Publication: Adsorption of Isonicotinamide on Loughlinite (Natural Na-Sepiolite): An FT-IR Spectroscopic Study
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Date
2014-07
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Asian Journal Of Chemistry, 11/100 Rajendra Nagar, Sector 3, Sahibabad 201 005, Ghaziabad, India
Abstract
In this study adsorption of isonicotinamide on loughlinite (Na-sepiolite) has been investigated by FT-IR spectroscopy. The adsorption of isonicotinamide showed a considerable alteration on both Si-OH stretching and deformation peaks of loughlinite structure. Spectroscopic results indicate that adsorbed isonicotinamide molecules onto loughlinite are coordinated to surface silanol groups and/or Lewis acidic centers by H-bonding interaction through pyridine ring nitrogen lone pairs. The amino nitrogen is found to be relatively in active to adsorbing sites.
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Keywords
Adsorption, Clays, IR spectroscopy, Isonicotinamide, Loughlinite, Sepiolite, Halide-Complexes, Montmorillonite, Picolinamide, Nicotinamide, Intercalation, Anatolia