Method for preparing cupric ion-free cuprous chloride

Details Method for preparing cupric ion-free cuprous chloride Method for preparing cupric ion-free cuprous chloride

1984-12-24

1986-04-15

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204277, 423493, C25B 126

Patent

active

045825793

ABSTRACT:
An improvement of the method for preparing cupric ion-free cuprous chloride powder in which copper metal is added to a highly acidified solution of cupric chloride to reduce the cupric ions to cuprous ions and oxidize the copper metal to cuprous ions. The improvement involves applying an electromotive force to the solution by immersing interconnected copper and platinum electrodes in the solution. The electromotive force is applied only after the reduction of cupric ions is near completion. The electromotive force is applied for a sufficient time to insure essentially complete reduction of cupric ions in the solution. Cuprous chloride is then separated from the cupric ion-free solution by evaporation and isolated by conventional techniques to provide an improved cuprous chloride powder product which is essentially free of cupric ions. The electromotive force is also applied during the evaporation of the acidified solution to prevent possible cupric ion formation. Removal of anion impurities from the cupric ion-free cuprous chloride powder is also disclosed.

REFERENCES:
patent: 829778 (1906-08-01), Granier
patent: 1964569 (1934-06-01), Gernes
patent: 2049402 (1936-07-01), Wernlund
patent: 2468766 (1949-05-01), Low
patent: 3129152 (1964-04-01), Teske et al.

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