Research output: Contribution to Journal/Magazine › Journal article › peer-review
A vibrational spectroscopic study of the adsorption of 4,4′-bipyridyl by sepiolite and smectite group clay minerals from Anatolia (Turkey). / Akyüz, Sevim; Akyüz, Tanil; Davies, J. Eric D.
In: Journal of Inclusion Phenomena and Macrocyclic Chemistry, Vol. 15, No. 2, 1993, p. 105-119.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - A vibrational spectroscopic study of the adsorption of 4,4′-bipyridyl by sepiolite and smectite group clay minerals from Anatolia (Turkey).
AU - Akyüz, Sevim
AU - Akyüz, Tanil
AU - Davies, J. Eric D.
PY - 1993
Y1 - 1993
N2 - The adsorption of 4,4-bipyridyl by natural sepiolite and smectite group clay minerals (bentonite, hectorite and saponite) from Anatolia (Turkey) has been studied using vibrational spectroscopy. Investigation of Fourier-transform infrared and Fourier-transform Raman spectra of adsorbed 4,4-bipyridyl indicate the presence of chemisorbed species. However, any evidence for the generation of anionic species on the surface of the phyllosilicates has not been detected. It is proposed that the adsorbed bipyridyl molecules on sepiolite are centrosymmetric and H-bonded to the surface hydroxyls through both the nitrogen lone pairs as bidentate ligands. The adsorbed bipyridyl molecules on the smectite group clays are coordinated to exchangeable cations both directly and also indirectly through water as monodentate ligands. XRD patterns of the clays studied are also recorded.
AB - The adsorption of 4,4-bipyridyl by natural sepiolite and smectite group clay minerals (bentonite, hectorite and saponite) from Anatolia (Turkey) has been studied using vibrational spectroscopy. Investigation of Fourier-transform infrared and Fourier-transform Raman spectra of adsorbed 4,4-bipyridyl indicate the presence of chemisorbed species. However, any evidence for the generation of anionic species on the surface of the phyllosilicates has not been detected. It is proposed that the adsorbed bipyridyl molecules on sepiolite are centrosymmetric and H-bonded to the surface hydroxyls through both the nitrogen lone pairs as bidentate ligands. The adsorbed bipyridyl molecules on the smectite group clays are coordinated to exchangeable cations both directly and also indirectly through water as monodentate ligands. XRD patterns of the clays studied are also recorded.
KW - FT-IR spectroscopy - FT-Raman spectroscopy - clays - sepiolite - bentonite - hectorite - saponite - 4
KW - 4-bipyridyl - adsorption - XRD
U2 - 10.1007/BF00710220
DO - 10.1007/BF00710220
M3 - Journal article
VL - 15
SP - 105
EP - 119
JO - Journal of Inclusion Phenomena and Macrocyclic Chemistry
JF - Journal of Inclusion Phenomena and Macrocyclic Chemistry
SN - 0923-0750
IS - 2
ER -