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Adsorption of 2,2′-bipyridyl onto sepiolite, attapulgite and smectite group clay minerals from anatolia: The FT-IR and FT-Raman spectra of surface and intercalated species.

Akyüz, Sevim and Akyüz, Tanil and Davies, J. Eric D. (1994) Adsorption of 2,2′-bipyridyl onto sepiolite, attapulgite and smectite group clay minerals from anatolia: The FT-IR and FT-Raman spectra of surface and intercalated species. Journal of Inclusion Phenomena and Macrocyclic Chemistry, 18 (2). pp. 123-135. ISSN 0923-0750

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Abstract

The adsorption of 2,2-bipyridyl by natural sepiolite, attapulgite, hectorite, saponite and natural and ion exchanged (Mn, Fe, Co, Ni, Cu, Zn or Sn) bentonites has been investigated by FT-IR and FT-Raman spectroscopy. Spectroscopic results indicate that most of the adsorbed molecules are coordinated to either exchangeable cations (in the case of smectite group clays) or Lewis acidic centres (in the case of sepiolite and attapulgite) as bidentate ligands. The formation of monoanionic surface species has also been detected, to a relatively small extent. No physisorbed surface species has been observed. XRD patterns and UV-visible spectra of the samples are also recorded for additional information.

Item Type: Article
Journal or Publication Title: Journal of Inclusion Phenomena and Macrocyclic Chemistry
Uncontrolled Keywords: FT-IR spectroscopy - FT-Raman spectroscopy - clays - sepiolite - attapulgite - hectorite - saponite - bentonite - adsorption - 2 ; 2-bipyridyl
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments:
ID Code: 22385
Deposited By: ep_ss_importer
Deposited On: 04 Feb 2009 13:32
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:00
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22385

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