Solvent extraction studies of nickel(II) by capric acid from sodium sulfate solution

被引：8

作者：

Benalia, H. ^{[1
]}

Barkat, D. ^{[1
]}

机构：

[1] Biskra Univ, Fac Sci & Technol, Dept Ind Chem, Lab Mol Chem & Environm, Biskra 07000, Algeria

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 2020年 / 207卷 / 03期

关键词：

Capric acid; complex; dinuclear; extraction; mononuclear; nickel(II); LIQUID-LIQUID-EXTRACTION; HEAVY-METAL IONS; CARBOXYLIC-ACIDS; INFRARED-SPECTROSCOPY; AQUEOUS-SOLUTION; EQUILIBRIUM; FE(III); NI(II); COPPER(II); COBALT(II);

D O I：

10.1080/00986445.2019.1588730

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The extraction of nickel(II) from sulfate medium of the ionic strength of 0.33 M by capric acid dissolved in chloroform has been carried out at 25 degrees C. The stoichiometry of the organometallic complexes extracted was given by using the slope analysis method. Nickel(II) complexes exist as mononuclear species NiL2.2HL and as dinuclear species (NiL2.2HL)(2) in low and high capric acid concentrations, respectively. Extraction constants for each species were determined. UV-visible and FT-IR spectroscopy have also been performed for the study of the ligand and their complexes. Electronic spectra of nickel(II) caprate species suggest the octahedral geometry. The present results have been compared with the previous results for the extraction of cobalt(II) and copper(II) and found that the extraction order for capric acid for the three metals is as follows: Cu > Ni > Co.

引用

页码：306 / 318

页数：13

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