Supporting H5[PMo10V2O40] and H5[PW10V2O40] Heteropolyacids onto the Surface of Amine-functionalized Boehmite Nano-particles for Catalytic Epoxidation of Alkenes

Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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تاریخ نمایه سازی: 22 دی 1399


Boehmite nanoparticles were covalently functionalized by 3-(trimethoxysilyl)-propylamine to support H5[PMo10V2O40] and H5[PW10V2O40] Keggin type heteropolyacids. After characterizing these catalysts by FT-IR, PXRD, TG/DTA, CHN, ICP, and TEM techniques, they were applied to the epoxidation of cis-cyclooctene. The progress of the reactions was investigated by gas-liquid chromatography and the catalytic procedures were optimized for the parameters involved, such as the solvent and oxidant. The results showed that 20 mg of supported H5[PMo10V2O40] catalyst in 2 ml C2H4Cl2 with 0.5 mmol cyclooctene and 1 mmol tert-butyl hydroperoxide at reflux temperature gave 98% yield over 60 minutes. Recycling experiments revealed that these nanocatalysts could be repeatedly applied up to four times for a nearly complete epoxidation of cis-cyclooctene. The optimized experimental conditions were also used successfully for the epoxidation of some other alkenes such as cyclohexene, styrene and α-methyl styrene.


Boehmite nanoparticles (BNP) , Keggine type heteropolyacids (HPA) , H5[PMo10V2O40] , H5[PW10V2O40]


Mojgan Jamali

Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran

Mahdi Mirzaee

Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran

Farrokhzad Mohammadi Zonouz

Department of Chemistry, Faculty of Science, Hakim Sabzevari University