高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (9): 972.

• 论文 • 上一篇    下一篇

CF-2沸石的表面酸性及催化性能

陈祥熊, 李全华, 高滋   

  1. 复旦大学化学系
  • 收稿日期:1987-03-17 出版日期:1988-09-24 发布日期:1988-09-24
  • 通讯作者: 陈祥熊

Surface Acidity and Catalytic Activities of Zeolite CF-2

Chen Xiangxiong, Li Quanhua, Gao Zi   

  1. Department of Chemistry, Eudan University, Shanghai
  • Received:1987-03-17 Online:1988-09-24 Published:1988-09-24

摘要: CF-2是一种新型的高硅沸石。1981年我们实验室首先在二乙醇胺-甘油-Na2O-SiO2-Al2O3-H2O体系中制备成功[1],以后才见到关于Theta-1[2],ISI-1[3],KZ-2[4],NO-10[5]和ZSM-22[6]沸石的报道。

关键词: CF-2沸石, 表面酸性, 异丙苯裂解, 己烷裂解, 二甲苯异构化, 甲醇转化

Abstract: CF-2 is a novel type of highly siliceous zeolite first synthesized in laboratory from glycerine-Na2O-SiO2-Al2O3-H2O system with structure similar our to Theta-1, ISI-1, KZ-2, Nu-10 and ZSM-22. The surface acidity and catalytic activities of CF-2 zeolites with different SiO2/Al2O3 ratios have been studied. TPDresults suggest that there are two types of acid sites on CF-2. In comparison to HZSM-5, CF-2 zeolites have less acid sites and lower acid strengths. CF2 zeolites, especially the sample with low SiO2/Al2O3 ratio, show catalytic activities towards cumene and n-hexane cracking, xylene isomerization and met-hanol conversion reactions. Unlike HZSM-5, CF-2 zeolite favours dimethylether and aliphatics over aromatics in the methanol conversion reaction.

Key words: CF-2 zeolite, Surface acidity, Cumene cracking, n-Hexane cracking, Xylene isomerization, Methanol conversion

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