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Shape-selective adsorption of aromatic molecules from water by tetramethylammonium-smectite

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases

By:
, , ,
DOI: 10.1039/F19898502953

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Abstract

The adsorption of aromatic compounds by smectite exchanged with tetramethylammonium (TMA) has been studied. Aromatic compounds adsorbed by TMA-smectite are assumed to adopt a tilted orientation in a face-to-face arrangment with the TMA tetrahedra. The sorptive characteristics of TMA-smectite were influenced strongly by the presence of water. The dry TMA-smectite showed little selectivity in the uptake of benzen, toluene and xylene. In the presence of water, TMA-smectite showed a high degree of selectivity based on molecular size/shape, resulting in high uptake of benzene and progressively lower uptake of larger aromatic molecules. This selectivity appeared to result from the shrinkage of interlamellar cavities by water.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Shape-selective adsorption of aromatic molecules from water by tetramethylammonium-smectite
Series title:
Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
DOI:
10.1039/F19898502953
Volume
85
Issue:
9
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2953
Last page:
2962
Number of Pages:
10