催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (4): 319-324.

• 研究论文 • 上一篇    下一篇

丁烯-2在HZSM-5分子筛上的齐聚反应

刘姝1,2,3,李春林1,刘广宇1,3,张大治1,3,张阳阳1,3,孙新德1,刘中民1   

  1. 1 中国科学院大连化学物理研究所, 辽宁大连 116023; 2 辽宁石油化工大学, 辽宁抚顺 113001; 3 中国科学院研究生院, 北京 100049
  • 收稿日期:2008-04-25 出版日期:2008-04-25 发布日期:2012-03-22

Oligomerization of Butene-2 over HZSM-5 Zeolite

LIU Shu1,2,3, LI Chunlin1, LIU Guangyu1,3, ZHANG Dazhi1,3, ZHANG Yangyang1,3, SUN Xinde1, LIU Zhongmin1*   

  1. 1 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2 Liaoning University of Petroleum and Chemical Technology, Fushun 113001, Liaoning, China; 3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2008-04-25 Online:2008-04-25 Published:2012-03-22

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摘要： 在温度为210～300 ℃、压力为3～5 MPa、LHSV为0.5～1.5 h-1的条件下,用连续固定床反应器,考察了丁烯-2在HZSM-5上的齐聚反应. 结果表明: 丁烯-2在HZSM-5分子筛上的反应类型和产物中高碳烯烃的含量与温度、压力及空速有关. 反应温度在300 ℃以下,反应产物主要是烯烃,其结构显示择形催化的特点. HZSM-5分子筛的酸性对齐聚反应的活性和选择性有一定影响,低硅铝比的HZSM-5有较高的活性和高碳烯烃的选择性.

关键词: 丁烯-2, 齐聚, HZSM-5, 酸性, 硅铝比

Abstract: Oligomerization of butene-2 over HZSM-5 zeolite was carried out in a continuous flow fixed-bed reactor at210-300℃,3-5MPa, and0.5-1.5h-1of LHSV. The results showed that the reactions of butene-2 over the HZSM-5 zeolite and the content of higher molecular weight olefins in liquid products were influenced by temperature, pressure, and space velocity. The product was dominantly olefins at the reaction temperatures below 300 ℃, and the less branched structure of the product suggested shape-selective catalysis over HZSM-5. The acidity of the HZSM-5 zeolite influenced the activity and selectivity, and the zeolite with lower silica/alumina ratio enhanced the liquid yield and selectivity for higher olefins.

Key words: butene-2, oligomerization, HZSM-5 zeolite, acidity, silica-alumina ratio