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Identification of Tetramethylammonium Ion in Methylated NH4-Bentonite

Published online by Cambridge University Press:  01 July 2024

M. A. Franco ,
C. Gessa  and
F. Cariati
M. A. Franco
Affiliation:
Istituto di Chimica Analitica, Università di Sassari.
C. Gessa
Affiliation:
Istituto di Chimica Agraria, Università di Sassari.
F. Cariati
Affiliation:
Istituto di Chimica Inorganica, Università di Sassari.
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Abstract

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Treating NH4-bentonite with diazomethane results in methylation of adsorbed ammonium with the formation of the tetramethylammonium ion. This ion, which can be completely removed through ion exchange, is distinguished in the IR spectrum by a strong band at 1480 cm−1 due to CH3 group bending vibrations. X-ray diffractograms, CEC, and surface area of the clay are not modified by treatment with diazomethane.

Резюме

Резюме

Обработка бентонита,содержащего H4, диазометаном определяет метили- зацию адсорбированного аммония с образованием иона тетраметиламмония.Этот ион,который может быть полностью удален путем ионного обмена,определяется в инфракрасном спектре интенсивной полосой на 1480 см-1 благодаря искривляющим колебаниям группы СН3.

Дифрактограммы рентгеновских лучей,катионная обменная способность и площадь поверхности глины не изменились в результате обработки ее диазометаном.

Keywords

BentoniteDiazomethaneExchangeMontmorilloniteTetramethylammonium
Type
Research Article
Information
Clays and Clay Minerals , Volume 26 , Issue 1 , February 1978 , pp. 73 - 75
Copyright
Copyright © 1978, The Clay Minerals Society

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