摘要
采用机械球磨法制备了掺杂活性炭(AC)的LiAlH_(4)轻金属氢化物材料;采用差热分析(DSC)、X射线衍射(XRD)、扫描电镜(SEM)等手段对制备的材料进行分析表征;并采用程序升温脱附装置(TPD)和PCT对材料放氢动力学性能进行了研究.研究表明,活性炭掺杂将LiAlH_(4)的起始放氢温度从150℃降低到90℃,提高了其放氢动力学性能,并明显降低了LiAlH_(4)第一步和第二步放氢反应的活化能.
In the present work,dehydrogenation behavior of LiAlH_(4)(lithium alanate) doped with activated carbon has been investigated by pressure-composition-temperature,temperature programmed desorption,differential scanning calorimetry and X-ray Diffraction.The addition of activated carbon decreases the dehydrogenation temperature and enhances dehydrogenation kinetics of LiAlH_(4).The onset decomposition temperature of doped LiAlH_(4) sample is reduced to 90 ℃,which is much lower than that of 150 ℃ for pure LiAlH_(4).The doping of activated carbon also effectively reduces the activation energy for the first and the second dehydrogenation reactions of LiAlH_(4).
作者
臧磊
蔡嘉兴
赵李鹏
刘剑
Zang Lei;Cai Jiaxing;Zhao Lipeng;Liu Jian(School of Materials Science and Engineering,Nankai University,Tianjin 300350,China)
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第4期59-65,73,共8页
Acta Scientiarum Naturalium Universitatis Nankaiensis
基金
Supported by NNSF (4039)。
