Process for oxidizing multivalent metals

Details Process for oxidizing multivalent metals Process for oxidizing multivalent metals

1987-01-12

1989-12-26

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423224, 423226, 423233, 4235731, 4235765, 4235766, 423DIG9, B01D 5318, B01D 5334, C01B 1705

Patent

active

048897019

ABSTRACT:
A process for oxidizing a metal from a lower valence state to a higher valence state comprises contacting the metal, usually contained in a solution, with a sufficient amount of an oxygen-containing gas to provide at least about 300% excess of stoichiometric oxygen with respect to the metal at the lower valence state. The metals are preferably used as chelated solutions thereof. Some of the representative metals are iron, copper, manganese, lead or mercury.

REFERENCES:
patent: 4009251 (1977-02-01), Meuly
patent: 4283379 (1981-08-01), Fenton et al.
patent: 4388293 (1983-06-01), Diaz
patent: 4499059 (1985-02-01), Jones et al.
patent: 4649032 (1987-03-01), Snavely, Jr. et al.
patent: 4774071 (1988-09-01), Jeffrey et al.
U.S. application No. 614,009, 6/10/87, Jones et al.
U.S. application No. 614,010, 5/25/84, Jones et al.

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