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Studies on Ion-exchange Resins. XIII. Selectivity Coefficients of Quaternary Base Anion-exchange Resins Toward Univalent Anions

Gregor, Harry P. and Belle, Jack and Marcus, R. A. (1955) Studies on Ion-exchange Resins. XIII. Selectivity Coefficients of Quaternary Base Anion-exchange Resins Toward Univalent Anions. Journal of the American Chemical Society, 77 (10). pp. 2713-2719. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20150424-092734637

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Abstract

Selectivity coefficients of a quaternary base ammonium anion-exchange resin toward a number of univalent anions have been measured. In some systems the selectivity coefficients varied little with composition, while in others a marked dependence was observed. Examples of the former included systems made up of various pairs of ions from Group A-halide, acetate, iodate and nitrate, or of pairs of ions from Group B-thiocyanate, perchlorate, di- and trichlolroacetate, trifluoroacetate, toluenesulfonate and naphthalenesulfonate. Examples of systems where the selectivity coefficient changed markedly were made up of an anion from Group A with one from Group B. These data were interpreted in terms of two postulated types of specific interactions (ion-pair formation) of these ions with those of the resin matrix. The ion-pairs of Group A were assumed to be randomly distributed in the resin phase, while those of Group B were assumed to occur in the form of “patches,” i.e., form clusters. The effect of temperature on the distribution coefficient was small; the concentration of the solution (when dilute) had a negligible effect upon the selectivity.


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http://dx.doi.org/10.1021/ja01615a011DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja01615a011PublisherArticle
Additional Information:© 1955 American Chemical Society. Received November 11, 1954. The authors wish to thank the Signal Corps, U. S. Army, and the Office of Naval Research for the support given this work. One of them (H.P.G.) expresses thanks to Dr. K. Fajans for his illuminating comments.
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U. S. Army, Signal CorpsUNSPECIFIED
Office of Naval Research (ONR)UNSPECIFIED
Record Number:CaltechAUTHORS:20150424-092734637
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150424-092734637
Official Citation:Studies on Ion-exchange Resins. XIII. Selectivity Coefficients of Quaternary Base Anion-exchange Resins Toward Univalent Anions Harry P. Gregor, Jack Belle, and R. A. Marcus Journal of the American Chemical Society 1955 77 (10), 2713-2719 DOI: 10.1021/ja01615a011
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56946
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:24 Apr 2015 16:45
Last Modified:13 Feb 2019 18:03

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