Supercritical carbon dioxide extraction of liquid crystalline azobenzenes

被引：7

作者：

Barrado, I

Meseguer, V

Bermudez, MD

MartinezNicolas, G

机构：

[1] ESCUELA TECN SUPER INGN IND,DEPT INGN MAT & FABRICAC,GRP CIENCIA MAT & INGN MET,CARTAGENA 30203,SPAIN

[2] ESCUELA TECN SUPER INGN IND,DEPT INGN QUIM CARTAGENA,GRP INQUICA,CARTAGENA 30203,SPAIN

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 1997年 / 11卷 / 1-2期

关键词：

carbon dioxide; liquid crystals; supercritical fluid extraction; time-temperature-pressure model;

D O I：

10.1016/S0896-8446(97)00023-5

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：

Liquid crystalline 4,4'-dialkylazobenzenes have been extracted from their synthetic reaction mixture with supercritical carbon dioxide. The simplex method has been used to optimize the time-temperature-pressure parameters. Supercritical extraction significantly improves the yield of the azobenzenes and strongly reduces the purification time as compared with the conventional column chromatography method. (C) 1997 Elsevier Science B.V.

引用

页码：73 / 80

页数：8

共 22 条

[1]

ANDO DJ, 1991, FINE CHEM ELECT IND, V2

[2]

BERMUDEZ MD, 1992, AN ING MEC, V2, P217

[3] AUTOMATED OPTIMIZATION IN HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY [J].