模板剂对天然丝光沸石制备介孔材料的影响

以天然丝光沸石为原料,三正丁胺和三乙胺为模板剂,在碱性条件下,采用水热法制备介孔材料。利用X射线衍射仪(XRD)、比表面积测定仪(N2吸附脱附)、扫描电子显微镜(SEM)对样品进行表征,研究了模板剂对天然丝光沸石制备介孔材料的孔结构、形貌及性能参数的影响。结果表明,两种模板剂制备的介孔材料均较好的保留了丝光沸石的晶体结构,孔径主要分布于2~10 nm之间,孔型为片状颗粒堆积形成的狭缝孔。以三乙胺为模板剂制备的介孔材料性能较好,比表面积达到18.785 m2/g、平均孔径为13.495 nm、孔容为0.0844 cm3/g。

Influence of Template on the Preparation of Mesoporous Materials with Natural Mordenite

Mesoporous material was prepared with tributylamine and triethylamine as template using hydrothermal method under alkaline conditions, in which natural mordenite was used as silica-alumina source. The pore structure, micro morphology and characteristic parameter of mesoporous material were characterized by X-ray diffraction (XRD), specific surface area analyzer (N2 adsorption-desorption) and scanning electron microscopy (SEM). The results showed that mesoporous material prepared by two kinds of template retains the crystal structure of mordenite, the pore size mainly distributed in 2~10 nm, the type of the pore is slit pore packing by flaky particles. Mesoporous material has better performance by using triethylamine as template, the specific surface area is 18.785 m2/g, the average pore size is 13.495 nm and the pore volume is 0.0844 cm3/g.