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

The extraction of cobalt(II) from sulfate medium of ionic strength 0.33 mol dm −3 by capric acid dissolved in chloroform has been carried out at 25°C. By using the slope analysis method, the stoichiometry of the organometallic complex extracted was determined. Cobalt(II) complex exists as a mononucl...

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Bibliographic Details
Published inJournal of dispersion science and technology Vol. 38; no. 9; pp. 1247 - 1251
Main Authors Benalia, Houria, Barkat, Djamel
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 02.09.2017
Taylor & Francis Ltd
Subjects
Binuclear
capric acid
Chloroform
Cobalt
cobalt(II)
complex
Electronics
Fourier transforms
Infrared spectroscopy
Metalorganic compounds
mononuclear
Slopes
Solvent extraction
Solvents
Spectroscopy
Stoichiometry
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Summary:The extraction of cobalt(II) from sulfate medium of ionic strength 0.33 mol dm −3 by capric acid dissolved in chloroform has been carried out at 25°C. By using the slope analysis method, the stoichiometry of the organometallic complex extracted was determined. Cobalt(II) complex exists as a mononuclear species CoL 2 .2HL in the lower concentration region of capric acid and a binuclear ones (CoL 2 .2HL) 2 in the higher concentration region. Extraction constants for each species were given. UV-visible and FTIR spectroscopy have also been used for the investigation of the extractant and their complexes. Electronic spectrum of cobalt(II) caprate species indicates the octahedral structure.
Bibliography:ObjectType-Article-1
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ISSN:0193-2691
1532-2351
DOI:10.1080/01932691.2016.1230864