借助储氢性能测试仪和 Netzsch STA 449F3型同步热分析仪研究催化改性 Mg2 FeH6体系的放氢特性。程序升温放氢实验和等温放氢实验结果表明,添加了 TiMn2、TiAl 或 Ti 的 Mg2 FeH6样品和未添加催化剂的 Mg2 FeH6样品放氢反应动力学特征相似,反应速率有所提高,但不明显,放氢温度提前27℃左右。且催化性能 TiMn2最好,纯 Ti 其次,TiAl 较差。
The purpose of this experiment was to research the influence of TiMn2 ,TiAl,and Ti on hydrogen storage properties of Mg2 FeH 6 system,by using of hydrogen storage performance tester and Netzch STA 449F3 thermalanalyser.The results of TPD and isothermal hydrogen desorption test indicate that TiMn2/TiAl/Ti-doped and unalloyed Mg2 FeH 6 have the similar desorption kinetics of the hydrogen storage.The reaction rate of doped Mg2 FeH 6 was a little higher,but not much.The above catalyst can decrease the endothermic peak tem-perature about 27 ℃.And the catalytic performance of TiMn2 was the best,pure Ti was the better,TiAl was the worst.
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