4—肉桂酰基—PMP的合成及其对铀的萃取行为研究

Synthesis and Characterization of 4—Cinnamoyl—pmp and the Extraction of U(Ⅳ) With the Compound

合成了PMBP的衍生物4—肉桂酰基PMP。分别制备了它的酮体和烯醇体。通过元素分析、IR、UV、HNMR等确定了它们的化学结构。测定和讨论了溶液中酮式和烯醇式互变异构现象,并和PMBP相对照考察了试剂的pK_a值和对铀酰离子的萃取行为,求出了萃合物的组成,萃取平衡常数lgK_(ex)和pH_(1/2)。

In this paper,the PMBP derivative 4—cinnamoyl—PMP has been synthesised.The ketone and Alkenol forms of the compound has been prepared by the method of solvent crystallization and characterized by ele-mental analys,IR,UV and'H NMR.The tautomerism of the compound in solution has been studied.The pKa value of compound has been determined.The extraction behavior of U(VI) with the compound has been investigated in con-trast to PMBP.The composition of the complex,the extraction equilibrium constant igKex and pH 1/2 have been ob-tained.