Abstract
An analytical method is described whereby the exchange of various organic cations for other organic cations on montmorillonite is determined. The exchange is followed by means of a Beckman DK-1 ultraviolet spectrometer.
It has been observed that organic cations from compounds such as primary, secondary, and tertiary amine salts and quaternary ammonium salts can be exchanged for one another on the natural cation exchange substance, montmorillonite. The exchange is carried out in isooctane to which a small amount of isopropyl alcohol has been added to aid in dispersion of the organic-clay complex. By choosing pairs of organic substances, of which one has strong absorbance in the ultraviolet and the other does not, the exchange can be followed quantitatively with the u.v. spectrometer.
Similar content being viewed by others
References
Cheng, J. L. and Bray, R. N. (1951) Determination of calcium and magnesium in soil and plant materials: Soil Sci., v. 72, pp. 449–459.
Grim, R. E. (1953) Clay Mineralogy: McGraw-Hill, New York, 384 pp.
McAtee, J. L., Jr. (1959) Inorganic—organic cation exchange on montmorillonite: Amer. Min., v. 44, pp. 1230–1236.
McAtee, J. L., Jr. (1962) Cation exchange of organic compounds on montmorillonite: Clays and Clay Minerals, v. 9, Pergamon Press, New York, pp. 440–450.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
McAtee, J.L. Organic Cation Exchange on Montmorillonite as Observed by Ultraviolet Analysis. Clays Clay Miner. 10, 153–162 (1961). https://doi.org/10.1346/CCMN.1961.0100113
Published:
Issue Date:
DOI: https://doi.org/10.1346/CCMN.1961.0100113