Freezing and Melting of Water Confined in Silica Nanopores |
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Authors: | Gerhard H. Findenegg Prof. Dr. Susanne Jähnert Dr. Dilek Akcakayiran Dr. Andreas Schreiber Dr. |
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Affiliation: | 1. Institut für Chemie, Stranski Laboratorium für Physikalische und Theoretische Chemie, Technische Universit?t Berlin, Stra?e des 17. Juni 124, 10623 Berlin (Germany), Fax: (+49)?30‐314‐26602;2. Porotec GmbH, 65719 Hofheim/Ts. (Germany) |
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Abstract: | In nanosized pores, liquid water can be thermodynamically stable down to temperatures well below the limit of homogeneous nucleation of bulk water (~235 K). Studies of water in such pores therefore offer an opportunity to reveal the anomalous behavior of deeply supercooled water. Herein we focus on recent studies of the limits of freezing and melting of water in the cylindrical pores of ordered mesoporous silicas with pore diameters in the range of 2–10 nm, based on vapor sorption measurements, calorimetric studies, NMR spectroscopy and cryoporometry, and neutron diffraction studies. |
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Keywords: | calorimetry phase transitions silica thermodynamics water structure |
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