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Interlayer adsorption of macrocyclic compounds (crown-ethers and cryptands) in 2:1 phyllosilicates: I. Isotherms and kinetics

Published online by Cambridge University Press:  09 July 2018

B. Casal  and
E. Ruiz-Hitzky
B. Casal
Affiliation:
Instituto de Fisico-Quimica Mineral, CSIC, Serrano, 115-dpdo, Madrid 6, Spain
E. Ruiz-Hitzky
Affiliation:
Instituto de Fisico-Quimica Mineral, CSIC, Serrano, 115-dpdo, Madrid 6, Spain
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Abstract

The intercalation process of crown-ethers and cryptands into Ba2+- and Na+-montmorillonites leads to H-type adsorption isotherms according to the Giles et al. classification. The experimental monolayer capacity shows that 1:1 or 2:1 macrocyclic ligand/interlayer cation complexes can be produced. Kinetic experiments at different temperatures indicate that the intercalation is diffusion-controlled. The activation energies deduced from Arrhenius plots are 25–38 kJ mol−1.

Type
Research Article
Information
Clay Minerals , Volume 21 , Issue 1 , March 1986 , pp. 1 - 7
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1986

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