【摘要】 本文在文献的基础上,用X射线粉晶衍射,红外光谱分析,穆斯堡尔谱分析等实验方法研究了丝光沸石在800℃以上高温固—固相变过程中的结构变化。实验表明,不同离子交换的丝光沸石有不同的相变速率。在相变中,沸石水的脱去对阳离子与骨架的结合过程起了重要作用,促使硅（铝）氧四面体的形变,最终有序骨架网络变成以变形的[Si（Al）O₄]四面体为结构单元的无序网络拓朴结构的非晶固态丝光沸石。更多还原

【Abstract】 In this paper, we extend our previous work and the change of the structure of mordenite in the process of the phase transition in solid state-solid state above 800℃ were investigated by the experiment method of X-ray diffraction, infrared spectroscopy and Mossbauer spectroscopy. The experiment showed that the different cation exchange mordenite had the different velocity of the phase transition. The process of the dehydration and the binding between the cation and anion framwork played the important part in the process of the phase transition, which promotes the deformation of the unit tetrahedral. At last the ordered network framwork changed into the disordered network topology structure of the amorphous solid mordenite, the primary building unit of which was the deformed [Si（Al）O₄] tetrahedral.更多还原