A process for the extraction of dilute amounts of carboxylic acids, particularly acetic acid, from liquid solutions involving contacting the acid containing solution in an acid extraction zone with an insoluble extractive support, which is preferably a crosslinked polystyrene resin, derivitised with a suitable amount of either trihydrocarbyl phosphine oxide or heterocyclic amine absorption sites.
一种从液态溶液中萃取稀释
羧酸,特别是
醋酸的工艺,包括在酸萃取区将含酸溶液与不溶性萃取支撑物接触,支撑物最好是交联聚
苯乙烯树脂,并衍生有适量的三氢羰基氧化膦或杂环胺吸收位点。