Phase transitions of 1,2-cyclohexanediol isomers studied by polarised light microscopy and differential thermal analysis

被引：13

作者：

Leitao, MLP ^{[1
]}

Castro, RAE

Costa, FS

Redinha, JS

机构：

[1] Univ Coimbra, Dept Quim, P-3004535 Coimbra, Portugal

[2] Univ Coimbra, Fac Farm, P-3000295 Coimbra, Portugal

来源：

THERMOCHIMICA ACTA | 2001年 / 378卷 / 1-2期

关键词：

1,2-cyclohexanediol; phase transitions; impurities; thermomicroscopy; DTA;

D O I：

10.1016/S0040-6031(01)00590-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Polarised light microscopy and DTA have been used to study the phase transitions observed in cis and trans-1,2-cyclohexanediol during heating/cooling cycles performed between ambient and melting temperatures to prove that the presence of impurities even in trace amounts can affect the thermal properties of the substances. Good quality commercial material before and after further purification were used in this study. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：117 / 124

页数：8

共 18 条

[1]

CARRUTHERS JR, 1975, TREATISE SOLID STATE, V5, pCH7

[2] Chemical microscopy [J].