摘要：Ni-modified ZSM-5 zeolites with different nickel contents were successfully prepared by the in situ synthesis method and the impregnation method. The synthesized samples were characterized by XRD, SEM, N-2 adsorption-desorption isothermals, and Py-FTIR. The characterization results show that both the textural properties and crystallization of Ni-modified ZSM-5 zeolites were preserved well, and their acidic properties can be modulated after nickel modification. The corresponding NiMo catalysts supported on Ni-modified ZSM-5 zeolites were prepared by the incipient wetness co-impregnation method, and their catalytic performances were evaluated in n-octane hydroconversion. Compared to the those modified by the in situ synthesis method, ZSM-5 zeolite-supported catalysts modified by the impregnation method exhibit higher stability and higher isomerization selectivity. This is due to the synergistic effect between Bronsted acid sites and Lewis acid sites on the Ni-modified ZSM-5 zeolites, especially for the NiMo/1Ni-Z5 catalyst.

关键字：nickel modification; ZSM-5; N-octane; hydroconversion; catalyst

ISSN号：2296-2646

卷、期、页：卷: 8

发表日期：2020-12-11

影响因子：3.692700

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：FRONTIERS IN CHEMISTRY

通讯作者：张鹏飞,刘晓东,黄文斌,范夏韵,闫祎统,张荣勋,王林

第一作者：魏强,周亚松

论文类型：期刊论文

论文概要：魏强,张鹏飞,刘晓东,黄文斌,范夏韵,闫祎统,张荣勋,王林,周亚松，Synthesis of Ni-Modified ZSM-5 Zeolites and Their Catalytic Performance in n-Octane Hydroconversion，FRONTIERS IN CHEMISTRY，2020，卷: 8

论文题目：Synthesis of Ni-Modified ZSM-5 Zeolites and Their Catalytic Performance in n-Octane Hydroconversion