Low-Temperature Phase Equilibria in an Ethylene Glycol-Acetone System

被引：1
|
作者：
Solonina, I. A. [1 ]
Makaev, S. V. [2 ]
Rodnikova, M. N. [1 ]
Kiselev, M. R. [3 ]
Khoroshilov, A. V. [1 ]
机构：
[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119071, Russia
[2] Russian Acad Sci, Topchiev Inst Petrochem Synth, Moscow 119071, Russia
[3] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2023年 / 97卷 / 02期
关键词：
differential scanning calorimetry; low-temperature melting; devitrification temperature; rapidly cooled samples;
D O I：
10.1134/S0036024423020267
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：
An ethylene glycol (EG)-acetone (AC) system is studied via differential scanning calorimetry in the -140 to +40 degrees C range of temperatures. A phase diagram is plotted over the range of concentrations. It is found that the mixtures in the system are supercooled by more than 30 degrees C. Low-temperature melting is recorded in the region around -98 degrees C, which corresponds to the eutectic point temperature. The devitrification of rapidly cooled samples is observed in the range of concentrations up to similar to 21 mol % AC, and the temperature of devitrification is determined (T-g similar to -120 degrees C). The plotted phase diagram of the EG-AC system is compared to a water-acetone phase diagram.
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页码：328 / 333
页数：6
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