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Some Examples of Temperature and Time Resolved Studies of the Dehydration and Hydration Behavior of Zeolites and Clathrates
Author(s) -
Depmeier Wulf
Publication year - 2009
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200800012
Subject(s) - microporous material , dehydration , powder diffraction , diffraction , chemistry , crystallography , chemical engineering , organic chemistry , physics , optics , biochemistry , engineering
The prominent role of X‐ray powder diffraction (XRPD) for the study of the dehydration and hydration behavior of microporous zeolites and clathrates can be documented by several typical examples taken from the literature. The importance of various interactions, in particular water‐framework, water‐extra‐framework cations, framework‐extra‐framework cations, and water‐water is discussed. However, it is emphasized that XRPD has its limitations, especially when species are disordered, and should be complemented as far as possible by the determination of bulk properties, and also by various appropriate spectroscopic methods.