脱醚转晶方法对α-AlH_(3)的影响  

Effect of De-etherization and Crystal-Form Transition on Properties ofα-AlH_(3)

作　　者：冯连芳[1] 刘浏[1,2] 胥师铭 顾雪萍 FENG Lianfang;LIU Liu;XU Shiming;GU Xueping(College of Chemical and Biological Engineering,Zhejiang University,Hangzhou,Zhejiang310058,China;Institute of Zhejiang University-Quzhou,Quzhou,Zhejiang 324000,China)

机构地区：[1]浙江大学化学工程与生物工程学院,浙江杭州310058 [2]浙江大学衢州研究院,浙江衢州324000

出　　处：《浙江化工》2024年第12期18-22,共5页Zhejiang Chemical Industry

摘　　要：三氢化铝(AlH_(3))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AlH_(3)。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AlH_(3)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%。Aluminium trihydride(AlH_(3))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 AlH_(3) was prepared by de-etherization and crystal-form transition by three different methods.The properties of AlH_(3) prepared 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 mainlyαforms,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%.

关 键 词：α-AlH_(3) 氢化物 脱醚 转晶 

分 类 号：TQ133.1[化学工程—无机化工]