【摘要】 为研究制备工艺条件对三氢化铝（AlH₃）的晶型及性能的影响，采用LiAlH₄还原AlCl₃合成AlH₃乙醚络合物，通过控制AlH₃乙醚络合物的结晶条件制备了α、γ、α′3种不同晶型的AlH₃，并采用扫描电镜（SEM）、X射线衍射（XRD）及差示扫描量热法（DSC）对3种晶型AlH₃的晶体形貌、热稳定性和安全性能进行了测试。结果表明：所制备的AlH₃样品颗粒均匀、形貌完整；α-AlH₃晶型纯度高，热稳定性和安全性相对较好。更多还原

【Abstract】 In order to study the effect of preparation process conditions on the crystal form and properties of aluminum hydride（AlH₃）, AlH₃ ether complex was synthesized by reducing AlCl₃ with LiAlH₄, and α, γ, α′ AlH₃ with 3 different crystal forms were obtained by controlling crystallization conditions of AlH₃ ether complex. The crystal morphology, thermal stability and safety of 3 crystal forms of AlH₃ were tested by scanning electron microscopy（SEM）, X-ray diffraction（XRD） and differential scanning calorimetry（DSC）. The results show that the AlH₃ samples prepared have uniform particles and complete morphology; α-AlH₃ crystal form has high purity, relatively good thermal stability and safety.更多还原