Preparation Of Tungsten-based Molecular Sieve Catalyst And Its Application In Oxidative Desulfurization Of Fuel Oil

Oxidative desulfurization of fuel oil is more domestic and international research of non hydrogenation desulfurization technology,this technology is a kind of deep desulfurization technology,the organic sulfur contained in the fuel oil extraction by catalytic oxidation into more polar organic compounds containing oxygen,which ran to a removal from oh.ZSM series molecular sieves have abundant pore structure,good thermal stability and ion exchange characteristics.They are widely used in chemical industry as the basic material of desulfurization catalyst for fuel oil.In this paper,the tungsten-based molecular sieve catalyst W03-ZSM-5/MCM-41 was prepared by using ZSM-5/MCM-4 as the base material,and then treated with alkali solution,and the active metal loading was carried out.In this paper,the effects of oxidant dosage,catalyst dosage,reaction temperature,reaction time and other factors on the oxidation of desulfurization were studied.The desulfurization rate of thiophene-n-octane simulated oil was 84.03%,and the desulfurization rate of the thiophene-n-octane simulated oil was 84.03%when the optimum conditions were as follows:FCC 5ml,5%oxidant dosage,reaction temperature 75 ? and reaction time 125min the maximum oxidation desulfurization rate of petrol is 72.28%.The catalytic oxidation of FCC gasoline was carried out by using the catalyst synthesized in this paper.The kinetic model of the experimental data was obtained and the kinetic model of catalytic oxidation desulfurization was obtained.