【摘要】 三氢化铝（AlH₃）是一种理想的储氢材料。以氢化铝锂和氯化铝为原料，采用湿法化学法合成了三氢化铝醚合物，并通过3种不同方法对其进行脱醚转晶制备AlH₃。通过X射线衍射仪、扫描电镜、同步热分析仪、红外光谱对3种方法制备的AlH₃各项性能进行系统研究。研究表明，3种方法制备的产物晶型均以α型为主，产率均高于80%；化学结构相似，热分解性质相当；采用液体甲苯法制备的产物粒径相对较大，约为10μm，但纯度仅为90%。更多还原

【Abstract】 Aluminium trihydride （AlH₃） is an ideal material for hydrogen storage.Aluminum hydride trihydride was synthesized by wet chemical method using lithium aluminum hydride and aluminum chloride as raw materials,and AlH₃was prepared by de-etherization and crystal-form transition by three different methods.The properties of AlH₃prepared by three methods were systematically studied by X-ray diffraction,scanning electron microscope,synchronous thermal analyzer and infrared spectroscopy.The results show that the crystal forms of the products prepared by the three methods are mainly α forms,and the yields are higher than 80%.The chemical structures are similar,and the thermal decomposition properties are comparable.The liquid toluene method produces a relatively large particle size of about 10μm,but the purity is only 90%.更多还原