Jayadeokar, S. S. ; Sharma, M. M. (1993) Ion exchange resin catalysed etherification of ethylene and propylene glycols with isobutylene Reactive Polymers, 20 (1-2). pp. 57-67. ISSN 0923-1137
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0923-1137(93)90066-O
Abstract
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 × 10-4 m3 capacity autoclave in the temperature range 50-70°C. The maximum conversion of glycols was obtained at 60°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°C with the same catalyst.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Ethylene Glycol; Propylene Glycol; Tert-butyl Ethers; Ion Exchange Resin Catalysts |
| ID Code: | 46142 |
| Deposited On: | 02 Jul 2011 10:52 |
| Last Modified: | 07 Jul 2011 04:23 |
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