Abstract
Zeolites are crystalline and, therefore, diffraction methods are central to attempts at atomiclevel structural characterization. This overview outlines key issues of diffraction from a materials perspective and describes the various problems that zeolite materials present to the diffractionist. As a result of these challenging problems, zeolite systems often provide the incentive for diffraction technique developments, or rank high amongst the materials to which developing methods are first applied. Recent applications of diffraction techniques, particularly X-ray and neutron diffraction, to zeolite structural problems are summarized. Principal advances stem from further use of powder neutron diffraction (PND) and, particularly, exploitation of the properties of synchrotron X-radiation in both powder and single crystal diffraction experiments. In parallel, there have been continuous improvements in data analysis methods, notably in programs for Rietveld analyses of powder diffraction data. Computer simulations are also playing an increasing role in structural characterization, exemplified by the use of simulated annealing as a new approach to initial structure solutions.
Published Version
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