Hydrodesulfurization and isomerization performance of model FCC naphtha over sulfided Co(Ni)eMo/Y catalysts  

作　　者：Dongyang Liu Guohao Zhang Xinsheng Kang Wenzhe Wu Liang Zhao Jinsen Gao Chunming Xu 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum(Beijing),Beijing 102249,China

出　　处：《Chinese Journal of Chemical Engineering》2025年第1期185-194,共10页中国化学工程学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(U22B20140,22021004,22325808,22393950);the National Key Research and Development Program of China(2020YFA0210900).

摘　　要：The process of deep hydrodesulfurization(HDS)in gasoline typically results in the saturation of olefins,leading to significant reductions in octane number.In this work,Y-supported Co(Ni)eMo catalysts that with different NieCo content were prepared by the incipient wetness impregnation method,the structure and properties were characterized and analyzed using HRTEM,XPS,H_(2)-TPR,and NH_(3)-TPD.The isomerization of 1-hexene and 1-octene as well as the HDS of thiophene were studied by using model FCC naphtha.The incorporation of Ni was found to enhance the number of MoS_(2) stacking layers,thereby improving the degree of sulfurization in Mo and subsequently increasing the desulfurization rate,with a maximum achieved desulfurization rate of 94.7%.When employing a Ni/Co ratio of 3:2,optimal synergy between Ni and Co is achieved,resulting in a greater presence of multi-layer stacked II-Co(Ni)MoS active phases.Additionally,appropriate Brønsted acidity levels are maintained to facilitate efficient olefin isomerization while preserving high HDS activity.As a result,the current isomerization yield stands at 58.2%(mass).These understandings shed light on the development of highly HDS and olefin isomerization catalysts.

关 键 词：HYDRODESULFURIZATION ISOMERIZATION Co(Ni)-Mo/Y Co(Ni)MoS 

分 类 号：O64[理学—物理化学]