AlH_(3)晶型控制与性能研究  

Study on Crystallization Control and Properties of AlH_(3)

作　　者：关智航 张思 陈克海[1] 朱朝阳[1,2] 肖金武 邱贤平[1,2] GUAN Zhi-hang;ZHANG Si;CHEN Ke-hai;ZHU Zhao-yang;XIAO Jin-wu;QIU Xian-ping(Hubei Institute of Aerospace Chemical Technology,Xiangyang,441003;Science and Technology on AerospaceChemical Power Laboratory,Xiangyang,441003)

机构地区：[1]湖北航天化学技术研究所,湖北襄阳441003 [2]航天化学动力技术重点实验室,湖北襄阳441003

出　　处：《火工品》2023年第2期58-61,共4页Initiators & Pyrotechnics

基　　金：国家自然科学基金(No.22005090)。

摘　　要：为研究制备工艺条件对三氢化铝(AlH_(3))的晶型及性能的影响,采用LiAlH_(4)还原AlCl_(3)合成AlH_(3)乙醚络合物,通过控制AlH_(3)乙醚络合物的结晶条件制备了α、γ、α′3种不同晶型的AlH_(3),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AlH_(3)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AlH_(3)样品颗粒均匀、形貌完整;α-AlH_(3)晶型纯度高,热稳定性和安全性相对较好。In order to study the effect of preparation process conditions on the crystal form and properties of aluminum hydride(AlH_(3)),AlH_(3) ether complex was synthesized by reducing AlCl_(3) with LiAlH_(4),andα,γ,α′AlH_(3) with 3 different crystal forms were obtained by controlling crystallization conditions of AlH_(3) ether complex.The crystal morphology,thermal stability and safety of 3 crystal forms of AlH_(3) were tested by scanning electron microscopy(SEM),X-ray diffraction(XRD)and differential scanning calorimetry(DSC).The results show that the AlH_(3) samples prepared have uniform particles and complete morphology;α-AlH_(3) crystal form has high purity,relatively good thermal stability and safety.

关 键 词：三氢化铝 晶型控制 结晶条件 热稳定性 安全性 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ560.5[化学工程—炸药化工]