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    • 3. 发明授权
    • Electrolysis cell and method for electrolytic production of hydrogen
    • 电解槽和氢电解生产方法
    • US4330378A
    • 1982-05-18
    • US208933
    • 1980-11-21
    • Dagmar BoltersdorfRobert JungingerBernd D. StruckHerbert Neumeister
    • Dagmar BoltersdorfRobert JungingerBernd D. StruckHerbert Neumeister
    • C25B1/02C25B1/22C25B9/00C25B9/08
    • C25B9/08C25B1/02C25B1/22
    • The production of hydrogen by electrolysis in a cell, in which the anode electrolyte contains sulfur dioxide as well as sulfuric acid and an intermediate chamber separated from the anode and cathode chambers by cation-exchanger membranes is provided through which an electrolyte flows in order to prevent sulfur dioxide from reaching the cathode chamber is greatly improved by using as the anode side membrane a cation-exchanger in which a polyvinyl chloride skeleton is combined with a polymer of styrol and divinyl benzol to which sulfonic acid groups have been attached, such a membrane having a very low resistivity, thus reducing the necessary electrolysis voltage. Such a membrane also loses conductivity with increasing sulfuric acid concentration at a lower rate than membranes previously used in such an electrolysis process and permits a higher sulfuric acid concentration in the anode electrolyte. The improvement on the anode side makes possible the operation of the cathode at low sulfuric acid electrolyte concentration, below 20 or even 10% by weight. Through-flow electrodes of porous graphite encased except on the membrane side by impermeable graphite further improve the operation of the process, especially if they fill the electrolyte chamber right up to the membrane.
    • 通过在电池中电解生产氢,其中阳极电解质含有二氧化硫以及硫酸,以及通过阳离子交换膜从阳极室和阴极室分离的中间室,通过电解液流过以防止 通过将聚氯乙烯骨架与其中已经连接有磺酸基团的苯乙烯和二乙烯基苯酚的聚合物组合的阳离子交换剂用作阳极侧膜,可以大大改善到达阴极室的二氧化硫,这样的膜具有 电阻率非常低,从而减少必要的电解电压。 这样的膜也会随着硫酸浓度的增加而以比先前在这种电解方法中使用的膜低的速率降低导电性并允许阳极电解质中的较高的硫酸浓度。 在阳极侧的改进使阴极在低硫酸电解质浓度下的操作成为可能,低于20甚至10重量%。 通过不渗透石墨在膜侧除外的多孔石墨的通流电极进一步改善了该方法的操作,特别是如果它们将电解液室填充到膜上。