发明名称 |
Process for the preparation of alkali metal dichromates and chromic acid by electrolysis |
摘要 |
A process for the preparation of alkali metal dichromates and/or chromic acid by electrolysis of alkali metal monochromate and/or alkali metal dichromate solution in electrolysis cells, the anode and cathode compartments of which are separated by cation exchange membranes, wherein the cation exchange membranes are single-layer membranes based on perfluorinated polymers having sulfonic acid groups as cation exchange groups, and an aqueous solution having a pH of 4 to 14 is produced in the cathode compartment of the cells.
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申请公布号 |
US5127999(A) |
申请公布日期 |
1992.07.07 |
申请号 |
US19910713625 |
申请日期 |
1991.06.10 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
KLOTZ, HELMUT;WEBER, RAINER;LOENHOFF, NORBERT;BLOCK, HANS-DIETER;PINTER, HANS D. |
分类号 |
C25B1/14;C01G37/14;C25B1/22;C25B1/28 |
主分类号 |
C25B1/14 |
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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