以乙二胺(EDA)为模板剂,采用原位固相转化法合成了ZSM-35沸石,并通过XRD对沸石晶化过程中的影响因素和晶化机理作了详细考察。结果表明,制备ZSM-35沸石适宜的硅铝摩尔比为21
Using ethylenediamine (EDA) as template agent, ZSM - 35 zeolite was prepared by in - situ solid phase transformation method. The influences on crystallization process as well as crystallization mechanism were investigated in detail by XRD method. Results showed that the proper silicon - aluminum molar ratio n (SiO2)/ n(A1203 ) for synthesis of ZSM -35 zeolite is 21 - 37; both Na^+ and EDA play a cooperative structure - orientation role in the synthesis of ZSM - 35 zeolite; suitable time for crystallization is 14 - 21 h, while extension of crystallization time tends to change ZSM - 35 zeolite into ZSM - 5 zeolite. Results of study on crystallization mechanism indicated that the synthesis process displays features of solid phase crystallization mechanism. Since both ZSM - 35 zeolite and ZSM - 5 zeolite have same secondary structural units, they are easily to transform each other in the crystallization process.