Influence of neodymia doping on the oxygen storage capacity of CeO2-ZrO2 mixed oxides
Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 4
Abstract
The CeO2-ZrO2 mixed oxides with different doping amount of Nd2O3 were prepared by co-precipitation. The structure and textural properties were characterized by XRD, BET, and EPR techniques, while the OSC performance was evaluated under both dynamic and static condition at 500 ℃. The insertion of Nd into the CZ lattice causes the deformation of the crystal lattice, leads to the phase transition from tetragonal structure to pseudo cubic one. The proper doping amount of Nd introduces more Ce3+ in both the fresh and aged samples, which promotes the OSC of CZ.
Authors and Affiliations
Duan Weng , Lei Wang , Xiaodong Wu, Xiaodi Wu
Keywords
Related Articles
- EP ID EP102310
- DOI -
- Views 110
- Downloads 0
剪切盒加载下岩石断裂特征的有限元分析
本文介绍Ⅱ型断裂的研究现状，指出对于脆性岩石，并非Ⅱ型加载必定会产生对应的Ⅱ型断裂，借鉴剪切盒加载限制岩石发生Ⅰ型断裂，从而实现真正意义上的Ⅱ型断裂，并利用有限元方法分析在Ⅱ型加载下岩石裂纹尖端的应力场，探讨了岩石在Ⅱ型加载下...
Study on mechanical behavior of frame-supported transfer beam
To deeply understand the transfer beam’s stress characteristics and to propose the criterion of the eccentric-tensional-beam, tests of two one-forth-scale specimens under cyclic load reversals were implemented. Based on...
基于最优小波包基改善高速长输信号的完整性
为了解决理想无损传输线理论在分析高速信号长距离输送时的不适用性的问题，将信号衰减因子引入高速长输信号的反射和串扰分析。围绕由不确定环境骚扰、反射和串扰噪声所引出的高频数字信号的完整性问题，通过对将自底向顶和深度优先相结合...
湛江地区土壤硫沉降和氮沉降临界负荷区划
在地理信息系统支持下，用稳态法进行了湛江地区土壤的硫沉降临界负荷和氮沉降临界负荷区划。按照硫沉降临界负荷可粗略地将湛江地区划分为北部、中部和南部三部分：北部针叶林和针阔混交林地区以及南部栽培植被地区的硫沉降临界负荷较大(...
一种新型的毫米波谐振系统
提出一种新型的毫米波谐振系统，该系统由基片集成波导谐振器与多个λ/4驻波谐振器通过磁耦合而成为一个整体。多个λ/4谐振器的谐振频率与相位受基片集成波导谐振器控制。这种毫米波谐振系统的优点是：损耗小，品质因数高，与晶圆级封装( wa...