Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (8): 1263-1274.DOI: 10.1016/S1872-2067(16)62451-8

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Amine-functionalized boehmite nanoparticle-supported molybdenum and vanadium complexes: Efficient catalysts for epoxidation of alkenes

Mahdi Mirzaee, Bahram Bahramian, Marieh Mirebrahimi   

  1. Department of Chemistry, Shahrood University of Technology, Shahrood, Iran
  • Received:2016-03-26 Revised:2016-04-30 Online:2016-07-29 Published:2016-08-01
  • Contact: Mahdi Mirzaee

Abstract:

Boehmite nanoparticles with a high surface area and a high degree of surface hydroxyl groups were covalently functionalized by 3-(trimethoxysilyl)-propylamine to support vanadium-oxo-sulfate and molybdenum hexacarbonyl complexes. These supported catalysts were then characterized by Fourier-transform infrared spectroscopy, powder X-ray diffraction, thermogravimetry and differential thermal analysis, X-ray-photoelectron spectroscopy, elemental analysis, inductively coupled plasma, and transmission electron microscopy techniques. The catalysts were subsequently used for the epoxidation of cis-cyclooctene, and the experimental procedures were optimized. The progress of the reactions was investigated by gas-liquid chromatography. Recycling experiments revealed that these nanocatalysts could be repeatedly used several times for a nearly complete epoxidation of cis-cyclooctene. The optimized experimental conditions were also used successfully for the epoxidation of some other substituted alkenes.

Key words: Boehmite nanoparticles, Heterogeneous catalysts, Hexa-carbonyl molybdenum, Oxo-sulfate vanadium, Epoxidation