NDLI: Novel Two-Phase Catalysis with Organometallic Compounds for Epoxidation of Vegetable Oils by Hydrogen Peroxide

Content Provider	Springer Nature Link
Author	Jiang, Pingping Chen, Min Dong, Yuming Lu, Yun Ye, Xia Zhang, Weijie
Copyright Year	2009
Abstract	A series of new organometallic catalysts for epoxidized vegetable oils using H$_{2}$O$_{2}$ in a biphasic system were investigated. The effect of reaction parameters such as the amount of hydrogen peroxide, reaction time and temperature in the epoxidation of soybean oil are discussed in detail. A selectivity of 83.8% was obtained in 4 h at 60 °C, when [(C$_{18}$H$_{37}$)$_{2}$N(CH$_{3}$)$_{2}$]$_{3}${PO$_{4}$[WO(O$_{2}$)$_{2}$]$_{4}$} was used as the catalyst. When methyltrioxorhenium (MTO), imidazole and CH$_{3}$CN were used as the catalyst, adduct, and solvent respectively, a selectivity of 99.90% was achieved in 4 h at 20 °C. The catalytic system was used for the epoxidation of other oils, whose results showed it was active in the epoxidation of long-chain unsaturated compounds. Furthermore, the reaction of H$_{2}$O$_{2}$ with methyltrioxorhenium was studied by UV–Vis spectroscopy, which revealed the active peroxorhenium complexes formed during the reaction. Epoxidation of these oils with organometallic compounds occurred through the interactions between the oils unsaturated sites HOMO π(C–C) and the unoccupied peroxo σ*(O–O) orbital.
Starting Page	83
Ending Page	91
Page Count	9
File Format	PDF
ISSN	0003021X
Journal	Journal of the American Oil Chemists' Society
Volume Number	87
Issue Number	1
e-ISSN	15589331
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-09-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fats and oils Liquid phase epoxidation Peroxo-organometallic compounds Peroxorhenium complexes Peroxophosphatotungstate Biotechnology Food Science Agriculture Biomaterials Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering

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