Synthesis and characterisation of zeolite LTA with sheet structure

[摘要] This work reports a simple and effective method for the rapid synthesis of zeolite Linde Type A (LTA) with sheet structure from kaolin. X-ray diffraction results confirm the purity and crystallinity of the synthesised zeolite LTA with sheet structure. Transmission electron microscopy images clearly show the sheet-like structure of the synthesised zeolite LTA. The selected area electron diffraction pattern indicates that the crystal structure type of the synthesised zeolite LTA with sheet structure is the body-centred cube. Meanwhile, the elemental mapping confirms the coexistence and uniform distribution of Si, Al, O and Na elements in the lamellar structure of the synthesised zeolite LTA. In addition, N 2 adsorption–desorption technique indicates that the surface area of the synthesised zeolite LTA with sheet structure increases up to 39.7994 m 2 ·g −1 , a much higher value than that of zeolite LTA.

[学科分类] 计算机科学（综合）

[关键词] desorption;zeolites;electron diffraction;adsorption;crystal structure;transmission electron microscopy;X-ray diffraction;nitrogen;materials preparation;zeolite Linde type A;crystal structure;kaolin;X-ray diffraction;crystallinity;transmission electron microscopy;selected area electron diffraction pattern;body-centred cube sheet structure;elemental mapping;lamellar structure;N2 adsorption-desorption;surface area;N2