Ce_(2)(MoO_(4))_(3) as an efficient catalyst for aerobic oxidative desulfurization of fuels  

作　　者：Xiao-Yi Liu Xiu-Ping Li Rong-Xiang Zhao 

机构地区：[1]School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun,113001,Liaoning,China

出　　处：《Petroleum Science》2022年第2期861-869,共9页石油科学（英文版）

基　　金：financial support of the Natural Science Foundation of Liaoning Province(2019-ZD-0064);Doctoral Fund of Liaoning Province(201501105)

摘　　要：Ce_(2)(MoO_(4))_(3)was synthesized by a simple reflux method using cerium nitrate hexahydrate and ammonium molybdate as reactants.The as-prepared Ce_(2)(MoO_(4))_(3)was characterized by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),Scanning electron microscope(SEM),and X-ray photoelectron spectroscopy(XPS).The removal of dibenzothiophene(DBT)in model oil was studied using Ce_(2)(MoO_(4))_(3)as catalyst and oxygen as oxidant.The reaction factors such as reaction temperature,amount of catalyst,and sulfide type on sulfur removal were researched.The results prove that both Ce3+and MoO42-play significant role in the conversion from DBT to DBTO2.The Ce_(2)(MoO_(4))_(3)catalyst has an excellent performance for the sulfur removal of DBT.Under the optimum reaction conditions,sulfur removal of 99.6%was obtained.After recycling five times,no significant loss in catalyst activity of Ce_(2)(MoO_(4))_(3).Mechanism of aerobic oxidative desulfurization was proposed based on the experiment of free radical capture and infrared characterization.

关 键 词：Ce_(2)(MoO_(4))_(3) Aerobic oxidative desulfurization DIBENZOTHIOPHENE REFLUX Renewability 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]