Separation of certain carboxylic acids utilizing cation exchange membranes
A method of substantially separating monofunctional lower carboxylic acids from a liquid mixture containing the acids wherein the pH of the mixture is adjusted to a value in the range of from about 1 to about 5 to form protonated acids. The mixture is heated to an elevated temperature not greater than about 100/sup 0/C and brought in contact with one side of a perfluorinated cation exchange membrane having sulfonate or carboxylate groups or mixtures thereof with the mixture containing the protonated acids. A pressure gradient can be established across the membrane with the mixture being under higher pressure, so that protonated monofunctional lower carboxylic acids pass through the membrane at a substantially faster rate than the remainder of the mixture thereby substantially separating the acids from the mixture.
- DOE Contract Number:
- AC02-77CH00178
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- Application Number:
- ON: DE84010961
- OSTI ID:
- 7119634
- Country of Publication:
- United States
- Language:
- English
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Separation of certain carboxylic acids utilizing cation exchange membranes
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250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
CARBOXYLIC ACIDS
DESIGN
DISPERSIONS
FILTERS
FLUIDS
LIQUIDS
MEMBRANES
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
SEPARATION PROCESSES