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不用有机胺为模板剂,在碱性介质中采用水热合成法成功地合成了[Fe]ZSM-5分子筛.用X射线衍射、透射电镜、红外光谱、顺磁共振谱、X射线光电子能谱和穆斯堡尔谱等对其结构进行了表征,结果表明,Fe原子进入了分子筛骨架,并处于四面体的配位环境.在由甲醇转化为汽油的过程中,以本文合成的[Fe]ZSM-5与用有机胺为模板剂合成的[Fe]ZSM-5分子筛为催化剂相比,其活性和选择性几乎相同,且都比通常的H[Al]ZSM-5好,C_5组分以上的选择性大于80％,且芳烃(包括脂环烃)和异构烃的含量达75％以上.
[Fe] ZSM-5 zeolite was successfully synthesized by hydrothermal synthesis in alkaline medium without using organic amine as templating agent.Using X-ray diffraction, transmission electron microscopy, infrared spectroscopy, paramagnetic resonance spectroscopy, X-ray photoelectron spectroscopy And Mossbauer spectroscopy were used to characterize their structures. The results show that the Fe atom enters into the framework of the molecular sieve and is in the coordination environment of tetrahedron. In the conversion of methanol to gasoline, the [Fe] The activity and selectivity of ZSM-5 were almost the same as that of [Fe] ZSM-5 zeolite synthesized by using organic amine as templating agent and both were better than the usual H [Al] ZSM- Selectivity is greater than 80%, and aromatic (including alicyclic hydrocarbons) and isomerized hydrocarbons content of more than 75%.