Equilibria and speciation in the solvent extraction of lithium chloride by nonamethyl-14-crown-4 ether in 1-octanol

被引：12

作者：

Sun, YF ^{[1
]}

Chen, ZH ^{[1
]}

Cavenaugh, KL ^{[1
]}

Sachleben, RA ^{[1
]}

Moyer, BA ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB, DIV CHEM & ANALYT SCI, OAK RIDGE, TN 37831 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 22期

关键词：

D O I：

10.1021/jp9533537

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The equilibria and speciation in the solvent extraction of LiCl by nonamethyl-14-crown-4 ether in 1-octanol have been determined by use of ion chromatography (IC) and inductively coupled plasma (ICP) analyses, equilibrium modeling with the program SXLSQI, and Li-7 NMR measurements, SXLSQI modeling of the extraction data indicates the formation of a 1:1 metal:crown complex in the organic phase, The complex apparently exists as an ion-pair Li(crown)Cl, which partially dissociates to the complex cation Li(crown)(+) and free chloride anion Cl-. Extraction of LiCl by 1-octanol to give the organic-phase ion-pair LiCl and its dissociated ions Li+ and Cl- must be included in the data analysis. Li-7 NMR measurements verify the existence of free and crown-complexed lithium species in 1-octanol, and the measurements quantitatively agree with results from the SXLSQI model.

引用

页码：9500 / 9505

页数：6

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