Application of Acid Modified Catalysts with Different SiO_(2) Contents in the Hydrocracking of Light Cycle Oil for Light Aromatics Production

作     者：Zhong Fu Zuo Tongjiu Xie Yonggang Lu Jiangyin Zhong Fu;Zuo Tongjiu;Xie Yonggang;Lu Jiangyin

作者机构：Key Laboratory of Oil&Gas Fine ChemicalsMinistry of EducationXinjiang Uyghur Autonomous RegionSchool of Chemical EngineeringXinjiang UniversityUrumqi 830046China 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2023年第25卷第1期

页      面：105-114页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：National Natural Science Foundation of China(Grant No.21968034) 

主　　题：zeolite catalyst hydrocracking SiO_(2) LCO BTXE 

摘      要：A series of functionalized USY/SiO_(2) zeolite composite supports were synthesized using the coating coprecipitation method,with tetraethyl orthosilicate(TEOS)as the silicon source and different ratios of USY to *** metals nickel(Ni)and molybdenum(Mo)were loaded onto the supports using the impregnation ***,a series of hydrogenation catalysts were *** characterization results showed that,compared with the USY catalyst,the addition of a certain quantity of SiO_(2) resulted in the disappearance of the strong acid sites on the catalyst,the number of weak acid and medium strong acid sites decreased,and a certain number of secondary mesoporous structures were *** addition of SiO_(2) reduced the secondary cracking of benzene,toluene,xylene,and ethylbenzene(BTXE)effectively,while excessive amounts of SiO_(2) reduced the hydrogenation activity of the catalyst,leading to a decline in the final yield of *** a maximum SiO_(2) content of 45%,the hydrogenation depth of light cycle oil(LCO)reached an optimum *** hydrogenation performance of LCO was investigated in a fixed bed reactor at 380℃,4 MPa,and H2/oil volume ratio of 800:1,where the gasoline and diesel fractions reached 80.00%and 16.74%,***-YS45 had the highest BTXE selectivity,and the final yield of BTXE reached 21.27%.