高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (6): 845.

• 研究论文 • 上一篇    下一篇

β-甲基萘歧化反应中HZSM-5择形性

沈剑平1, 马骏1, 蒋大振1, 闵恩泽2   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 北京石油化工科学研究院
  • 收稿日期:1992-08-28 修回日期:1992-12-25 出版日期:1993-06-24 发布日期:1993-06-24
  • 通讯作者: 沈剑平
  • 基金资助:

    中国石油化学工业总公司资助

Shape Selectivity of HZSM-5 in Disproportionation of β-Methylnaphthalene

SHEN Jian-Ping1, MA Jun1, JIANG Da-Zhen1, MIN En-Ze2   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Research Institute of Petroleum Processing, Beijmg
  • Received:1992-08-28 Revised:1992-12-25 Online:1993-06-24 Published:1993-06-24

摘要: 考察了β-甲基萘在HZSM-5及其修饰样品上的歧化反应。用P(C6H5)3及Si(Ph2)Cl2修饰HZSM-5可消除样品的外表面活性中心。β-甲基萘的歧化反应和异构化反应发生在HZSM-5的不同部位。歧化反应在HZSM-5的孔道内进行且选择性地获得2,6-DMN,而异构化反应则发生在HZSM-5的外表面上,外表面活性中心的消除能减少DMN在外表面的二次化反应。

关键词: &beta, -甲基萘, HZSM-5, 歧化, 异构化

Abstract: The disproportionation of β-methylnaphthalene(β-MN) was carried out over HZSM-5 catalysts.The external acid sites were eliminated by modification with P(C6H5)3 and Si(Ph2)Cl2.The dis-proportionation and isomerization of β-MNoccur on different positions of the catalyst, the dispropor-tionation proceeds in the pore of HZSM-5 and yields 2,6-DMNselectively, whereas isomerization only proceeds on the external surface.The secondary reaction of DMNon the surface of HZSM-5 and isomerization are reduced by elimination of the external surface acid sites.

Key words: β-Methylnaphthalene, HZSM-5, Disproportionation, Isomerization

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