S. Akyuz et al., FT-IR and FT-Raman spectroscopic study of surface species of 2-aminopyridine adsorbed by sepiolite from Anatolia, J STRUCT CH, 40(5), 1999, pp. 796-801
The absorption of 2-aminopyridine by Anatolian sepiolite was investigated b
y Fourier-transform infrared and Fourier-transform Raman spectroscopy. The
spectroscopic results indicate that 2-aminopyridine molecules adsorbed on s
epiolite are coordinated to Lewis acidic centers or surface hydroxyls by H-
bonding interaction through the pyridine ring nitrogen lone pairs. No physi
cal sorbed species has been detected. Monocationic surface species has not
been detected under the conditions applied. It must be noted that the adsor
ption of aminopyridine affected the hydroxyl group vibrations of sepiolite.