Methods of indirect electrochemistry using ionomer coated electrodes
    2.
    发明授权
    Methods of indirect electrochemistry using ionomer coated electrodes 失效
    使用离聚物涂层电极的间接电化学方法

    公开(公告)号:US5399245A

    公开(公告)日:1995-03-21

    申请号:US116338

    申请日:1993-09-03

    IPC分类号: C25B1/00 C25B9/10

    CPC分类号: C25B1/00 C25B9/10

    摘要: Novel methods of indirect electrochemistry are provided. The methods use ionomer coated electrodes for regeneration of the redox reagent in the indirect electrochemical process. The electrode may be either directly coated with a thin ionomer coating, or alternatively may electrodeposited within an ionomer coated electronically conductive substrate. Ionomers used to coat the electrodes of the subject method include Nafion.RTM. and Tosflex.RTM..

    摘要翻译: 提供了间接电化学的新方法。 该方法使用离聚物涂覆的电极在间接电化学过程中再生氧化还原试剂。 电极可以直接涂覆有薄的离聚物涂层,或者可以电沉积在涂覆有离子交联聚合物的电子导电基底中。 用于涂覆本发明方法的电极的离聚物包括Nafion TM和Tosflex TM。

    Kolbe electrolysis in a polymer electrolyte membrane reactor
    3.
    发明授权
    Kolbe electrolysis in a polymer electrolyte membrane reactor 失效
    高分子电解质膜反应器中的Kolbe电解

    公开(公告)号:US06238543B1

    公开(公告)日:2001-05-29

    申请号:US09174197

    申请日:1998-10-16

    IPC分类号: C25B310

    CPC分类号: C25B3/10

    摘要: Disclosed is a process, for the electrolytic coupling of carboxylic acids, carried out in a polymer electrolyte membrane reactor. The reactor design (1) discloses the use of gaseous or neat liquid reactants without the use of organic cosolvents, (2) prevents the loss of platinum, and (3) permits the use of oxygen reduction to water as the cathode reaction.

    摘要翻译: 公开了一种在聚合物电解质膜反应器中进行的羧酸的电解偶联的方法。 反应器设计(1)公开了不使用有机共溶剂的气态或纯液体反应物的使用,(2)防止铂的损失,和(3)允许使用氧还原为水作为阴极反应。

    Process for the electrooxidation of methanol to formaldehyde and methylal
    4.
    发明授权
    Process for the electrooxidation of methanol to formaldehyde and methylal 失效
    将甲醇电化为甲醛和甲缩醛的方法

    公开(公告)号:US5223102A

    公开(公告)日:1993-06-29

    申请号:US847668

    申请日:1992-03-03

    IPC分类号: B01J19/24 C25B3/02

    摘要: Formaldehyde and/or methylal are made by the electrooxidation of methanol in an apparatus which is divided into the anode compartment and the cathode compartment by a cationic membrane made of a fluoropolymer and having pendant fluorosulfonyl or sulfonic acid groups, which is coated on one side with platinum applied by the impregnation-reduction method, said coating serving as the anode. The cathode may be a metal layer on the opposite side of the membrane or a separate metal cathode. When the separate metal cathode is employed, the cathode compartment contains a liquid electrolyte, which is a concentrated inorganic acid, preferably phosphoric acid. Within specifically identified temperature ranges, the yield of formaldehyde and of methylal can be optimized by controlling the mole fraction or partial pressure of methanol feed.

    摘要翻译: 甲醛和/或甲缩醛是通过在通过由含氟聚合物制成的阳离子膜和具有侧氟涂磺酸或磺酸基的阳离子膜分离成阳极室和阴极室的装置中通过甲醇的电氧化制备的, 通过浸渍还原法施加的铂,所述涂层用作阳极。 阴极可以是在膜的相对侧上的金属层或单独的金属阴极。 当使用单独的金属阴极时,阴极室包含液体电解质,其是浓缩无机酸,优选磷酸。 在特定的温度范围内,可以通过控制甲醇进料的摩尔分数或分压来优化甲醛和甲缩醛的产率。