PT-28对常见无机酸和有机酸的萃取行为研究

A Study on PT-28 Extracting Common Inorganicand Organic Acid

系统地研究了2-乙基己氧基甲基膦酸二（2-乙基己基）酯（代号PT28）对硫酸、磷酸、硝酸、高氯酸、盐酸和醋酸六种酸的萃取行为,发现PT-28对硫酸、磷酸、高氯酸和盐酸均不萃取,只对硝酸和醋酸萃取,这与中性磷氧萃取剂甲基膦酸二甲庚酯（P350）和磷酸三正丁酯（TBP）对强酸的萃取有显著的不同,并对其萃取机理进行了讨论。

The behaviors and mechanisms of 2-ethyl hexoxyyl methyl Phosphoric acid (2-ethylhexyl) ester (code name PT-28) extracting sulphuric acid, phosphoric acid, nitric acid, high chloric acid, hydrochloric acid and ethanoic acid were studied systematically in this paper. It was found that PT-28 can not extract H2SO4, H3PO4, HClO4, and HCl, but extract HNO3 and HAc, because PT-28 is very different from the other neutral phosphine oxygen extractant (P350 and TBP) in the aspect of extracting mineral acid, and its mechanism was discussed.