Freezing and Melting of Water Confined in Silica Nanopores

被引：252

作者：

Findenegg, Gerhard H. ^{[1
]}

Jaehnert, Susanne ^{[1
]}

Akcakayiran, Dilek ^{[1
]}

Schreiber, Andreas ^{[2
]}

机构：

[1] Tech Univ Berlin, Stranski Lab Phys & Theoret Chem, D-10623 Berlin, Germany

[2] Porotec GmbH, D-65719 Hofheim Ts, Germany

来源：

CHEMPHYSCHEM | 2008年 / 9卷 / 18期

关键词：

calorimetry; phase transitions; silica; thermodynamics; water structure;

D O I：

10.1002/cphc.200800616

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In nanosized pores, liquid water can be thermodynamically stable down to temperatures well below the limit of homogeneous nucleation of bulk water (similar to 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.

引用

页码：2651 / 2659

页数：9

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