| NaY/MCM-48复合分子筛的合成与表征 |
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| 引用本文： | 李永昕,张艳华,薛冰.NaY/MCM-48复合分子筛的合成与表征[J].无机材料学报,2006,21(5):1209-1216. |
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| 作者姓名： | 李永昕 张艳华 薛冰 |
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| 作者单位： | 1. 江苏工业学院化工系, 常州 213016;
2. 天津大学材料科学与工程学院, 天津 300072 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以微孔分子筛NaY为内核, 合成一种中微孔复合分子筛NaY/MCM-48. 通过XRD、SEM、TEM、IR、N_2吸附脱附和TPD等手段对复合材料进行了表征, 此外对复合材料的水热稳定性进行了考察. 研究结果表明, 复合材料同时具有中孔分子筛MCM-48和微孔NaY型沸石的特点, 并且和纯MCM-48分子筛相比孔壁增厚, 孔径变大; 与纯中孔分子筛MCM-48相比, 复合分子筛的酸性明显增强, 并且水热稳定性提高. DFT计算其孔径分布主要集中于1.2和3.2nm.
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| 关 键 词： | NaY/MCM-48复合分子筛 孔壁 孔径 水热稳定性 酸性 |
| 文章编号： | 1000-324X（2006）05-1209-08 |
| 收稿时间： | 09 16 2005 12:00AM |
| 修稿时间： | 2005-09-162005-11-19 |
Synthesis and Characterization of NaY/MCM-48 Composite Molecular Sieve |
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| LI Yong-Xin,ZHANG Yan-Hua,XUE Bing.Synthesis and Characterization of NaY/MCM-48 Composite Molecular Sieve[J].Journal of Inorganic Materials,2006,21(5):1209-1216. |
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| Authors: | LI Yong-Xin ZHANG Yan-Hua XUE Bing |
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| Affiliation: | 1. Department of Chemical Engineering, Jiangsu Polytechnic University, Changzhou 213016, China; 2. School of Material Science and Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | A new material NaY/MCM-48 composite molecular sieve was prepared with NaYzeolite as the inner core. The synthesized composite sample was characterized by XRD, SEM, TEM, IR, N2 adsorption/desorption method and TPD. In addition, it's hydrothermal stability was studied. The results show that the composite material has the properties of both mesoporous MCM-48 and the microporous NaY. The composite molecular sieve has thicker pore wall, larger pore size, stronger acid strength and higher hydrothermal stability than pure mesoporous molecular sieve MCM-48. The DFT pore diameter is mainly located at 1.2nm and 3.2nm. |
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| Keywords: | NaY/MCM-48 composite molecular sieve pore wall pore size hydrothermal stability acid strength |
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