|本期目录/Table of Contents|

[1]余倩倩*,孙志国,张忠东,等.不同结构分子筛对正己烷催化裂解反应性能的影响[J].石化技术与应用,2024,3:171-176.
 YU Qian-qian,SUN Zhi-guo,ZHANG Zhong-dong,et al.Effect of zeolites with different structures on the catalytic cracking performance of n-hexane[J].Petrochemical technology & application,2024,3:171-176.
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不同结构分子筛对正己烷催化裂解反应性能的影响(PDF)

《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:
2024年3期
页码:
171-176
栏目:
出版日期:
2024-05-10

文章信息/Info

Title:
Effect of zeolites with different structures on the catalytic cracking performance of n-hexane
文章编号:
1009-0045(2024)03-0171-06
作者:
余倩倩1*孙志国1张忠东1高雄厚1高善彬1史得军1刘超伟1曾鹏晖2
1.中国石油石油化工研究院,北京 102206;2.中国石油大学(北京) 化学工程与环境学院,北京 102206
Author(s):
YU Qian-qian1SUN Zhi-guo1ZHANG Zhong-dong1GAO Xiong-hou1GAO Shan-bin1SHI De-jun1LIU Chao-wei1ZENG Peng-hui2
1.Petrochemical Research Institute,PetroChina,Beijing 102206,China;2. College of Chemical Engineering and Environment,China University of Petroleum(Beijing),Beijing 102206,China
关键词:
低碳烯烃催化裂解正己烷IM-5分子筛Al-ITQ-13分子筛USY分子筛ZSM-23分子筛
Keywords:
light olefinscatalytic crackingn-hexaneIM-5 zeoliteAl-ITQ-13 zeoliteUSY zeoliteZSM-23 zeolite
分类号:
TE 624.9+1
DOI:
DOI:10.19909/j.cnki.ISSN1009-0045.2024.03.0171
文献标识码:
B
摘要:
对不同结构分子筛IM-5,Al-ITQ-13,USY和ZSM-23的物相、孔结构、晶粒形貌及酸性质进行了对比分析,并在固定床微反装置上对上述4种分子筛催化正己烷裂解反应性能进行了评价。结果表明:4种分子筛均为纯相,具有较高的结晶度,USY具有最大的比表面积、孔体积和酸量,ZSM-23的比表面积和孔体积最小,Al-ITQ-13的酸量最低;USY和IM-5的正己烷转化率较高,说明酸性质与反应活性直接相关,Al-ITQ-13的低碳烯烃总收率和选择性最高,说明低碳烯烃选择性与酸量和孔结构密切相关;具有适宜酸量、较小孔径的Al-ITQ-13在正己烷催化裂解反应中表现出增产低碳烯烃的优异催化性能。
Abstract:
The comparative analysis of the phase, pore structure, grain morphology, and acidic properties of zeolites IM-5, Al-ITQ-13, USY, and ZSM-23 with different structures was conducted, and the n-hexane catalytic cracking reaction performance of four zeolites was evaluated in a fixed-bed micro-reaction device. The results showed that all four types of zeolites were pure phases with high crystallinity, USY had the largest specific surface area, pore volume, and acidity, ZSM-23 had the smallest specific surface area and pore volume, and Al-ITQ-13 had the lowest acidity. The high conversion rates of n-hexane in USY and IM-5 indicated a direct correlation between acidic properties and reaction activity. And the total yield and selectivity of light olefins in Al-ITQ-13 were the highest, indicating that the selectivity of light olefins was closely related to acid content and pore structure. Al-ITQ-13 with suitable acidity and smaller pore size exhibited excellent catalytic performance in increasing light olefins in the catalytic cracking reaction of n-hexane.

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备注/Memo

备注/Memo:
中国石油天然气股份有限公司资助项目(项目编号:2023 ZZ 36)
更新日期/Last Update: 2024-05-10