【作者】 马静萌； 应跃芳； 何迈； 方萍； 罗孟飞； 王月娟；

【Author】 Ma Jingmeng, Ying Yuefang, He Mai, Fang Ping, Luo Mengfei, Wang Yuejuan (Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces , Institute of Physical Chemistry, Zhejiang Normal University , Jinhua 321004 , China )

【机构】 浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室；

【摘要】 以3种表面活性剂(阳离子型表面活性剂CTAB,阴离子表面活性剂十二烷基硫酸钠和非离子嵌段型表面活性剂P123)为模板剂, Ce(NO3)3作为前驱体,制备了CeO2。考察了不同沉淀剂(尿素,氨水,NaOH和Na2CO3)的影响。结果表明,表面活性剂的性质对CeO2的比表面和孔结构的影响较大。发现采用CTAB为模板剂,以氨水为沉淀剂,经高温焙烧后制得的CeO2,具有高比表面的介孔结构,比表面积大于 160 m2·g-1,孔径在8 nm左右,孔分布较窄。更多还原

【Abstract】 The synthesis of ceria using different surfactants including CTAB, P123 and sodium dodecyl sulfate with Ce(NO3)3 as precursor was studied. The effect of different precipitators including urea, ammonia, NaOH and Na2CO3 was investigated. The property of surfactant has obvious effect on the surface area and the pore structure of CeO2. It is found that using a cationic surfactant ( CTAB ) as templating agent with ammonia as precipitator after drying and calcination results in high surface area mesostructured CeO2. Surface area is in excess of 160 m2·g-1, and pore size is about 8 nm.更多还原