文献类型：期刊文献

中文题名：不同铝源与铈锆复合的性能及机制

英文题名：Properties and Mechanism of Cerium Zirconium Mixed with Different Al_2O_3 Sources

作者：韩毅[1];史运宝[1];马新胜[1];高玮[1,2]

机构：[1]华东理工大学化工学院超细粉末国家工程研究中心,上海200237;[2]上海华明高纳稀土新材料有限公司,上海201613

年份：2013

卷号：31

期号：2

起止页码：222

中文期刊名：中国稀土学报

外文期刊名：Journal of the Chinese Society of Rare Earths

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

语种：中文

中文关键词：铈锆固溶体;氧化铝;铈锆铝;高温稳定性;储氧性能;稀土

外文关键词：ceria-zirconium solid solution; Al2 03 ; Ce-Zr-Al ; thermal stability; oxygen storage capacity; rare earths

摘要：制备了CZ及CZ/AL,CZ/AS与CZ/AM(铈锆固溶体与氧化铝的复合氧化物),通过X射线衍射(XRD)、比表面(BET)、储放氧(OSC)和透射电镜(TEM)等手段对样品的晶相结构、比表面、储氧性能及微观结构等进行表征。结果表明:CZ/AL及CZ/AS都可形成单一稳定的立方晶型结构,氧化铝的掺杂可提高铈锆固溶体的比表面及耐高温稳定性,其中CZ/AS的比表面最高,CZ/AL储氧性能最大。此外,其复合机理表明,Al2O3与铈锆固溶体在纳米级别上的化学复合与纯粹的机械混合相比,前者具有更加稳定的晶型结构、更大的比表面和更好的储氧性能。
The CZ, CZ/AL, CZ/AS and CZ/AM were prepared by using pseudoboehmite and aqueous AI（NO3）3 ·9H20 as the A1203 sources with different ways of mixing, and characterized by Xray diffraction （XRD）, brunaueremmettteller （BET）, oxygen stor age capacity（OSC） and TEM analyses. It was showed that the doping of A1203 into CZ solid solution could increase the samples＇ specific surface area. thermalstability and oxygen storage capacity. The CZ, CZ/A1 and CZ/AS samples presented single cubic structure, CZ/AS showed the highest specific surface area and CZ/AL had the best oxygen storage capacity. It was also found that the samples of nanometerlevel between A1203 and （Ce, Zr）02, would show better thermal stability and higher OSC than those of samples with the micronlevel mixing.