Electrochemical fluorination of 1,2-dichloroethane and 1,1,2-trichloroethane
    1.
    发明授权
    Electrochemical fluorination of 1,2-dichloroethane and 1,1,2-trichloroethane 失效
    1,2-二氯乙烷和1,1,2-三氯乙烷的电化学荧光

    公开(公告)号:US3620941A

    公开(公告)日:1971-11-16

    申请号:US3620941D

    申请日:1970-02-24

    CPC classification number: C25B3/08

    Abstract: In the electrochemical fluorination of 1,2-dichloroethane and 1,1,2-trichloroethane feedstocks, the selectivity to the products 1,2-dichlorotetrafluoroethane and 1,1,2-trichloro-1,2,2trifluoroethane is increased by charging a mixture of said feedstocks to the electrochemical fluorination cell instead of charging said feedstocks to the cell separately.

    Combination electrode
    5.
    发明授权
    Combination electrode 失效
    组合电极

    公开(公告)号:US3658685A

    公开(公告)日:1972-04-25

    申请号:US3658685D

    申请日:1970-02-09

    CPC classification number: C25B3/08

    Abstract: A combination electrode comprising a porous element, e.g., porous carbon, and a metal element in contact with an outer exposed surface of said porous element.

    Abstract translation: 包括多孔元件(例如多孔碳)和与所述多孔元件的外部暴露表面接触的金属元件的组合电极。

    Multi-porosity electrode for electrochemical conversion
    7.
    发明授权
    Multi-porosity electrode for electrochemical conversion 失效
    用于电化学转化的多孔电极

    公开(公告)号:US3655535A

    公开(公告)日:1972-04-11

    申请号:US3655535D

    申请日:1970-09-24

    CPC classification number: C25B3/08 C25B11/035

    Abstract: In an electrochemical process, the reaction takes place within the confines of a porous electrode element having a core section which is relatively impervious to the electrolyte and an outer section in contact with the electrolyte which has relatively large pores.

    Abstract translation: 在电化学过程中,反应发生在具有与电解液相对不透过的芯部分的多孔电极元件和与具有相对较大孔的电解质接触的外部部分的范围内。

    Recovery of products from electrochemical fluorination
    8.
    发明授权
    Recovery of products from electrochemical fluorination 失效
    电化学回收产品

    公开(公告)号:US3650917A

    公开(公告)日:1972-03-21

    申请号:US3650917D

    申请日:1969-08-25

    CPC classification number: C25B3/08

    Abstract: FLUORINATED PRODUCTS ARE RECOVERED FROM AN EFFLUENT STREAM FROM AN ELECTROLYTIC CELL IN AN ELECTROCHEMICAL FLUORINATION PROCESS BY EMPLOYING A COMBINATION OF STEPS COMPRISING COOLING SAID EFFLUENT STREAM TO A TEMPERATURE SUFFICIENT TO CONDENSE HYDROGEN FLUORIDE AND HIGHER BOILING CELL PRODUCTS CONTAINED IN SAID EFFLUENT STREAM, CONTACTING THE NONCONDENSED PORTION OF SAID COOLED EFFUENT STREAM WITH AN ABSORBENT SELECTED FROM THE GROUP CONSISTING OF (A) THE FLUORINATABLE FEEDSTOCK TO THE ELECTROLYTIC CELL, (B) A HIGH BOILING BY-PRODUCT FRACTION PRODUCED AS A BYPRODUCT IN THE FLUORINATION REACTION, AND (C) MIXTURES OF SAID (A) AND SAID (B), AND RECOVERING FLUORINATED PRODUCTS FROM THE RESULTING RICH ABSORBENT AND THE CONDENSED PORTION OF SAID COOLED EFFLUENT STREAM.

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