硅沸石完美骨架上的吸附1: 乙胺/FAU型沸石相互 作用

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。

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

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.