Supercritical fluid separation for selective quaternary ammonium salt promoted esterification of terephthalic acid

被引：14

作者：

Brown, JS

Lesutis, HP

Lamb, DR

Bush, D

Chandler, K

West, BL

Liotta, CL

Eckert, CA ^{[1
]}

Schiraldi, D

Hurley, JS

机构：

[1] Georgia Inst Technol, Sch Chem Engn, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

[3] KoSa, Spartanburg, SC 29304 USA

[4] Buckeye Technol, Memphis, TN 38112 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1999年 / 38卷 / 10期

关键词：

D O I：

10.1021/ie990040f

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We report the selective removal of a desired reaction intermediate with a supercritical fluid in a new synthesis route to poly(ethylene terephthalate), avoiding ethylene glycol. We have successfully catalyzed the esterification of terephthalic acid with ethylene oxide in a supercritical fluid with a series of quaternary ammonium salts to form mono(2-hydroxyethyl terephthalate). This desired monoester was removed from the involatile bed of terephthalic acid and catalyst by continuous extraction with supercritical fluid before subsequent reaction to the diester could take place.

引用

页码：3622 / 3627

页数：6

共 11 条

[1] PHASE-EQUILIBRIA FOR SUPERCRITICAL FLUID PROCESS DESIGN [J].