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Pair Distribution Function as a Probe for Zeolite Structures

Published online by Cambridge University Press:  01 February 2011

María M. Martínez-Iñesta  and
Raúl F. Lobo
María M. Martínez-Iñesta
Affiliation:
Center for Catalytic Science and Technology, Department of Chemical Engineering University of Delaware Newark, DE 19716, USA
Raúl F. Lobo
Affiliation:
Center for Catalytic Science and Technology, Department of Chemical Engineering University of Delaware Newark, DE 19716, USA
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Abstract

In this article we describe how we have used the pair distribution function of zeolites to solve complex structural problems. A first study was dedicated to refining the structure of disordered zeolite beta, a zeolite that is used in the alkylation of benzene. A second study is a work in progress geared toward the determination of the mechanism of negative thermal expansion of zeolite chabazite, which has been found to be one of the most contracting materials known. Preliminary results suggest that the individual Si-Ox distances and Ox-Si-Ox angles in the tetrahedral are deformed with temperature while the average tetrahedra dimensions stay constant.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 840: Symposium Q – Neutron and X-Ray Scattering as Probes of Multiscale Phenomena , 2004 , Q1.4
Copyright
Copyright © Materials Research Society 2004

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References

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