Effects of Hierarchical ZSM-5 Zeolite Catalyst on Tetralin Hydrocracking Reactions to Produce Aromatics

被引：0

作者：

Sun, Lijie ^{[1
]}

Dong, Songtao ^{[1
]}

Long, Xiangyun ^{[1
]}

Ouyang, Ying ^{[1
]}

Luo, Yibin ^{[1
]}

Li, Dadong ^{[1
]}

机构：

[1] Research Institute of Petroleum Processing, SINOPEC, Beijing,100083, China

来源：

Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | 2022年 / 38卷 / 01期

关键词：

D O I：

10.3969/j.issn.1001-8719.2022.01.002

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学科分类号：

摘要：

Hierarchical porous ZSM-5 zeolite was prepared through alkali treatment. Two different types of hydrocracking catalyst were prepared with using either the above hierarchical porous ZSM-5 zeolite or conventional ZSM-5 zeolite as acidic components, respectively. Different analytical methods, including nitrogen adsorption-desorption, X-ray diffraction, pyridine adsorption infrared, ammonia adsorption-desorption and transmission electron microscopy, were used to characterize the zeolite samples. A high-pressure fixed-bed micro-reactor was employed to evaluate hydrocracking reaction performance of tetralin over various catalysts. Under the reaction conditions of temperature 350 ℃, hydrogen partial pressure 4 MPa, hydrogen-oil volume ratio 500/1, reaction space velocity of 5.9 h-1 and reaction time 2 h, compared with the catalyst containing conventional ZSM-5 zeolite, tetralin conversion ratio on the catalyst prepared with hierarchical porous ZSM-5 zeolite can increase ca. 10 percentage point. In addition, BTX yield can improve 2 to 8 percentage point, and selectivity of ring-opening (SRO) reaction can increase ca. 20 percentage point. Evaluation experimental results suggest that the introduced mesopores can improve tetralin accessibility to the acidic sites of ZSM-5 zeolite. This is why both tetralin ring-opening reaction selectivity and BTX yield are improved. © 2022, Editorial Office of Acta Petrolei Sinica(Petroleum Processing Section). All right reserved.

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页码：11 / 19