Structural transformations of supercooled water in nanopores, studied by microwave radiation

被引：2
|
作者：
Bordonskiy, G. S. [1 ]
Krylov, S. D. [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Nat Resources Ecol & Cryol, Chita 672014, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2012年 / 86卷 / 11期
关键词：
supercooled water; nanopores; microwave radiation; no man's land; inaccessible temperature region; LIQUID WATER; SURFACE; GLASS;
D O I：
10.1134/S0036024412110064
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：
It is shown that the state of supercooled water in nanoporous materials can be studied by measuring the attenuation of microwave radiation. By analyzing variations in the intensity of radiation transmitted through a moistened medium during the supercooling of water in the range of -37 to -190A degrees C, the temperatures at which structural transformations take place can be determined. Using the example of KSKG silica gel with a mean pore size of 8 nm, it is shown that at a moisture of 3-18%, water is found in the liquid state up to a temperature of -130A degrees C, at which the transition to glass occurs.
引用
收藏
页码：1682 / 1688
页数：7
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