多元协同萃取的研究(Ⅱ)——ABB类三元体系对Nd(Ⅲ)的协同萃取  

Studies of Polynary System Synergistic Extraction (Ⅱ) Synergistic Extraction of Neodymium (Ⅲ) by the Ternary System of ABB Species

作　　者：赵弘颖 陈金榜[2] 施汝谷 

机构地区：[1]北京林业大学基础部 [2]北京大学技术物理系 [3]北京师范学院化学系

出　　处：《北京林业大学学报》1989年第2期86-91,共6页Journal of Beijing Forestry University

摘　　要：本文用单浓度递变斜率法研究了两组酸性螫合—中性络合—中性络合三元体系对Nd(Ⅲ)的协同萃取机理,分别测定了Nd^(3+)(≤10^(-4)M)/NaClO_4,HClO_4(μ=0.1)/PMHP-D;AMP-DASO-C_6H_5CH_3体系的协萃物组成为NdA_3BS,协萃平衡常数K_(ABS)=0.50。用同样的方法,测定了Nd^(3+)(≤10^(-4)M)/NaClO_4,HClO_4(μ=0.1)/TTA-D;AMP-DASO-C_6H_5CH_3体系的协萃物组成为NdT_3BS,协萃平衡常数为K_(TBS)=2.4,并对结果进行了比较和讨论,结果表明:配位体的空间位阻效应对同类协萃物的稳定性影响很大,也是导致K_(TBS)>K_(ABS)结果的主要原因。The synergistic extractions of neodymium(Ⅲ) from sodium pe-rchlorate solution with two ternary systems of ABB species were studied by slop analysis. Ternary synergistic adduct complexes and equilibrium constants were determined to be NdA3BS, KABS=0.50 (25℃) (in Nd3+(≤10-4 M)/NaClO4, HClO4 (μ= 0. 1) /PMHP-D1AMP-DASO-C6H5CH3 system) and NdT3BS,KTBS=2.4 (25℃) (in Nd3+(≤0-4M)/NaClO, HClO4 (μ=0.1)/ TTA-D1AMP-DASO-C6H5CH3 system). The results of two ternary synergistic systems were compared and discussed.

关 键 词：多元协同萃取 钕 ABB类三元体系 Nd(Ⅲ)1-苯基-3-甲基-4-已酰基吡唑啉酮-5 

分 类 号：O614.335[理学—无机化学]