Open AccessФазовые переходы воды в порах цеолита
Author(s) -
Г.С. Бордонский,
А.О. Орлов
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.05.47391.17265
Subject(s) - zeolite , materials science , mineralogy , chemistry , organic chemistry , catalysis
AbstractPhase transition temperatures of water are experimentally determined for the case in which ice melts in the pores of zeolite (natural mineral) with a pore size of 0.2–2 nm. Three temperatures with a sharp change in the heat capacity and extremes of low-frequency electrical fluctuations are found when moistened material is heated from –150 to 100°C, the values of which are –20, 43, and 86°C. These values are associated with the melting of polygonal structures containing from five to seven water molecules.