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   cis-dioxo-mo(vi) salophen complex supported on fe3o4@sio2 nanoparticles as an efficient magnetically separable and reusable nanocatalyst for selective epoxidation of olefins  
   
نویسنده bezaatpour abolfazl ,khatami sahar ,nejati kamellia
منبع journal of the iranian chemical society - 2017 - دوره : 14 - شماره : 10 - صفحه:2105 -2115
چکیده    In this work, paramagnetic fe3o4/sio2 nanoparticles were synthesized, characterized and functionalized with dioxo-mo(vi) tetradentate schiff base complex and characterized using ir spectroscopy, x-ray powder diffraction spectroscopy, scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, diffuse reflectance spectroscopy and atomic absorption spectroscopy. catalyst was used for the selective epoxidation of cyclooctene, cyclohexene, styrene, indene, α-pinene, 1-hepten, 1-octene, 1-dodecen and trans-stilbene using tert-butyl hydroperoxide as oxidant in 1,2-dichloroethane. this catalyst is efficient for oxidation of cyclooctene with a 100% selectivity for epoxidation with 100% conversion in 1 h. after the reaction, the magnetic nanocatalyst was easily separated by simply applying an external magnetic field and was used at least five successive times without significant decrease in conversion.
کلیدواژه schiff base ,dioxomolybdenum(vi) ,epoxidation ,nanoparticles ,magnetically separable ,fe3o4
آدرس university of mohaghegh ardabili, faculty of basic science, department of chemistry, iran, department of chemistry, iran, department of chemistry, iran
 
     
   
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