%0 Journal Article
%T Selectiveoxidationofsulfursandoxidationdesulfurizationofmodeloilby12-tungstophosphoricacidoncobalt-ferritenanoparticlesasmagneticallyrecoverablecatalyst
%A Ezzat Rafiee
%A Nasibeh Rahpeyma
%J ´ß»¯Ñ§±¨
%P 1342-1349
%D 2015
%R 10.1016/S1872-2067(15)60862-2
%X £¿Silica-coatedCoFe2O4nanoparticleswerepreparedandusedasasupportfortheimmobilizationof12-tungstophosphoricacid,toproduceanewmagneticallyseparablecatalyst.ThiscatalystwascharacterizedusingX-raydiffraction,wavelength-dispersiveX-rayspectroscopy,Fourier-transforminfraredspectroscopy,scanningelectronmicroscopy,transmissionelectronmicroscopy,laserparticlesizeanalysis,andvibratingsamplemagnetometry.Thecatalystshowedhighactivityintheselectiveoxidationofthioethersandthiophenestothecorrespondingsulfonesundermildconditions.Thecatalyticactivityofthenanocatalystintheoxidativedesulfurizationofmodeloilwasinvestigated.Theeffectofnitrogen-containingcompoundsonsulfurremovalfromthemodeloilwasalsoevaluated.Thecatalystshowedhighactivityintheoxidativedesulfurizationofdiesel.Thecatalystcanbereadilyisolatedfromtheoxidationsystemusinganexternalmagnetandnoobviouslossofactivitywasobservedwhenthecatalystwasreusedinfourconsecutiveruns.
%K Phosphotungsticacid
%K Cobalt
%K Ferrite
%K Oxidativedesulfurization
%K Dibenzothiophene
%K Magneticcatalyst
%U http://www.chxb.cn/CN/abstract/abstract21628.shtml