Pd/PdO循环氧化还原过程特性研究  

Oxidation/Reduction Cyclic Property of Pd/PdO

作　　者：蒲健[1] 梁凤丽[1] 华斌[1] 颜冬[1] 池波[1] 李箭[1] 

机构地区：[1]华中科技大学、材料成形及模具技术国家重点实验室,湖北武汉430074

出　　处：《稀有金属材料与工程》2010年第8期1395-1398,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50571038);湖北省自然科学基金(2006ABA086)

摘　　要：应用热重和高温X射线衍射技术,研究了Pd/PdO的高温循环氧化还原过程,并考察了添加少量Mn对其高温热稳定性的影响。结果表明:PdO在一个确定的温度将会急剧分解为金属Pd,其分解温度与粉体粒度无关。Pd/PdO是否出现循环氧化特征将取决于Pd粉的分散状态,加入适量的Mn将会改变Pd/PdO的高温热稳定性和循环氧化特征。The high-temperature oxidation/reduction cycle of Pd/PdO was investigated by high-temperature X-ray diffraction and thermogravimetric technique.Moreover,effects of minor Mn addition on the thermal stability of Pd/PdO were also studied.The results show that PdO will decompose to metal Pd sharply at a certain temperature,and the decomposition temperature is independent of powder granularity.The dispersion state of Pd powder decides the hysteresis characteristics of the phase transition Pd/PdO.Proper Mn addition can change the high temperature thermal stability and hysteresis curve of Pd/PdO system.

关 键 词：PD 热稳定性 氧化还原 

分 类 号：TM911.4[电气工程—电力电子与电力传动]