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以P123为模板剂,正硅酸乙酯为硅源,氯化氧锆和硝酸亚铈为无机前驱盐,在不外加无机酸的条件下,利用无机前驱盐自身水解产生的弱酸性环境,通过水热合成路线一步合成了具有大的径轴比、短孔道、六方板状形貌的Zr-Ce-SBA-15介孔材料.利用粉末X射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、电感耦合等离子体原子发射光谱(ICP-AES)和氮气吸附等手段对所合成的样品进行了表征.结果表明,合成的材料具有类似于SBA-15的二维六方介孔结构,孔径、孔容和比表面积分别为5.6nm,0.96cm3/g和776m2/g.与常规SBA-15相比,这种短孔道、大径轴比的六方板状介孔材料在吸附、分离及催化等领域中能更有效地促进分子的扩散传递.
P123 as a template agent, tetraethylorthosilicate as a silicon source, zirconyl chloride and cerium nitrate as an inorganic precursor salt, without the addition of inorganic acid conditions, the use of inorganic precursor salts self-hydrolysis generated weak acidic environment, by Zr-Ce-SBA-15 mesoporous materials with large diameter ratio, short channel and hexagonal plate-like morphology were synthesized by hydrothermal synthesis route.The structure and properties of the mesoporous materials were characterized by X-ray powder diffraction (XRD), transmission electron microscopy The synthesized samples were characterized by scanning electron microscopy (SEM), inductively coupled plasma atomic emission spectrometry (ICP-AES) and nitrogen adsorption.The results show that the synthesized materials have two-dimensional hexagonal The pore structure, pore size, pore volume and specific surface area were 5.6nm, 0.96cm3 / g and 776m2 / g, respectively. Compared with the conventional SBA-15, , Separation and catalysis and other fields can more effectively promote the diffusion of molecules.