Findenegg Gerhard H, Jähnert Susanne, Akcakayiran Dilek, Schreiber Andreas
Institut für Chemie, Stranski Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin, Berlin, Germany.
Chemphyschem. 2008 Dec 22;9(18):2651-9. doi: 10.1002/cphc.200800616.
In nanosized pores, liquid water can be thermodynamically stable down to temperatures well below the limit of homogeneous nucleation of bulk water ( approximately 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.
在纳米尺寸的孔隙中，液态水在远低于 bulk 水均匀成核极限（约235K）的温度下仍可保持热力学稳定。因此，对这种孔隙中水分的研究为揭示深度过冷水的异常行为提供了契机。在此，我们基于蒸汽吸附测量、量热研究、核磁共振光谱和低温孔率测定以及中子衍射研究，重点关注近期关于孔径在2 - 10nm范围内的有序介孔二氧化硅圆柱孔中水分冻结和融化极限的研究。
