Extractive purification of carboxylic acids containing monovalen

Details Extractive purification of carboxylic acids containing monovalen Extractive purification of carboxylic acids containing monovalen

1978-04-14

1979-10-02

Padgett, Benjamin R.

Compositions

Oxidative bleachant, oxidant containing, or generative

Contains organic peroxide

423111, 423495, C01F 1500, C07F 500

Patent

active

041698096

ABSTRACT:
A process is provided for extracting monovalent thallium and alkali metal values from a liquid medium containing a carboxylic acid having limited solubility in water and containing dissolved trivalent thallium values, monovalent thallium values and, optionally, alkali metal compound, which comprises contacting the carboxylic acid medium with an extractant comprising an acidic aqueous medium having a pH of not greater than about 6 to preferentially extract monovalent thallium and alkali metal values into the aqueous medium, and recovering a raffinate comprising a treated carboxylic acid medium containing trivalent thallium carboxylate and depleted of monovalent thallium and alkali metal values.

REFERENCES:
patent: 4113756 (1976-11-01), Johnson
patent: 4115420 (1977-04-01), Brill

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