首页>
外国专利>
Separation of certain carboxylic acids utilizing cation exchange membranes
Separation of certain carboxylic acids utilizing cation exchange membranes
展开▼
机译:利用阳离子交换膜分离某些羧酸
展开▼
页面导航
摘要
著录项
相似文献
摘要
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° 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.
展开▼