| 直接法合成ZSM—5型分子筛的物理化学表征 |
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| 引用本文： | 郭振亚,王敬中.直接法合成ZSM—5型分子筛的物理化学表征[J].高等学校化学学报,1990,11(8):800-804. |
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| 作者姓名： | 郭振亚 王敬中 |
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| 作者单位： | 南开大学化学系，南开大学物理系 |
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| 摘 要： | 用高分辨~(29)Si、~(27)Al和~(23)Na NMR对直接法合成的不同硅铝比ZSM-5型分子筛局域结构作了表征,用~(29)Si和~(27)Al魔角旋转核磁共振研究了经不同温度水蒸气处理ZSM-5型分子筛的骨架脱铝,对不同条件下ZSM-5型分子筛中发生的正交-单斜晶型变化进行了系统的X射线衍射实验研究。
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| 关 键 词： | ZSM－5 分子筛 直接法合成 脱铝 |
Physico-Chemical Characterization of ZSM-5 Zeolite Synthesized Without Template |
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| Guo Zhenya,Wang Jingzhong,Wang Kaixuan,Zhou Daming,Xiang Shouhe,Li Hexuan.Physico-Chemical Characterization of ZSM-5 Zeolite Synthesized Without Template[J].Chemical Research In Chinese Universities,1990,11(8):800-804. |
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| Authors: | Guo Zhenya Wang Jingzhong Wang Kaixuan Zhou Daming Xiang Shouhe Li Hexuan |
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| Abstract: | High resolution 29Si, 27Al, 23Na NMR is used to characterize the local structure of ZSM-5 zeolites with various Si/Al ratios synthesized without template. The dealumination from the framework of ZSM-5 zeolites treated at different temperatures and steaming times is studied by 29Si and 27Al MAS NMR. A systematic X. R. D. study on the conditions under which the crystallographic shape of ZSM-5 type changes from orthorhombic to monoclinic(or vice versa) is reported. |
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| Keywords: | Synthesis without template Local structure Dealumination MAS NMR |
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