多级复合孔硅铝材料的合成与表征  

Synthesis and Characterization of the Hierarchical Porous Aluminosilicate Material

作　　者：徐玲[1] 阚秋斌[2] 

机构地区：[1]内蒙古民族大学化学化工学院 [2]吉林大学化学学院,长春130021

出　　处：《应用化学》2011年第4期478-482,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(20673046)资助项目;内蒙古自治区高等学校科研项目(NJzy08084)

摘　　要：采用表面包覆聚电解质的聚苯乙烯小球为模板,制备多级复合孔硅铝材料前体。经水热晶化处理后焙烧脱模板,获得了多级孔结构的硅铝分子筛材料。通过X射线衍射、傅里叶红外光谱、N2吸附-脱附、扫描电子显微镜和透射电子显微镜等测试技术对水热晶化不同时间的硅铝材料进行表征。探讨了水热晶化时间对材料孔道结构的影响。结果表明,水热晶化时间小于22 h,样品中含有介孔-大孔双连续孔道体系。晶化时间超过22 h,样品中含有微孔-介孔-大孔多级孔道体系。晶化36 h的样品,大孔孔壁由纳米级ZSM-5型沸石分子筛晶体构成。The hierarchical porous aluminosilicate material was obtained by hydrothermal treatment and calcination of the precursor prepared using polystyrene spheres coated with polyelectrolyte as the template.The hierarchical porous materials were characterized by XRD,FT-IR,N2 adsorption-desorption,SEM and TEM.In addition,the influence of crystallized time on the porous structures was studied.The results show that the material contained meso-macropore with hydrothermal treatment of less than 22 h.However,the sample exhibits micro-meso-macroporous structures when the crystallized time was more than 22 h.In particular,the XRD and SEM results exhibit that the wall of macro-pore was composed of nano-ZSM-5 zeolite when the sample was crystallized for 36 h.

关 键 词：多级复合孔 硅铝材料 层叠层自组装 

分 类 号：O611[理学—无机化学]