高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 281.

• 论文 •    下一篇

VPI-5分子筛热相变转化成AlPO4-8的研究

徐翊华, 姚尚清, 刘新生, 庞文琴   

  1. 吉林大学合成与催化研究所, 长春, 130023
  • 收稿日期:1991-03-09 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 徐翊华
  • 基金资助:

    国家自然科学基金

Phase Transformation of Molecular Sieve VPI-5 into AlPO4-8 and the Relationship Between Both Frameworks

XU Yi-hua, YAO Shang-qing, LIU Xin-sheng, PANG Wen-qin   

  1. Institute of Synthetic and catalytic Chemistry, Jilin University, Changchun, 130023
  • Received:1991-03-09 Online:1992-03-24 Published:1992-03-24

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摘要： VPI-5是具有十八元环超大孔道的磷酸铝分子筛,在加热过程中,随着孔道中的水分子的脱除,其骨架结构转化成具有十四元环孔道的AlPO4-8分子筛。采用XRD及骨架结构模型计算等方法研究了这一相变过程,并对相变机理进行了探讨。

关键词: VPI-5, AIPO4-8, 磷酸铝分子筛

Abstract: The aluminophosphate molecular sieve VPI-5 has been received much attention as a new structure containing super-large open pores with 18 tetrahedral atoms.During the propcess of dehydration and desorption of water molecules in the channeles, the framework structure can be converted into AlPO4-8, which contains 14-membered ring open pores.The process of phase transformation was studied and the mechanism about the transformation is discussed.

Key words: VPI-5, AlPO4-8, Aluminophosphate molecular sieve

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