High-Temperature Cracking Performance of 1-Pentene and n-Pentane on ZSM-5 Zeolites With Different Si/Al Ratios

被引：0

作者：

Wang, Ruilin ^{[1
,2
]}

Xu, Youhao ^{[1
,2
]}

Yang, Wenjie ^{[1
,2
]}

Wang, Yongrui ^{[1
,2
]}

Shu, Xingtian ^{[1
,2
]}

机构：

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

[2] State Key Laboratory of Petroleum Molecular & Process Engineering, Beijing,100083, China

来源：

Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | 2025年 / 41卷 / 04期

关键词：

Cracks - Molar ratio - Zeolites;

D O I：

10.3969/j.issn.1001-8719.2025.04.009

中图分类号：

学科分类号：

摘要：

This study systematically evaluates the cracking performance of 1-pentene and n-pentane over H-ZSM-5 zeolites with different Si/Al ratio at the reaction temperature of 700 °C，reaction pressure of 0. 13 MPa，and a mass hourly space velocity（MHSV）of 70 h-1. It reveals that the cracking reaction activity of 1-pentene is significantly higher than that of n-pentane. With an increase in the Si/Al ratio of H-ZSM-5 zeolite，thermal cracking increases，and the hydrogen transfer coefficient（HTC）decreases. Under the same reaction conditions，the thermal cracking proportion and HTC of 1-pentene on zeolites are much lower than those of n-pentane. Furthermore，the molar selectivity ratio of ethylene to methane （s（ C2H4）/ s（ CH4））in the catalytic cracking products of 1-pentene is 2—6 times higher than that in those of n-pentane，and it is difficult to achieve a balance between n-pentane cracking conversion and product selectivity by adjusting the Si/Al ratios of zeolites. Therefore，1-pentene is identified as a high-quality raw material for targeted catalytic cracking processes，and can achieve the peak ethylene selectivity of 35. 03% in its cracking products over HZ-85 zeolite. © 2025 Editorial Office of Acta Petrolei Sinica. All rights reserved.

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页码：960 / 968