Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1991-02-28
1992-12-29
Prescott, Arthur C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562608, C07C 5148, C07C121407
Patent
active
051753570
ABSTRACT:
A process for recovering acetic acid from an aqueous acetic acid solution comprises contacting the solution with a solvent comprising a diluent component and an extractant component. The extractant component is selected from the group consisting of di-2,4,4-trimethylpentyl-n-octyl phosphine oxide, tri-2,4,4-dimethylpenthyl phosphine oxide and mixtures thereof, and the diluent component comprises at least one high molecular weight ketone. This invention is useful in recovering acetic acid from both low concentration and concentrated aqueous acetic acid streams, and is particularly useful in recovering acetic acid from aqueous acetic acid waste streams in processes for the production of terephthalic acid and cellulose acetate.
REFERENCES:
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Prescott Arthur C.
The University of South Carolina
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