Inorganic salt hydrates as cryoporometric probe materials to obtain pore size distribution
2006 (English)In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 110, no 9, 3867-3870 p.Article in journal (Refereed) Published
The depression of the melting temperature of Zn(NO3)(2)center dot 6H(2)O was used to obtain the pore size distributions in controlled pore glasses. Measured by H-1 NMR, the average value of the temperature depression AT and the known average pore size yield K = Delta T center dot d approximate to 11.6 K center dot nm as the material-dependent factor for Zn(NO3)(2)center dot 6H(2)O in the Gibbs-Thompson equation. The melting temperature is close to room temperature. Hence, this salt hydrate and some related other ones are better materials than water (K approximate to 50 K center dot nm) for cryoporometric studies of systems with hydrophilic pores. The data also provide 46 mN/m for the solid-liquid surface tension of this salt hydrate.
Place, publisher, year, edition, pages
2006. Vol. 110, no 9, 3867-3870 p.
Glass, Hydrates, Hydrophilicity, Melting, Surface tension, Temperature measurement, Zinc compounds
IdentifiersURN: urn:nbn:se:kth:diva-6452DOI: 10.1021/jp055915kISI: 000235944500008ScopusID: 2-s2.0-33645697448OAI: oai:DiVA.org:kth-6452DiVA: diva2:11170
QC 201009202006-11-292006-11-292010-09-20Bibliographically approved