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.

引用

页码：328 / 333

页数：6

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