title: A FT-IR absorption analysis of vibrational properties of water encaged in NaA zeolites: evidence of a "structure maker" role of zeolitic surface.
abstract: We performed, in the O-H stretching region, Fourier-transform Infrared (FT-IR) Absorption measurements for investigating the vibrational dynamics on water confined in NaA zeolite, vs. temperature and for different hydration percentages. The spectral substructure of the O-H stretching band is explained postulating the existence of three major components centred at approximately 3290 cm(-1) (omega(1)), approximately 3470 cm(-1) (omega(2)), approximately 3590 cm(-1) (omega(3)), with different dynamical properties traced over the full T-range investigated.
authors.affiliation: Physics Department & INFM, Messina University, C.da Papardo, S.ta Sperone 31, P.O. BOX 55, 98166 S. Agata, Messina, Italy.
authors.forename: V
authors.initials: V
authors.lastname: Crupi
authors.forename: D
authors.initials: D
authors.lastname: Majolino
authors.forename: P
authors.initials: P
authors.lastname: Migliardo
authors.forename: V
authors.initials: V
authors.lastname: Venuti
authors.forename: U
authors.initials: U
authors.lastname: Wanderlingh