| MCM-48分子筛的合成、XRD的表征及 129Xe 核磁共振的研究 |
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| 引用本文： | 孙克宁,张乃庆,曹莹,邵延文. MCM-48分子筛的合成、XRD的表征及 129Xe 核磁共振的研究[J]. 哈尔滨工业大学学报, 2002, 34(2): 194-196 |
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| 作者姓名： | 孙克宁 张乃庆 曹莹 邵延文 |
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| 作者单位： | 1. 哈尔滨工业大学,理学院,黑龙江,哈尔滨,150001
2. 黑龙江大学,分析测试中心,黑龙江,哈尔滨,150086 |
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| 基金项目： | 教育部留学回国人员基金资助课题 ( 9880 90 10 1) |
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| 摘 要： | 用水热法合成了MCM－48，并研究了MCM－48分子筛结构，通过X射线衍射和^129Xe核磁共振研究了其空间结构，确定了MCM－48为Ia^-3d空间群的立体结构。经过560℃烧后的MCM－48分子筛，空间群结构仍未改变。与一维的MCM－41分子筛比较，MCM－48分子筛的核磁共振化学位移有两个峰，而且位移小，说明MCM－48是立体结构，而且孔径也大于MCM－41。
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| 关 键 词： | MCM－48分子筛 合成 XRD ^129Xe核磁共振 X射线衍射 结构 孔径 |
| 文章编号： | 0367-6234(2002)02-0194-03 |
| 修稿时间： | 2000-11-20 |
Synthesis of mesoporous molecular sieve MCM-48、X-ray diffraction and 129Xe NMR |
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| SUN Ke-ning ,ZHANG Nai-qing,CAO Ying ,SHAO Yan-wen. Synthesis of mesoporous molecular sieve MCM-48、X-ray diffraction and 129Xe NMR[J]. Journal of Harbin Institute of Technology, 2002, 34(2): 194-196 |
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| Authors: | SUN Ke-ning ZHANG Nai-qing CAO Ying SHAO Yan-wen |
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| Affiliation: | SUN Ke-ning 1,ZHANG Nai-qing,CAO Ying 1,SHAO Yan-wen 2 |
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| Abstract: | A cubic member of mesoporous molecular sieve M41S family with a three dimension structure was denoted as MCM-48. A cubic symmetry with an Ia3dspace group was determined by X-ray powder diffraction(XRD)for the as -synthesized and calcined MCM-48 material. The pore structure was unaffected by the local change of structure .The chemical shift in 129 Xe NMR Spectroscopy of adsorbed Xenon indicates that the MCM-48 is a cubic symmetry compared with MCM-41, one-dimensional pore channels. The pore of MCM-48 is bigger than that of MCM-41. |
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| Keywords: | M41S MCM-48 XRD 129 Xe NMR |
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