| 具有碱催化活性的有序氮氧化硅MCM-41介孔分子筛的制备与性能研究 |
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| 引用本文： | 张存满,刘茜,徐政. 具有碱催化活性的有序氮氧化硅MCM-41介孔分子筛的制备与性能研究[J]. 化学学报, 2006, 64(4): 313-319 |
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| 作者姓名： | 张存满 刘茜 徐政 |
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| 作者单位： | 同济大学材料科学与工程学院,上海,200092;中国科学院上海硅酸盐研究所,高性能陶瓷和超微结构国家重点实验室,上海,200050 |
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| 摘 要： | 以介孔氧化硅MCM-41为氮化前驱体, 以纯的氨气为氮源, 通过调节氮化工艺参数, 制备出了氮含量高达23.01 wt%、比表面积高达665.4 m2•g－1、平均孔径为2.5 nm的氮氧化硅有序介孔分子筛材料. 采用CNH元素分析、N2吸附- 脱附分析、小角XRD、高分辨透射电镜(HRTEM)、红外光谱以及29Si 固体核磁共振谱(MAS NMR)等技术对材料的结构进行系统的研究. 并且通过苯甲醛和丙二腈的缩合反应研究了该类材料的碱催化活性. 研究表明, 在30 ℃反应3 h后苯甲醛的转化率达到99.9%.
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| 关 键 词： | 氮氧化硅 有序介孔材料 MCM-41 碱性催化 |
| 收稿时间： | 2005-04-21 |
| 修稿时间： | 2005-04-212005-10-14 |
Preparation and Performance Study of Ordered Silicon Oxynitride MCM-41 Molecular Sieves with Basic Catalytic Activity |
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| ZHANG Cun-Man,LIU Qian,XU Zheng. Preparation and Performance Study of Ordered Silicon Oxynitride MCM-41 Molecular Sieves with Basic Catalytic Activity[J]. Acta Chimica Sinica, 2006, 64(4): 313-319 |
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| Authors: | ZHANG Cun-Man LIU Qian XU Zheng |
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| Affiliation: | (1 School of Material Science and Engineering, Tongji University, Shanghai 200092)(2 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics,Chinese Academy of Sciences, Shanghai 200050) |
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| Abstract: | The ordered silicon oxynitride mesoporous materials with nitrogen content 23.01 wt%, BET surface area 665.4 m2•g－1 and mean pore size 2.5 nm were successfully prepared by controlling nitridation process parameters. The changes in composition and structure of the silicon oxynitride MCM-41 were investigated by means of elemental analysis, nitrogen sorption measurements, low-angle XRD, Si MAS NMR, IR spectra and high-resolution TEM. The resulting materials showed high activity toward the Knoevenagel condensation of benzaldehyde with malononitrile and the yield reached 99.9% after reacting for 3 h at 30 ℃, which often acts as a probing reaction for base catalysis. |
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| Keywords: | silicon oxynitride ordered mesoporous material MCM-41 base catalysis |
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