钯氘化物的放氘动力学性能研究  

Kinetic Properties of Deuterium Desorption from Palladium Deuteride

作　　者：叶小球[1] 齐洪柱[2] 罗德礼[2] 郑振华[2] 朱宏志[2] 

机构地区：[1]表面物理与化学重点实验室,四川绵阳621907 [2]中国工程物理研究院,四川绵阳621900

出　　处：《稀有金属材料与工程》2013年第7期1398-1401,共4页Rare Metal Materials and Engineering

基　　金：重点实验室基金资助(902420110703)

摘　　要：在25-50℃的温度范围内，测定了钯氘化物（PdD0.5）的放氘动力学曲线。结果表明：钯氘化物在室温附近可实现快速放氘，放氘反应速率随温度升高而增加：在相同温度下，随着放氘压力接近于该温度下的放氘平衡压，放氘速率逐渐减小；钯氘化物的放氘动力学受化学吸附的氘原子在钯表面复合过程的控制，放氘反应速率常数与温度之间满足Arrhenius关系；放氘反应的活化能为30．02kJ·mol^（-1）·D2^（-1）。The kinetics curves of deuterium desorption from palladium deuteride was measured in the temperature range frm 25 to 50 ℃.The results show that deuterium could be desorbed fast from palladium deuteride around room temperature. The desorption rate increases with the increasing temperature, and decreases gradually with the deuterium pressure close to the equilibrium pressure of deuterium desorption at constant temperature. The desorption kinetics is determined by the recombination of chemisorbed deuterium atoms at the surface of palladium. The relationship between the rate constant and the temperature obeys the Arrhenius＇ law. And the activation energy of the reaction is 30.02 kJ·mol·D2^（-1）

关 键 词：PD 氢同位素 氘 动力学 

分 类 号：O615[理学—无机化学]