高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (7): 893.

• 研究论文 • 上一篇    下一篇

磷酸硅锌铝分子筛(ZnAPSO-5)的合成、结构及性能研究

韩淑芸, 车志岩   

  1. 青岛大学化学系, 青岛 266071
  • 收稿日期:1992-09-22 修回日期:1993-02-15 出版日期:1993-07-24 发布日期:1993-07-24
  • 通讯作者: 韩淑芸
  • 作者简介:第一作者:女, 57岁, 教授.

Studies on the Synthesis, Structure and Properties of Zinc Silicoaluminophosphate Molecular Sieve

HAN Shu-Yun, CHE Zhi-Yan   

  1. Department of Chemistry, Qingdao University, Qingdao, 266071
  • Received:1992-09-22 Revised:1993-02-15 Online:1993-07-24 Published:1993-07-24

PDF (PC)

被引次数

20

摘要： 以二乙氨基乙醇为导向剂,用水热晶化法合成了磷酸硅锌铝分子筛纯相,测定其组成为Zn1.12Si0.38Al10.88P11.62O48,并对其结构和性能进行了研究.实验结果表明,ZnAPSO-5具有AlPO4-5型分子筛结构,由于锌和硅进入骨架同晶取代了部分铝和磷,致使ZnAPSO-5分子筛有了B酸酸性,而热稳定性也较磷酸锌铝分子筛(ZAPO-5)有所提高.

关键词: 分子筛, 磷酸铝盐, 锌, 硅

Abstract: The pure zinc silicoaluminophosphate molecular sieve (ZnAPSO-5) was synthesized in the presence diethylaminoethanol as a template by hydrothermal crystallization.The chemical composition and parameters of the unit cell of ZnAPSO-5 were determined.The structure of ZnAPSO-5 has been studied by means of X-ray diffraction analysis, scanning electron microscopy, infrared spectra, X-ray photoelectron spectroscopy (XPS).The thermal stability and surface acidity of ZnAPSO-5 were investigated.The results showed that the atoms of zinc and silicon entered into the framework of ZnAP-SO- 5 molecular sieve and that isomorphous replacements of aluminium by zinc and phosphorus by silicon make the framework carry negative charge but it has been balanced by H+.Therefore, ZnAPSO-5 exhibits the property of Bronsted acid.

Key words: Molecular sieve, Aluminophosphate, Zinc, Silicon

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