发明名称 |
METHOD FOR PRODUCING POLYSULFIDE BY USE OF ELECTROLYTIC OXIDATION |
摘要 |
<p>The present invention has an object to obtain a cooking liquor containing polysulfide-sulfur at a high concentration by minimizing by-production of thiosulfate ions. The present invention is a method for producing polysulfides, which comprises introducing a solution containing sulfide ions into an anode compartment of an electrolytic cell comprising the anode compartment provided with a porous anode, a cathode compartment provided with a cathode, and a diaphragm partitioning the anode compartment and the cathode compartment, for electrolytic oxidation to obtain polysulfide ions, characterized in that the porous anode is disposed so that a space is provided at least partly between the porous anode and the diaphragm, and the apparent volume of the porous anode is from 60% to 99% based on the volume of the anode compartment.</p> |
申请公布号 |
EP1178009(A1) |
申请公布日期 |
2002.02.06 |
申请号 |
EP20000905387 |
申请日期 |
2000.02.28 |
申请人 |
ASAHI GLASS COMPANY LTD.;KAWASAKI KASEI CHEMICALS LTD.;NIPPON PAPER INDUSTRIES CO., LTD. |
发明人 |
SHIMOHIRA, TETSUJI;ANDOH, TATSUYA;TANAKA, JUNJI;WATANABE, KEIGO;NANRI, YASUNORI |
分类号 |
C01B17/34;C25B1/00;C25B3/00;C25B11/03;D21C11/00;D21C11/04;(IPC1-7):C01B17/34 |
主分类号 |
C01B17/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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