Development of Multi-purpose Cell Using Ion Exchange Membrane Composite Electrodes for Electrorganic Synthesis

有机合成用离子交换膜复合电极多用途电池的开发

• 批准号: 61850147
• 负责人: TAKEHARA Zen-ichiro
• 金额: $ 6.4万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850147/
• 关键词: SPE; SPE Electrolyzer; Electro-organic Synthesis; Ion Exchange Membrane; 液流通型電解槽; プラズマ; 化学めっき

Nitrobenzene was reduced to aniline using Cu, Pt-Nafion. Aniline was obtained at current efficiencies higher than 95% with no dimerized by-product detected. A batch type electrolyzer was constructed and tested in the reductionn of nitrobenzene. The current efficiency was 60% at high nitrobenzene conversion. This lowering was ascribed to the permeation of product through the SPE material (Nafion).Hydrocarbon type cation exchange membranes also were examined for use as SPE materials. The permeation of aniline through Selemion was only about 1/3 of that through Nafion. Using selemion, some dimerized products were formed, because of its lower acidity than Nafion. Nafion coating on Cu-Selemion enhanced the current efficiency for aniline production and inhibited the production of by-product.Oxygen plasma treatment of the Nafion surface decreased the aniline permeation at the cost of an increase in the internal resistance of the cell.Flow-through electrolyzers were constructed and examined nitrobenzene reduction. With a 1-stack cell the current efficiency for aniline production was 75-80%. With a 2-stacks cell the efficiency decreased by about 5%.

用Cu， Pt-Nafion还原硝基苯为苯胺。苯胺的电流效率高于95%，没有检测到二聚副产物。建立了间歇式电解槽，并进行了硝基苯还原试验。在高硝基苯转化率下，电流效率为60%。这种降低归因于产品通过SPE材料（Nafion）的渗透。考察了碳氢型阳离子交换膜作为固相萃取材料的性能。苯胺通过Selemion的渗透率仅为通过Nafion的1/3左右。由于它的酸度比萘芬酸低，在选择时形成了一些二聚产物。cu - selion涂层提高了苯胺生产的电流效率，抑制了副产物的产生。氧等离子体处理钠离子表面降低了苯胺的渗透，代价是增加了细胞的内阻。建立了流动式电解槽，并对硝基苯还原进行了研究。对于1层电池，苯胺生产的当前效率为75-80%。使用2层电池时，效率降低了约5%。

项目成果

Zen-ichiro, Takehara; Zempachi, Ogumi: "Reaction Profiles of an Iron Redox Couple Incorporated into Nafion with Ascorbic Acid" Bulletin of the Chemical Society of Japan. 61. 4183-4187 (1988)

竹原善一郎；

Z.Ogumi;T.Mizoe;N.Yoshida;Z.Takehara: Journal of Applied Electrochemistry.

Z.Ogumi；T.Mizoe；N.Yoshida；Z.Takehara：应用电化学杂志。

Zen-ichiro Takehara;Zempachi Ogumi: Electrochimica Acta. 33. 365-369 (1988)

Zen-ichiro Takehara；Zempachi Ogumi：电化学学报。

Z.Ogumi;M.Inaba;S.Ohhashi;Z.Takehara: Electrochimica Acta.

Z.Ogumi；M.Inaba；S.Ohhashi；Z.Takehara：电化学学报。

Zen-ichiro Takehara;Zempachi Ogumi: Bulletin of the Chemical Society of Japan. 61. 4183-4187 (1988)

Zen-ichiro Takehara；Zempachi Ogumi：日本化学会通报。