Change search
ReferencesLink to record
Permanent link

Direct link
Curvature-dependent metastability of the solid phase and the freezing-melting hysteresis in pores
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry.ORCID iD: 0000-0002-0231-3970
2006 (English)In: Physical Review E, ISSN 1539-3755, Vol. 73, no 1Article in journal (Refereed) Published
Abstract [en]

We recapitulate and generalize the concept of the freezing-melting hysteresis that attributes this phenomenon to a free-energy barrier between metastable and stable states of pore-filling material. In a phenomenological description, we show that under commonly encountered conditions, this renders the freezing-point depression Delta T-f defined by the surface-to-volume ratio S/V, whereas the melting-point depression Delta T-m by the mean curvature kappa of the pore surface, with Delta T-m/Delta T-f=2 kappa(V/S). Employing H-1 NMR cryoporometry, we experimentally demonstrate the linear correlation between Delta T-m and Delta T-f for several liquids with different Delta T-f,T-m imbibed in controlled pore glasses. The results compare favorably to the morphological properties of the glasses determined by other techniques. Our findings suggest a simple method for analyzing the pore morphology from the observed phase transition temperatures.

Place, publisher, year, edition, pages
2006. Vol. 73, no 1
Keyword [en]
single cylindrical pore, nuclear-magnetic-resonance, size dependence, porous solids, supercooled liquids, small particles, gold particles, water, behavior, glass
URN: urn:nbn:se:kth:diva-15399DOI: 10.1103/PhysRevE.73.011608ISI: 000235008500057ScopusID: 2-s2.0-32944467782OAI: diva2:333440
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Furo, Istvan
By organisation
Physical Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 33 hits
ReferencesLink to record
Permanent link

Direct link