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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.~(29)Si MAS NMR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.
The interaction between the FAU silicalite and the adsorbed ethylamine was studied by using NMR, IR and XRD. The XRD spectra showed that the ethylamine inhalation led to shrinkage of the unit lattice of zeolite, symmetry change and cubic transformation. , The unimodal splitting of the FAU silicalite into a quartet and the shift of the infrared absorption peak of the framework to low frequencies showed that there was a strong interaction between the FAU framework and the adsorbed ethylamine.