Preparation of alkali metal nitrates

Details Preparation of alkali metal nitrates Preparation of alkali metal nitrates

1988-08-25

1991-02-26

Tung, T.

Chemistry: electrical and wave energy

Processes and products

C25B 114

Patent

active

049959506

ABSTRACT:
Alkali metal nitrates are prepared by supplying the anode space of an electrolysis cell, separated from the cathode space by a perm-selective cation exchange membrane, with alkali metal chloride solution and at the same time supplying the cathode space with a nitric acid/alkali metal nitrate solution whose alkali metal nitrate concentration is not less than 10% by weight and whose HNO.sub.3 concentration is of from 0.1 to 10% by weight, and withdrawing from the cathode space a solution whose pH does not exceed 5.

REFERENCES:
patent: 3278403 (1966-10-01), Gardella et al.
patent: 4465568 (1984-08-01), Dotson et al.
patent: 4776930 (1988-10-01), Bianchi et al.
Japanese Patent Publication 1694/1969.
European Search Report.

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