Solubility of Disperse Red 82 and modified Disperse Yellow 119 in supercritical carbon dioxide or nitrous oxide with ethanol as a cosolvent

被引：15

作者：

Lee, Ming-Jer ^{[1
]}

Ho, Chun-Chia ^{[1
]}

Lin, Ho-mu ^{[1
]}

Wang, Po-yo ^{[2
]}

Lu, Juhng-shu ^{[2
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 10607, Taiwan

[2] Taiwan Text Res Inst TTRI, Dept Prod, Dyeing Finishing & Environm Protect Sect, New Taipei City 23674, Taiwan

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2014年 / 95卷

关键词：

Disperse Red 82; Modified Disperse Yellow 119; Carbon dioxide; Nitrous oxide; Ethanol; DYES; BLUE-79; RED-153; SOLIDS;

D O I：

10.1016/j.supflu.2014.08.023

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：

Ethanol was used as a cosolvent to enhance the solubility of disperse dyestuffs in supercritical fluids. In the presence of ethanol, from (1 to 5) mol%, the gas-solid equilibrium data of the Disperse Red 82 and modified Disperse Yellow 119 in supercritical carbon dioxide or nitrous oxide have been measured at temperatures from (353.2 to 393.2) K and pressures from (15.0 to 30.0) MPa. The experimental results show that the solubility increases substantially, up to (9 to 25)-fold, by adding 5 mol% of ethanol to the supercritical fluids. In the presence of cosolvent ethanol, the solubility enhancements in nitrous oxide system are much greater than that in carbon dioxide system for modified Disperse Yellow 119 at the same temperature and pressure. The solubility data were correlated with the Chrastil and the Mendez-Santiago and Teja models. The Mendez-Santiago and Teja model yields slightly better results than Chrastil model. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：258 / 264

页数：7

共 22 条

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