Catalytic decomposition of sodium hypochlorite in highly alkalin

Details Catalytic decomposition of sodium hypochlorite in highly alkalin Catalytic decomposition of sodium hypochlorite in highly alkalin

1986-06-26

1988-08-16

Cintins, Ivars

Liquid purification or separation

Processes

Chemical treatment

210763, 210766, C02F 170, C02F 172

Patent

active

047642866

ABSTRACT:
The present invention relates to a method of catalytically decomposing sodium hypochlorite in an aqueous alkaline solution to oxygen and chloride ion. Specifically, the present invention discloses a method of decomposing aqueous hypochlorite into oxygen and chloride in a solution having a pH value greater than 13 using a solid catalyst comprising nickel oxide, cobalt oxide or mixtures thereof on an inorganic support selected from magnesium oxide or titanium oxide. The resulting sodium chloride solution may be recovered and used further.

REFERENCES:
patent: 3965249 (1976-06-01), Kinosz
patent: 4073873 (1978-02-01), Caldwell et al.
patent: 4297333 (1981-10-01), Crawford et al.
patent: 4400304 (1983-08-01), Clark et al.
V. S. Landbe et al., "A Note on the Catalytic Decomposition of Waste Sodium Hypochlorite Solution," Water Research, vol. 9, pp. 1009-1010, Pergammon Press (1975).

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