๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Ion exchange resin catalysed etherification of ethylene and propylene glycols with isobutylene

โœ Scribed by S.S. Jayadeokar; M.M. Sharma

Book ID
103956575
Publisher
Elsevier Science
Year
1993
Weight
697 KB
Volume
20
Category
Article
ISSN
0923-1137

No coin nor oath required. For personal study only.

โœฆ Synopsis

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 m 3 capacity autoclave in the temperature range 50-70ยฐC. The maximum conversion of glycols was obtained at 60ยฐC 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 120ยฐC with the same catalyst.

๐Ÿ“œ SIMILAR VOLUMES

Separation of close boiling phenols and
Separation of close boiling phenols and naphthols through their selective etherification with isobutylene / isoamylene acidic ion exchange resin as catalyst
โœ Swapan Kumar Ghosh; Man Mohan Sharma ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science โš– 784 KB

The etherification of phenol and substituted phenols, such as o-chlorophenol, o-ethylphenol and guaiacol and a-and 13-naphthols with isobutylene and isoamylene was studied. The etherification was carried out in the presence of an acidic ion exchange resin, Amberlyst 15, as a catalyst and in the temp