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Reaction Engineering for scale-up and design of oxygen diffusion electrode

氧扩散电极放大和设计的反应工程

基本信息

批准号：
08555187
负责人：
KODA Seiichiro
金额：
$ 9.15万
依托单位：
THE UNIVERSITY OF TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08555187/
关键词：
gas diffusion electrode oxygen gas anode chlorine-alkali electrolysis design of electrode scale-up of electrode AC impedance agglomerate model process-simulator 電極触媒過電圧解析アグロメレイドモデル

项目摘要

1.The aim of the present research is to solve problems relevant to the scale-up of oxygen diffusion electrode in chlorine-alkali electrolysis system. The items are ; (1) analysis of structure and characteristics of gas diffusion electrodes with catalysts, (2)solution of the problems relevant to the scale-up, and (3) the optimum design of the electrolysis cell and the process simulation.2.In the first subject (1), Sudoh analyzed the relationship, using the AC impedance method and so forth, between the characteristics of electrolysis and the composition of electrode such as content of PTFE and/or content of catalyst materials, etc. At the same time, the life of electrodes has been analyzed. In the second subject (2), Koda and Wang have succeeded in the modeling of the electrode structure for estimating the over-potential behavior against various structure parameters. They discussed the effect of the increased distribution of liquid pressure along the heigt, and also analyzed the over-potential of the electrode in terms of the thin-film and flooded-agglomerate model. In the third subject (3), Nagamoto and Kameyama studied the model electrolysis chamber and designed an appropriate simulator. Intending the practical application of the present gas diffusion electrodes, long-term operation tests have been performed, using from small-sized to middle-sized electrodes by Aikawa et al.. In conclusion, the gas diffusion electrodes technology is a very promising near-future technology.

1.本研究旨在解决氯碱电解系统中氧扩散电极的放大问题。这些项目是;（1）含催化剂气体扩散电极的结构和特性分析;（2）与放大有关的问题的解决;（3）电解槽的优化设计和过程模拟。2.在第一个主题（1）中，Sudoh使用交流阻抗法等分析了关系，研究了电解特性与电极组成（如PTFE含量、催化剂材料含量等）之间的关系，并对电极的寿命进行了分析。在第二个主题（2）中，Koda和Wang成功地对电极结构进行了建模，以估计相对于各种结构参数的过电位行为。他们讨论了液体压力沿着高度分布的增加的影响，并根据薄膜和聚集-聚集模型分析了电极的过电位。在第三个课题（3）中，Nagamoto和Kameyama研究了模型电解室并设计了适当的模拟器。为了实际应用本发明的气体扩散电极，Aikawa等人已经使用从小型到中型的电极进行了长期操作测试。总之，气体扩散电极技术是一种非常有前途的近期技术。