| Porosity of microporous zeolites A, X and ZSM-5 studied by small angle X-ray scattering and nitrogen adsorption |
| X. M. Du; E. D. Wu
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| 2007
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| 发表期刊 | Journal of Physics and Chemistry of Solids
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| ISSN | 0022-3697
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| 卷号 | 68期号:9页码:1692-1699 |
| 摘要 | Small-angle X-ray scattering (SAXS) using synchrotron radiation and nitrogen adsorption have been applied to characterizations of porosities and microporous structures for the zeolites of NaA, KA, CaA, NaX and ZSM-5. Besides the information on the external morphology of the particles of the zeolites, the complementation of the two techniques has revealed rich and consistent structural and surface information on the molecular scale crystalline pores of these zeolites. Analyses of the data suggest that the determined sizes of the micropores imply the pore spaces occupied by the probe molecules of water in the SAXS and nitrogen in adsorption techniques, respectively. The microporous information of NaA and KA are difficult to obtain from nitrogen adsorption, due to the blocking of nitrogen by their narrow channels, but have been satisfactorily measured by SAXS. The factors causing variations of the measured values of the parameters in different analysis methods have been discussed. (C) 2007 Published by Elsevier Ltd. |
| 部门归属 | chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wu, ed (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;ewu@imr.ac.cn
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| 关键词 | Microporous Materials
X-ray Diffraction
Microstructure
Surface
Properties
Pore-size Distribution
Horvath-kawazoe Equations
Surface-area
Hydrogen Storage
Molecular-sieve
Fractal Systems
Carbon
Saxs
Curvature
Polymers
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| URL | 查看原文
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| WOS记录号 | WOS:000249770000011
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/33505
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
X. M. Du,E. D. Wu. Porosity of microporous zeolites A, X and ZSM-5 studied by small angle X-ray scattering and nitrogen adsorption[J]. Journal of Physics and Chemistry of Solids,2007,68(9):1692-1699.
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| APA |
X. M. Du,&E. D. Wu.(2007).Porosity of microporous zeolites A, X and ZSM-5 studied by small angle X-ray scattering and nitrogen adsorption.Journal of Physics and Chemistry of Solids,68(9),1692-1699.
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| MLA |
X. M. Du,et al."Porosity of microporous zeolites A, X and ZSM-5 studied by small angle X-ray scattering and nitrogen adsorption".Journal of Physics and Chemistry of Solids 68.9(2007):1692-1699.
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