Ni/ZSM-5 Catalysts for Light Olefin Oligomerization:Effects of Supports and Ni Sites on Activity and Selectivity  

作　　者：Zuo Qi Liang Ke Ma Yirong Jia Yangxiao Liao Mingjie Zheng Jiajun Li Ruifeng Li Wenlin 

机构地区：[1]College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China

出　　处：《China Petroleum Processing & Petrochemical Technology》2024年第3期15-23,共9页中国炼油与石油化工（英文版）

基　　金：Financial support was obtained from the State Key Laboratory of Petroleum Molecular&Process Engineering(24-ZC0607-0099);the Natural Science Foundation of China(21706177 and 22378293).

摘　　要：A series of Ni/ZSM-5 containing a small amount of Ni was prepared by an ion exchanged method.The impact of the n(SiO_(2))/n(Al_(2)O_(3))ratio on the catalytic activity was studied using the samples 0.09Ni/ZSM-5(60)and 0.09Ni/ZSM-5(130).To determine the interaction between the Ni species and acid sites on the surface of the catalyst,the catalysts were characterized by N2 adsorption-desorption,X-ray diffraction(XRD),scanning electron microscopy(SEM),and UV-vis spectroscopy.The performance of the catalysts for the catalytic oligomerization of 1-hexene was investigated in detail.The nickel species were found to be uniformly distributed in all the catalysts.It was discovered that the oligomerization activity of the catalyst can be improved using Ni species;however,the contribution of Brønsted acids in oligomerization reactions is greater than that of Ni sites and Lewis acids.

关 键 词：nickel ZEOLITE acid sites OLIGOMERIZATION catalyst 

分 类 号：TQ426[化学工程]