【作者】 黄刚； 曹小华； 龙兴贵； 杨本福； 刘文科；

【Author】 HUANG Gang, CAO Xiao-hua, LONG Xing-gui, YANGBen-fu, LIUWen-ke,Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China

【机构】 中国工程物理研究院核物理与化学研究所；

【摘要】 在高真空金属系统上测定了氢化钛和氘化钛在恒容体系和350℃-550℃范围内热解吸氢和氘的P-t曲线,并应用反应速率分析方法计算了各自在不同温度的速率常数,得到氢化钛热解吸氢的表观活化能为27.1±0.4kJ/mol,氘化钛热解吸氘的表观活化能为42.3±1.9kJ/mol。氘化钛解吸氘的表观活化能高于氢化钛解吸氢的表观活化能,表现出显著的解吸动力学同位素效应,表明氘化钛解吸时需要更高的初始能量,从另一个侧面也证明了氘化钛在相同条件下比氢化钛更稳定。更多还原

【Abstract】 P-t curves of titanium hydride and titanium deuteride desorbing hydrogen and deuterium were investigated at the 350-550℃ by using the method of the reaction rate analysis in a constant volume system. The rate constants of titanium hydride desorbing hydrogen and titanium deuteride desorbing deuterium on different temperature are determined and the activation energy value obtained by this analysis are 27. 1 ± 0. 4kJ/mol and 42. 3 ± 1. 9kJ/mol respectively. The activation energy value of titanium deuteride desorbing deuterium is higher than that of the activation energy value of titanium hydride desorbing hydrogen. There are remarkable desorbing kinetics isotope effects and it also can prove that titanium deuteride is steadier than titanium hydride .更多还原