【作者】 张晓敏；

【导师】 吴鹏； 刘月明；

【作者基本信息】 华东师范大学 ， 物理化学， 2008， 硕士

【摘要】 第一部分:ZSM-5沸石分子筛由Mobil公司的科学家首次合成,具有高度水热稳定性和强的耐酸性,在工业上具有广泛应用。ZSM-5分子筛三维骨架中包含两种交叉的十元环通道,一种是走向平行于[001]的正弦孔道,孔径为0.54×0.56nm,另一种是平行于[010]的直线型孔道,具有0.51×0.57nm的椭圆开口,其孔道开口居于较小的八元环和较大的十二元环之间,孔道交联处直径约为0.9nm。最初采用四丙基氢氧化铵为模板剂合成ZSM-5分子筛,后来逐渐发展为有机胺作为模板剂合成ZSM-5分子筛。但据我们文献调研,到目前为止,还没有采用环状化合物六亚甲基亚胺（HMI）为模板剂合成ZSM-5分子筛的报道。我们就采用HMI为模板剂或不用模板剂,添加少量活性晶种的条件下分别合成ZSM-5分子筛。在碱金属离子存在下,以发烟硅胶为硅源,以环状化合物HMI为模板剂或不用模板剂,在添加少量活性晶种的条件下,研究ZSM-5分子筛合成的新方法。在合成中发现,晶种的选择和添加是该合成成功与否的关键因素。同时也考察了其它合成条件如:Si/Al比,Na/Si比,HMI/Si比,H₂O/Si比,硅源,铝源,碱金属钠盐和合成时间等对ZSM-5分子筛结晶度和形貌的影响。研究表明,合成条件对ZSM-5分子筛的结晶度和晶粒尺寸产生明显的影响。第二部分:掺铒光纤放大器（EDFA）是通信系统中不可缺少的器件,合成掺铒光纤材料是当今很热的课题。在合成发光材料时,需要挑选合适的基质材料负载稀土元素,才能使稀土元素的发光效果好。本论文在考虑到基质材料本身的物理性质和光学性质,先后选了两种不同种类的分子筛作为基质,然后在材料中加入修饰剂对稀土元素进行修饰,以期得到一种发光性能良好的复合材料。在实验中,我们考察了两种分子筛（Y型分子筛,SBA-15介孔分子筛）对材料发光性能的影响,结果发现,这两种分子筛作为基质得到的材料吸收光谱图一致,但是经过荧光光谱测试发现,以Y型分子筛作为基质的没有荧光现象,以SBA-15介孔分子筛作为基质的有良好的荧光效果。我们用功能化试剂全氟甲基酰胺（bis-（perfluoromethylsulfonyl）-amine）PMS对稀土元素Er³⁺进行修饰,发现修饰后材料的荧光强度提高了数倍。更多还原

【Abstract】 Part One:ZSM-5,a high silica zeolite developed by Mobil Corporation,has found various industrial applications because of its high thermal stability and strong acid stabilities.ZSM-5 is a ten-membered ring zeolite structure made up of two types of straight and zig-zag channel systems.The straight channels have a circular opening of 0.53×0.56 nm and the zig-zag ones have an elliptical opening of 0.51×0.55 nm. ZSM-5 was firstly synthesized using expensive tetrapropylammonium hydroxide （TPAOH）solution.Thereafter,the same structure was synthesized using several different organic templates.Up to now,there has no report on the synthesis ZSM-5 using cyclic amine as a structure-directing agent（SDA）.In this work,ZSM-5 zeolite is skillfully hydrothermally synthesized from an inorganic silica source and hexamethyleneimine（HMI）as an SDA)（or without any SDA）with the assistant of active seeds of ZSM-5 precursor and alkali metal ions.The addition of a precursor gel containing the primary and secondary building units of MFI structure is the key step of the synthesis.The nature of precursor and the preparation conditions have great influence on the incorporation of silica into the framework.Other synthesis parameters such as silica sources,aluminium sources, crystallization time,Si/Al ratio,HMI/Si ratio,Na/Si ratio and H₂O/Si ratio have been investigated in detail.It is revealed that the crystallinity and crystal size were affected greatly by the synthesis conditions.Part Two:Erbium-doped Optical Fiber Amplifier（EDFA）is an essential part in communication systems.The fabrication of EDFA is a hot subject.During the fabrication,the proper support is needed to load rare earth to gain better luminescence. Considering the physical and optical properties of the support,we tested two different types of porous materials which were then modified to obtain the compounds with good luminescence.Both the supports of Y zeolite and SBA-15 showed the same absorption spectra,but showed different fluorescence spectra.Fluorescence was observed only on Er/SBA-15 compound.We modified the rare earth compound further with bis-（perfluoro methyl sulfonyl）-amine and achieved improved fluorescence.更多还原