Title
Water Transport in MgSO4·7H2O during Dehydration in View of Thermal Storage
Author
Donkers, P.A.J.
Beckert, S.
Pel, L.
Stallmach, F.
Steiger, M.
Adan, O.C.G.
Publication year
2015
Abstract
The water phases in a MgSO4·7H2O crystal during heating were studied with the help of NMR. The thermogravimetric analysis (TGA) data showed that the heating rate has a strong effect on the dehydration process. NMR experiments showed that pore water, i.e., an aqueous solution of MgSO4, was produced during dehydration. Additional NMR measurements indicate a water diffusion coefficient of this pore water that is 10 times lower than that of bulk water. We showed on the basis of a model that pore water is produced as the vapor release is not sufficient at crossing a phase transition temperature. © 2015 American Chemical Society.
Subject
Nano Technology
MAS - Materials Solutions
TS - Technical Sciences
Buildings and Infrastructures
Materials
2015 Urbanisation
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http://resolver.tudelft.nl/uuid:9546c1fe-b428-4b84-899a-8e2b28eb3d64
DOI
https://doi.org/10.1021/acs.jpcc.5b08730
TNO identifier
531361
Publisher
American Chemical Society
ISSN
1932-7447
Source
Journal of Physical Chemistry C, 119 (52), 28711-28720
Document type
article