In:
Advances in X-ray Analysis, Cambridge University Press (CUP), Vol. 36 ( 1992), p. 439-449
Abstract:
Humidity sensitive mineral phases change their structure when humidity varies resulting in X-ray pattern changes in intensity, position, and shape of lines. These structural changes in hydrous minerals are induced by dehydration and rehydration, which can lead to phase transformations or to steady depletion which may result in a total structure collapse. By means of X-ray diffraction with a special attachment, such reactions can be followed. The controlled relative humidity is provided in situ , in a closed cell, by a flow of moistened helium gas which is flushed through the cell during the XRD analysis. Humidity diffractometry allows studies of reaction rates of dehydration-rehydration reactions and their reversibilities, as well as effects of additives and impurities on these reactions. Potential applications in basic research and in industry are demonstrated using montmorilionite, ettringites, sodium carbonates and calcium sulfates.
Type of Medium:
Online Resource
ISSN:
0376-0308
,
2631-3626
DOI:
10.1154/S0376030800019066
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
1992
detail.hit.zdb_id:
2498440-1
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