ION-EXCHANGE RESIN CATALYZED ETHERIFICATION OF ETHYLENE AND PROPYLENE-GLYCOLS WITH ISOBUTYLENE

被引：11

作者：

JAYADEOKAR, SS ^{[1
]}

SHARMA, MM ^{[1
]}

机构：

[1] UNIV BOMBAY,DEPT CHEM TECHNOL,BOMBAY 400019,INDIA

来源：

REACTIVE POLYMERS | 1993年 / 20卷 / 1-2期

关键词：

ETHYLENE GLYCOL; PROPYLENE GLYCOL; TERT-BUTYL ETHERS; ION EXCHANGE RESIN CATALYSTS;

D O I：

10.1016/0923-1137(93)90066-O

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Etherification of ethylene and propylene glycols with isobutylene was carried out in the presence of cation exchange resin catalysts, Amberlyst-15, Indion-130, and a homogeneous catalyst, p-toluene sulfonic acid. Kinetics of these reactions was studied in a magnetically stirred 1.0 X 10(-4) m3 capacity autoclave in the temperature range 50-70-degrees-C. The maximum conversion of glycols was obtained at 60-degrees-C and 10% loading of Amberlyst-15 catalyst. Aspects of mono- and di-etherification and etherification of primary versus secondary OH groups in monopropylene glycol were studied. A pseudohomogeneous model fitted the data very well. Optimum values of the rate constants were obtained numerically. The ethers formed could be deetherified easily at 120-degrees-C with the same catalyst.

引用

页码：57 / 67

页数：11

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