The investigation of order-disorder transition process of ZSM-5 induced by spark plasma sintering
The investigation of order-disorder transition process of ZSM-5 induced by spark plasma sintering
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DOI：
10.1016/j.jssc.2014.01.024
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发表时间：
2014-04
影响因子：
3.3
通讯作者：
Liang-Cheng Wang;Lianjun Wang;Wan Jiang;H. Lin
中科院分区：
文献类型：
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作者：
Liang-Cheng Wang;Lianjun Wang;Wan Jiang;H. Lin
基于分子筛的非晶化，采用有序-无序转变的方法，通过放电等离子烧结（SPS）制备了石英玻璃。为了更好地理解SPS诱导非晶化的机理，制备了SPS诱导非晶化过程中的中间产物，并采用不同的表征技术对其进行了表征。X射线衍射和高能同步辐射X射线散射表明，有序晶体逐渐转变为玻璃。通过红外光谱和29 Si魔角旋转核磁共振（NMR）谱研究了玻璃网络中Si-O键长、O-Si-O键角、环尺寸、配位等局部结构的变化。通过对中间过程的精确控制，可以得到拓扑有序的、具有不同中程结构的非晶材料，有望为材料的优化和设计提供参考。
Based on the amorphization of zeolites, an order–disorder transition method was used to prepare silica glass via Spark Plasma Sintering (SPS). In order to get a better understanding about the mechanism of amorphization induced by SPS, the intermediate products in this process were prepared and characterized by different characterization techniques. X-ray diffraction and High-energy synchrotron X-ray scattering show a gradual transformation from ordered crystal to glass. Local structural changes in glass network including Si–O bond length, O–Si–O bond angle, size of rings, coordination were detected by Infrared spectroscopy and29Si magic-angle spinning nuclear magnetic resonance (NMR) spectroscopy. Topologically ordered, amorphous material with a different intermediate-range structure can be obtained by precise control of intermediate process which can be expected to optimize and design material.