Chemistry: electrical and wave energy – Processes and products
Patent
1991-02-25
1991-12-10
Niebling, John
Chemistry: electrical and wave energy
Processes and products
204 97, C25B 122
Patent
active
050715224
ABSTRACT:
A process for the preparation of chromic acid by the electrolysis of dichromate and/or monochromate solutions in electrolytic cells in which the anode chamber and the cathode chamber are separated by a cation exchanger membrane, the improvement wherein the chromic acid content of the solution in the anode chamber is periodically increased above that of a continuous operating state.
REFERENCES:
patent: 2099658 (1937-11-01), Pearson et al.
Ullmann's Encyclopedia of Industrial Chemistry, Fifth, Completely Revised Ed., vol. A7: Chlorophenols to Copper Compounds.
Block Hans-Dieter
Klotz Helmut
Lonhoff Norbert
Pinter Hans D.
Weber Rainer
Bayer Aktiengesellschaft
Gorgos Kathryn
Niebling John
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