化学学报 ›› 2000, Vol. 58 ›› Issue (11): 1467-1470. 上一篇    下一篇

研究论文

硅沸石完美骨架上的吸附1: 乙胺/FAU型沸石相互 作用

杨虎;孙尧俊;平郑骅;龙英才   

  1. 复旦大学高分子科学系.上海(200433);复旦大学分析测试中心.上海(200433)
  • 出版日期:2000-11-15 发布日期:2000-11-15

Adsorption on siliceous zeolites with perfect framework 1: Interaction of ethylamine/FAU

Yang Hu;Sun Yaojun;Ping Zhenghua;Long Yingcai   

  1. Fudan University, Department of Macromolecular Science.Shanghai (200433);Fudan Univ, Ctr Anal & Measurement.Shanghai(200433);Fudan Univ, Dept Chem.Shanghai(200433)
  • Online:2000-11-15 Published:2000-11-15

采用核磁、红外、XRD研究了FAU硅沸石与吸附的乙胺之间的相互作用,XRD谱显示乙胺的吸入导致沸石晶胞收缩、对称性改变,立方变四方。^2^9SiMASNMR上,FAU硅沸石的单峰分裂成四重峰,同时骨架的红外吸收峰移向低频。这些结果表明,FAU骨架与吸附的乙胺之间存在着强烈的相互作用。

关键词: 硅, 沸石, 乙胺, 相互作用, 核磁共振谱法, 红外分光光度法

The interaction between the adsorptive ethylamine and siliceous FAU zeolite with perfect framework was investigated using XRD, ^2^9Si MAS NMR and FT-IR. As the loading of ethylamine into zeolite, the cell contracts and the symmetry transforms from cubic to tetragonal, one peak splits to four peks on ^2^9Si MAS NMR spectra, and IR adsorbence of framework shifts to lower frequency. The observation indicates that there is a strong interaction between adsorptive ethylamine and Si-O framework of FAU zeolite, leading to high A~T value of affinity index for ethylamine on the zeolite as well.

Key words: SILICON, ZEOLITE, ETHYLAMINE, INTERACTIONS, NMR SPECTROMETRY, INFRARED SPECTROPHOTOMETRY

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