0,1,3维CeO_2的可控制备及CuO/CeO_2催化剂上CO氧化反应(英文)  

Synthesis of Zero,One,and Three Dimensional CeO_2 Particles and CO Oxidation over CuO/CeO_2

作　　者：单文娟[1] 刘畅[1] 郭红娟[1] 杨利华[1] 王晓楠[1] 冯兆池[2] 

机构地区：[1]辽宁师范大学化学化工学院功能材料化学研究所,辽宁大连116029 [2]中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

出　　处：《催化学报》2011年第8期1336-1341,共6页

基　　金：supported by the National Natural Science Foundation of China(20603016);the National Basic Research Program of China(973Program,2009CB220010);the Scientific Research Fund of Liaoning Provincial Education Department(L2010222);the Liaoning Provincial Science&Technology Project of China(20071074)~~

摘　　要：以水、乙醇和乙二醇为溶剂,采用溶剂热法可控制备了0,1,3维CeO2.结果表明,0维CeO2由0.2～0.5μm纳米粒子组成;1维CeO2是直径为25～30μm,长约500μm的六方棒;松针型的3维CeO2是由以纳米粒子为单元构成的直径为1～5μm,长约50μm的光滑棒组成,其比表面积高达234m2/g.将0,1,3维CeO2负载的CuO催化剂用于CO氧化反应中,发现以1维和3维CeO2为载体时,CuO催化剂具有较大的比表面积和较强的表面还原性,因而表现出较高的催化活性.A method to synthesize zero,one,and three dimensional（0D,1D,3D）CeO2 from single crystal cerium formate by a surfac-tant-free route using H2O,ethanol and ethylene glycol as solvents is shown.0D CeO2 was composed of aggregated particles of 0.2-0.5 μm.1D CeO2 was hexagonal rods that were 25-30 μm in width and more than 500 μm in length.The pine needle shaped 3D CeO2 was assembled from smooth rods of 1 to 5 μm diameter and up to 50 μm length that had CeO2 nanoparticles as building units to give 3D mi-cro/nanocomposite structures with a high BET surface area of 234 m2/g.Both 5 wt% CuO/1D CeO2 and 5 wt% CuO/3D CeO2 exhibited high catalytic activities for CO conversion due to the high BET surface area and the facile reducibility of surface CeO2.

关 键 词：氧化铈 氧化铜 一氧化碳 氧化 纳米结构 拉曼光谱 

分 类 号：O643.32[理学—物理化学]