期刊
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
卷 85, 期 9, 页码 887-896出版社
WILEY
DOI: 10.1007/s11746-008-1277-z
关键词
canola oil; epoxidation; peroxyacetic acid; ion exchange resin; lubricant
资金
- Saskatchewan Canola Development Commission (SCDC)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
Canola oil with an iodine value of 112/100 g, and containing 60% oleic acid and 20% linoleic acid, was epoxidised using a peroxyacid generated in situ from hydrogen peroxide and a carboxylic acid (acetic or formic acid) in the presence of an acidic ion exchange resin (AIER), Amberlite IR 120H. Acetic acid was found to be a better oxygen carrier than formic acid, as it produced about 10% more conversion of ethylenic unsaturation to oxirane than that produced by formic acid under otherwise identical conditions. A detailed process developmental study was then performed with the acetic acid/AIER combination. The parameters optimised were temperature (65 C), acetic acid to ethylenic unsaturation molar ratio (0.5), hydrogen peroxide to ethylenic unsaturation molar ratio (1.5), and AIER loading (22%). An iodine conversion of 88.4% and a relative conversion to oxirane of 90% were obtained at the optimum reaction conditions. The heterogeneous catalyst, AIER, was found to be reusable and exhibited a negligible loss in activity.
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