High pressure investigations on fluid mixtures with a diamond anvil cell: Liquid-liquid phase equilibria and ''high pressure immiscibility'' of the system 1-butanol plus 2-methyl-2-propanol plus water up to 2.9 GPa

被引：9

作者：

Grzanna, R ^{[1
]}

Schneider, GM ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM, LEHRSTUHL PHYS CHEM 2, D-44780 BOCHUM, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1996年 / 193卷

关键词：

liquid-liquid phase equilibria; ternary mixture; high pressure; diamond anvil cell (DAC); high pressure immiscibility;

D O I：

10.1524/zpch.1996.193.Part_1_2.041

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：

The phase equilibria of the ternary system 1-butanol + 2-methyl-2-propanol + water are investigated in the temperature range from 320 K to 470 K and at pressures up to 2.9 GPa using the diamond anvil cell (DAC) technique. T(p) isopleths that have been determined experimentally for selected constant compositions are presented. Liquid-liquid phase separation exhibiting lower solution pressures is found; here a pressure increase results in an expansion of the miscibility gap. In the lower temperature range crystallization occurs. The results are discussed especially with respect to the appearance of so-called ''high pressure immiscibility'' phenoma.

引用

页码：41 / 47

页数：7

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