介孔二氧化铈材料的合成与表征  

Synthesis and Characterization of Mesoporous Ceria Material

作　　者：于强强[1] 刘玉良[1] 何涛[1] 索掌怀[1] 

机构地区：[1]烟台大学应用催化研究所,山东烟台264005

出　　处：《烟台大学学报（自然科学与工程版）》2010年第3期172-175,203,共5页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(20473070;20973148);山东省科技攻关计划资助项目(2009GG10007022)

摘　　要：采用聚合物P123为模板剂、正硅酸乙酯为硅源水热成功合成了具有介孔、二维六角结构的SBA-15,并以SBA-15为硬模板、蔗糖为碳源合成了具有有序介孔结构的CMK-3碳材料.将CMK-3浸渍于硝酸亚铈溶液中,经过干燥、焙烧,制备出了具有二维六角结构的二氧化铈材料.利用N2物理吸附、X光粉末衍射(XRD)、透射电镜(TEM)对所得材料进行了物化性质测试与结构表征.结果表明,合成的二氧化铈具有面心立方结构,呈现IV型吸-脱附等温线及H3型滞后环,孔径分布均一,平均孔径3.3 nm,其比表面积达104.2 m2/g.SBA-15 mesoporous material is synthesized by using P123 triblock copolymers as templates and then mesoporous carbon material with CMK-3 structure is synthesized by using SBA-15 as templates.Mesoporous ceria material is synthesized by using CMK-3 carbon as a structure matrix.The obtained materials are characterized by nitrogen physisorption,X-ray diffraction,and transmission electron microscopy.The results show that the ceria material exhibits uniform pores with a diameter of ca.3.3 nm in a two-dimensional hexagonal periodic arrangement and the specific surface area is about 104.2 m2·g-1.

关 键 词：SBA-15 CMK-3介孔碳 介孔二氧化铈 合成与表征 

分 类 号：O414.33[理学—理论物理]