With time-resolved vibrational spectroscopy new information is obtained about the structural environment and vibrational dynamics of acidic hydroxyls in proton loaded zeolites. From O-H vibrational population lifetimes of zeolite Y we conclude that part of the protons are hydrogen bonded. Furthermore we find that the vibrational dynamics of the O-H oscillators are influenced by a resonant coupling mechanism.

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Journal Chem. Phys. Lett.
Brugmans, M. J. P, Kleyn, A.W, Lagendijk, A, Jacobs, W. P. J. H, & van Santen, R. A. (1994). Hydrogen bonding in acidic zeolites observed by time-resolved vibrational spectroscopy. Chem. Phys. Lett., 217, 117–122.