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Fourier transform Raman and fourier transform ir spectroscopic investigation of pyrazine adsorbed by sepiolite and bentonite from anatolia.

Akyu, Z. S. and Akuz, T. and Davies, J. E. D. and Esmer, K. and Ozel, A. E. (1995) Fourier transform Raman and fourier transform ir spectroscopic investigation of pyrazine adsorbed by sepiolite and bentonite from anatolia. Journal of Raman Spectroscopy, 26 (8-9). pp. 883-888.

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Abstract

The adsorption of pyrazine by two different Anatolian sepiolites and by natural and ion-exchanged (Fe, Co, Cu and Sn) bentonites was investigated by vibrational spectroscopy. The spectroscopic results indicate that the pyrazine molecules adsorbed on sepiolite and bentonites are coordinated to either surface hydroxyls by H-bonding interaction (in the case of sepiolite) or to exchangeable cations (in the case of bentonites) through both nitrogen lone pairs as bidentate ligands. X-ray diffraction patterns of the clays were also recorded and the basal spacings of pyrazine-treated natural and ion-exchanged bentonites were found to be around 14.7 Å. The results suggest that pyrazine molecules intercalate the interlayers of bentonite with a monolayer arrangement.

Item Type: Article
Journal or Publication Title: Journal of Raman Spectroscopy
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments:
ID Code: 22223
Deposited By: ep_ss_importer
Deposited On: 11 Feb 2009 15:15
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 15:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22223

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