Impacts of support properties on the vacuum residue slurry-phase hydrocracking performance of Mo catalysts

作     者：Wei-Wei Feng Ye-Gui Qian Ting-Hai Wang Qing-Yan Cui Yuan-Yuan Yue Pei Yuan Xiao-Jun Bao 

作者机构：College of Chemical EngineeringFuzhou UniversityFuzhouFujian350116China Qingyuan Innovation LaboratoryQuanzhouFujian362801China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2023年第20卷第4期

页      面：2575-2584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：The authors acknowledge National Key Research and Development Program of China(2018YFA0209403) National Natural Science Foundation of China(21908027) Qingyuan Innovation Laboratory Program(00121002)for financing this research 

主　　题：Slurry-phase hydrocracking Vacuum residue Supports Catalytic performance 

摘      要：To deeply understand the effects of support properties on the performance of Mo-based slurry-phase hydrocracking catalysts,four Mo-based catalysts supported on amorphous silica alumina(ASA),γ-Al_(2)O_(3),ultra-stable Y(USY)zeolite and SiO_(2) were prepared by the incipient wetness impregnation method,respectively,and their catalytic performances were compared in the vacuum residue(VR)hydrocracking *** is found that the Mo/ASA catalyst exhibits the highest VR conversion among the different catalysts,indicating that both the appropriate amount of acid sites,especially B acid sites and larger mesoporous volume of ASA can enhance the VR hydrocracking into light ***,Mo catalysts supported on the different supports show quite different product distributions in VR *** Mo/ASA catalyst provides higher yields of naphtha and middle distillates and lower yields of gas and coke compared with other catalysts,it is attributed to the highest MoS_(2) slab dispersion,the highest sulfuration degree of Mo species,and the most Mo atoms located at the edge sites for the Mo/ASA catalyst,as observed by HRTEM and XPS *** features of Mo/ASA are beneficial for the hydrogenation of intermediate products and polycyclic aromatic hydrocarbons to restrict the gas and coke formation.