高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (10): 1052.

• 研究论文 • 上一篇    下一篇

甲胺体系硅磷铝分子筛结晶行为及理化性能的研究

贺鹤勇, 潘思忠, 张羚, 曹永文, 高滋   

  1. 复旦大学化学系
  • 收稿日期:1989-01-26 出版日期:1990-10-24 发布日期:1990-10-24
  • 通讯作者: 高滋, 邮编: 200433

Studies on Crystallization and Properties of Silicophosphoaluminate Molecular Sieves in Methylaminc System

He Heyong, Pan Sizhong, Zhang Ling, Cao Yongwen, Gao Zi   

  1. Department of Chemistry, Fudun University, Shanghai
  • Received:1989-01-26 Online:1990-10-24 Published:1990-10-24

摘要: 研究了CH3NH2-SiO2-P2O5-Al2O3-H2O体系的水热结晶行为,得到了在SiO2:Al2O3:H2O=0.4:1:40(摩尔比)时CH3NH2、P2O5和Al2O3组成变化对分子筛结晶相影响的三元相图,发现了CFSAPO-1和CFSAPO-2两种分子筛。合成了一组含硅量不同的CFSAPO-1样品,利用XRD、IR、DTA、吸附和NH3-TPD等方法进行了理化性能测定,发现进入骨架的Si等比地取代P和Al。

关键词: 分子筛, 三元相图, 骨架

Abstract: The hydrothcnnal crystallization behaviour of CH3NH2-SiO2-P2O5-Al2O3-H2O system was investigated at 150℃ under autogenous pressure and a ternary phase diagram with the apices of the triangle representing pure CH3NH2, P2O5 and Al2O3 was obtained, which shows the effect of the composition changes of CH3NH2, P2O5 and Al2O3 on the crystalization phase when in the reaction mixture the molar ratio of SiO2 : Al2O3 : H2O=0. 4: 1 : 40. Two silicophosphoaluminate molecular sieves,CFS-APO-1 and CFSAPO-2, were found to be formed from the system. The physicochemical properties of CFSAPO-1 samples containing different amout of silicon were studied with XRD, DTA, TG,IR, NH3-TPD and adsorption methods. It is found that the framework Pand Al were substituted congruent-ly by silicon.

Key words: Molecular sieve, Ternary phase diagram, Framework

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