کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
608468 | 880593 | 2012 | 7 صفحه PDF | دانلود رایگان |
The epoxidation of 1,4-bis(allyloxy)butane (DiBan) with hydrogen peroxide as an oxidant in the presence of o-phosphoric acid and sodium tungstate as an epoxidation catalyst was carried out in an organic solvent/aqueous solution two-phase medium. A few different phase-transfer catalysts were used in the process. The effect of the stirring speed, nature of solvent, the type of PT catalyst and molar ratio of H2O2:DiBan, DiBan:Na2WO4:H3PO4 on the DiBan conversion as the function of time was studied.Based on the experimental results, a pseudo-first-order expression for the reaction rate was applied and most efficient conditions epoxidation were developed.
Kinetic data of the 1,4-bis(allyloxy)butane (DiBan) epoxidation were presented. The effect of agitation speed, the nature of solvent, the type of PT catalyst and molar ratio of H2O2:DiBan, DiBan:Na2WO4:H3PO4 on the course of this reaction was described.Figure optionsDownload high-quality image (29 K)Download as PowerPoint slideHighlights
► Kinetic data of 1,4-bis(allyloxy)butane epoxidation under aqueous–organic system.
► Hydrogen peroxide as an oxidant. Na2WO4·2H2O, H3PO4 and ammonium salt generate the active form of catalyst. Agitation speed, solvent and molar ratio of reagents are important to high reaction rate.
Journal: Journal of Colloid and Interface Science - Volume 365, Issue 1, 1 January 2012, Pages 191–197