Water Transport in MgSO4·7H2O during Dehydration in View of Thermal Storage

P.A.J. Donkers; S. Beckert; L. Pel; F. Stallmach; M. Steiger; O.C.G. Adan

doi:10.1021/acs.jpcc.5b08730

Water Transport in MgSO₄·7H₂O during Dehydration in View of Thermal Storage

P.A.J. Donkers, S. Beckert, L. Pel, F. Stallmach, M. Steiger, O.C.G. Adan

Transport in Permeable Media

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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Samenvatting

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.

Originele taal-2	Engels
Pagina's (van-tot)	28711-28720
Aantal pagina's	10
Tijdschrift	Journal of Physical Chemistry C
Volume	119
Nummer van het tijdschrift	52
DOI's	https://doi.org/10.1021/acs.jpcc.5b08730
Status	Gepubliceerd - 31 dec. 2015

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10.1021/acs.jpcc.5b08730

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