,其特征在于,使用包括具有至少一个隔膜的电解池的系统 以及设置在电解槽的外部的提取器,在含有相应的N-取代的吡啶盐的含水阴极电解液在电解槽和萃取器之间循环的电解二聚反应,其中产物被萃取到提取溶剂中,然后分离 的单独的水相再循环到电解槽中。 根据本发明的方法,可以长时间稳定地继续进行电解二聚,可以获得高的电流效率,可以高产率获得所需的产物。
    • 9. 发明授权
    • Solid-fluid contacting process
    • 固体流体接触过程
    • US4085042A
    • 1978-04-18
    • US697117
    • 1976-06-17
    • Teruyuki MisumiToshio MiyajiMasao Kasai
    • Teruyuki MisumiToshio MiyajiMasao Kasai
    • B01D15/00B01J47/10B01J49/00B01D15/06
    • B01J47/10B01D15/00B01J49/0078
    • In a fixed-bed solid-fluid contacting process, wherein adsorption and regeneration are performed in countercurrent flow, a portion of contaminated solid particles in the bed is extracted from the bed for washing, simultaneously when a fluid is treated by passing through the bed. The solid particles extracted are washed and recycled to the bed at the time of other operations, for example, regeneration step. The process is improved in the time cycle of treatment which is shortened and the pressure loss which is decreased. The process is also free from disturbance of bed and excellent in treatment efficiency. A simple and compact apparatus is available for the process. Typical example of application is ion exchange reaction.
    • 在固定床固体流体接触方法中,其中以逆流方式进行吸附和再生,床中的一部分被污染的固体颗粒从床中提取用于洗涤,同时当流体通过床处理时。 在其他操作时,提取的固体颗粒被洗涤并再循环到床上,例如再生步骤。 处理时间周期得到改善,缩短了压缩时间,降低了压力损失。 该过程也不受床的干扰,治疗效率极佳。 一个简单而紧凑的设备可用于此过程。 典型的应用实例是离子交换反应。