NdCl_3-FeCl_3-石墨层间化合物的结构表征及稳定性研究

Synthesis of NdCl_3 FeCl_3 Graphite Intercalation Compounds

采用熔盐交换法成功地合成了ＮｄＣｌ３－ＦｅＣｌ３－石墨层间化合物，采用ＸＲＤ技术对其层间结构进行了表征，结果表明所得产物为２，３，４ 阶共存的阶结构，其中３ 阶ＮｄＣｌ３－ＧＩＣ的特征层间距为１６５３．６±２．４ｐｍ 。通过扫描电镜（ＳＥＭ） 观察了其形貌的变化， 同时利用Ｘ射线能谱仪（ＥＤＳ） 测定了各元素的相对含量。分析其插入机制认为， ＦｅＣｌ３ 的存在对ＮｄＣｌ３的插入过程有所影响。同时对其在空气中的稳定性和热稳定性进行了研究。

NdCl 3 FeCl 3 GICs were synthesized by means of molten salt exchange method. The layer structures of samples were investigated by X ray diffraction (XRD). The results show that their stage structures are 2,3,4 stage co existent ones. Among them the characteristic layer distance of 3 stage NdCl 3 GIC is 1653.6±2.4pm. Through scanning electronic microscopy(SEM), the features of GIC were observed, moreover, the relative contents of the elements were measured by X ray Energy Disperse Spectroscopy(EDS). The mechanisms of NdCl 3 intercalation reaction were discussed. The stability of NdCl 3 FeCl 3 GIC was studied by thermal gravity(TG) and differential thermal analysis(DTA).