Publication Type Journal Article
Title Apparent Molar Volumes of N,N Disubstituted Monoamides: A Convenient Tool to Interpret Iron(Iii) Extraction Profiles from Hydrochloric Acid Solutions
Authors Lilia C. Ribeiro M. Soledade C. S. Santos A. P. P. Paiva
Groups MET
Journal SOLVENT EXTRACTION AND ION EXCHANGE
Year 2013
Month May
Volume 31
Number 3
Pages 281-296
Abstract New iron(III) extraction data involving two N,N-disubstituted monoamides, N-ethyl-N-phenyloctanamide (EPHOA) and N-ethyl-N-cyclohexyloctanamide (ECHOA), from hydrochloric acid media, are presented and discussed. These, and earlier results obtained with other similar N,N-disubstituted monoamides, are interpreted in this work through their apparent molar volumes in 1,2-dichloroethane, and all the information is being used to screen for solute-solute and solute-diluent interactions. The results collected help to understand why N-cyclohexyl monoamides are generally more efficient than their N-phenyl analogues as liquid-liquid extractants for iron(III) from 3 to 5 M hydrochloric acid solutions, and clearly denote that N-phenyl monoamides are essentially monomeric whereas N-cyclohexyl monoamide derivatives have a tendency to aggregate in the organic solution.
DOI http://dx.doi.org/10.1080/07366299.2013.764784
ISBN
Publisher
Book Title
ISSN 0736-6299
EISSN
Conference Name
Bibtex ID ISI:000317295100005
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