高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 462.

• 研究论文 • 上一篇    下一篇

新型磷镓分子筛的合成与表征

刘振义, 李友师   

  1. 北京大学化学系, 北京 100871
  • 收稿日期:1992-08-24 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 刘振义
  • 基金资助:

    国家自然科学基金

Synthesis and Characterization of New Type GaPO4 Molecular Sieves

LIU Zhen-Yi, LI You-Shi   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1992-08-24 Online:1993-04-24 Published:1993-04-24

PDF (PC)

被引次数

6

摘要： 以二正丙胺(DPA)和二乙胺(DEA)为模板剂,合成出两种新的磷镓分子筛。GaPO4-C和GaPO4-O。前者为立方晶系,晶胞参数α=1.1948(2)nm;后者为正交晶系,晶胞参数α=2.1192(4)nm,b=0.9738(4)nm,c=0.9225(5)nm。从FTIR分析得知GaPO4-O骨架中存在Ga-OH,而GaPO4-C则无。样品经450℃焙烧后,GaPO4-C骨架部分崩塌,GaPO4-O则全部崩塌。焙烧后样品经吸附实验证明,GaPO4-C的二次孔径在0.43～0.6nm之间,GaPO4-O的二次孔径大于0.6nm。

关键词: 磷酸镓, 合成, 表征

Abstract: Two kinds of new type gallopbosphate molecular sieves were synthesized by using dipropy-lamine (DPA) and diethylamine (DEA) as the templates.One is named GaPO4-C, and the other GaPO4-O.GaPO4-C belongs to the cubic system with the parameter of unit cell α=1.1948(2) nm.GaPO4-Obelongs to orthorhombic system with the parameters of unit cell α=2.1192(4) nm, b=0.9738(5) nm, c=0.9225(5) nm.By using IRanalysis, it was found that there is Ga-OHbond in GaPO4-Oframework and not any in GaPO4-C.After 450℃ calcinating, the framework of GaPO4-Cis partly collapsed and the framework of GaPO4-Ois wholly collapsed.The adsorption experiment of the samples after calcinating indicates that the secondary pore formed in the framework of the samples.The pore size of the secondary pore-fermed by GaPO4-Cis between 0.43-0.60 nm.The pore size of the secondary pore formed by GaPO4-Ois bigger than 0.6 nm.

Key words: Gallophosphate, Synthesis, Characterization

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