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Structural Characterization Of Zeolites Using Raman Scattering

Published online by Cambridge University Press:  15 February 2011

H. W. Deckman,
J. A. Creighton,
R. G. Buckley and
J. M. Newsam
H. W. Deckman
Affiliation:
Corporate Research, Exxon Research And Engineering Co., Annandale, NJ
J. A. Creighton
Affiliation:
University Of Kent, Canterbury, U.K.
R. G. Buckley
Affiliation:
Department Of Scientific And Industrial Research, New Zealand
J. M. Newsam
Affiliation:
BIOSYM Technologies, San Diego, CA
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Abstract

We show that the frequencies of certain optically active lattice vibrational modes in a large number of zeolites can be used as direct structural probes. Mode frequencies are found to depend on the cosine of the T-O-T angle and the Si/Al ratio of the framework. The relationship between mode frequency and local framework structure is discussed in terms of a complete lattice dynamics calculation for specific zeolite structures as well as a lattice dynamical model of amorphous glasses.

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References

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