高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (5): 561.

• 论文 •    下一篇

一种新颖的十八元环超大孔分子筛骨架拓扑结构CJU-18的设计

徐翊华, 张丽萍, 徐如人   

  1. 吉林大学合成与催化研究所, 长春, 130023
  • 收稿日期:1991-05-01 出版日期:1992-05-24 发布日期:1992-05-24
  • 通讯作者: 徐翊华
  • 基金资助:

    国家自然科学基金

The Design for a Novel Topological Structure of Sieve CJU-18 with Super-Large 18 Membered Ring Open Pores

XU Yu-hua, ZHANG Li-ping, XU Ru-ren   

  1. Institute of Synthetic and Catalytic Chemistry, Jilin University, Changchun, 130023
  • Received:1991-05-01 Online:1992-05-24 Published:1992-05-24

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被引次数

2

摘要： 提出了一种新颖的十八元环超大孔分子筛的拓扑结构模型——CJU-18,它属钙霞石笼作用于六方晶系的P63/mmc空间群.与VPI-5类似,具有平行于c方向的十八元环直孔道结构,但侧面有十元环孔道,通过计算该结构模型各原子间的键长、键角,认为该结构有可能存在,采用POWD-MODELING程序,计算了它的理论XRD谱图并绘制出其立体拓扑结构。

关键词: CJU-18, 超大孔分子筛, 骨架拓扑结构, 钙霞石笼

Abstract: A novel topological framework structure of the molecular sieve named CJU-18 is obtained theoretically, which has 18 membered ring open pores.The structure is formed by the assemblage of the second building units: cancrinite cage, according to the hexagonal space groups P63/mmc.It has not only the 18-ring pore channel system which parallels to the c-axis as in VPI-5, but also 10-ring pore channel system along both a and b-axis.The results obtained from calculating the bond distances and angles between the atoms show that the structure may probably exist.By using the POWD-MODELING program and the X-ray powder diffraction pattern the topological structure is described.

Key words: CJU-18, Extra large pore molecular sieve, Topological framework structure, Can-crinite cage

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