IONIC AND MOLECULAR-TRANSPORT IN HYDROPHOBIZED MONTMORILLONITE FILMS - AN ELECTROCHEMICAL SURVEY

Authors
Citation
P. Joo et A. Fitch, IONIC AND MOLECULAR-TRANSPORT IN HYDROPHOBIZED MONTMORILLONITE FILMS - AN ELECTROCHEMICAL SURVEY, Environmental science & technology, 30(9), 1996, pp. 2681-2686
Citations number
46
Categorie Soggetti
Environmental Sciences","Engineering, Environmental
ISSN journal
0013936X
Volume
30
Issue
9
Year of publication
1996
Pages
2681 - 2686
Database
ISI
SICI code
0013-936X(1996)30:9<2681:IAMIHM>2.0.ZU;2-M
Abstract
Clay-modified electrodes are used to investigate the swelling properti es of quaternary ammonium cation-modified Wyoming montmorillonite. Dis ruption of the structure of the clay was observed at modification rate s exceeding 37% of the available exchange sites. Signals for the trans port of an anionic pore sampler were attenuated in the presence of the QAC-modified clays. The electrochemistry of nitrobenzene proved the p resence of hydrophobic locations within the clay film. Nitrobenzene tr ansport was attenuated by the presence of the clay film but to a lesse r extent than the anion, suggesting sorption of the aromatic to the mo dified clay.