Adsorption and Kinetic Studies of the Intercalation of Some Organic Compounds onto Na+-Montmorillonite

The adsorption and the kinetics of the intercalation of metanil yellow dye, p-aminodiphenylamine (p-NH2-DPA), and benzidine by colloidally dispersed Na+-montmorillonte (Na+-MMT) have been studied. The adsorption isotherm parameters confirmed the occurrence of chemical adsorption that is based on the...

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Bibliographic Details
Published in:Journal of colloid and interface science 2002-01, Vol.245 (1), p.116-125
Main Authors: Gemeay, A.H., El-Sherbiny, A.S., Zaki, A.B.
Format: Article
Language:English
Subjects:
adsorption
aromatic amines
Chemistry
diffusion coefficient
Exact sciences and technology
General and physical chemistry
intercalation
kinetics
metanil yellow
Solid-liquid interface
stopped-flow
Surface physical chemistry
thermodynamics
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Summary:The adsorption and the kinetics of the intercalation of metanil yellow dye, p-aminodiphenylamine (p-NH2-DPA), and benzidine by colloidally dispersed Na+-montmorillonte (Na+-MMT) have been studied. The adsorption isotherm parameters confirmed the occurrence of chemical adsorption that is based on the cation-exchange process. The selectivity of these compounds toward Na+-MMT follows the order metanil yellowbenzidine. The rate of oxidation has been quantitatively measured using a stopped-flow spectrophotometer. The rate constant follows the order benzidine
ISSN:0021-9797
1095-7103
DOI:10.1006/jcis.2001.7989