| 甲胺改性酸碱双功能Y沸石的制备和表征 |
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| 引用本文： | 陈筱诚,余辉,郭娟,贺鹤勇,傅正文,龙英才.甲胺改性酸碱双功能Y沸石的制备和表征[J].化学学报,2009,67(16):1829-1834. |
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| 作者姓名： | 陈筱诚 余辉 郭娟 贺鹤勇 傅正文 龙英才 |
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| 作者单位： | 复旦大学化学系上海市分子催化与新材料重点实验室,上海,200433 |
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| 基金项目： | 国家科委973(No2003CB615801)资助项目 |
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| 摘 要： | 以甲胺水溶液为改性剂, H-Y沸石可在416 K下经水热反应制备酸碱双功能甲胺杂化H-Y沸石. X 射线粉末衍射(XRD), 固体29Si魔角核磁共振(29Si MAS NMR)表征表明甲胺分子与H-Y相互作用导致沸石晶胞体积明显增大, 骨架产生新的Si—N键. 以热重(TG/DTG)及差热分析(DTA), NH3, CO2程序升温脱附(NH3-TPD和CO2-TPD)研究杂化H-Y沸石的酸-碱性质及其经不同温度焙烧后的变化, 结果表明, 杂化后沸石的酸/碱量, 尤其是后者增加甚大. 与H-Y相比, 随焙烧温度变化, 该酸-碱双功能沸石材料的酸/碱量可分别提高3至7倍和1.5至26倍.
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| 关 键 词： | H-Y沸石 甲胺 杂化 改性 酸碱双功能 |
| 收稿时间： | 2009-2-3 |
| 修稿时间： | 2009-3-25 |
Preparation and Characterization of Acid-base Bifunctional Y Zeolite Modified with Methylamine |
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| Chen Xiaocheng,Yu Hui,Guo Juan,He Heyong,Fu Zhengwen,Long Yingcai.Preparation and Characterization of Acid-base Bifunctional Y Zeolite Modified with Methylamine[J].Acta Chimica Sinica,2009,67(16):1829-1834. |
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| Authors: | Chen Xiaocheng Yu Hui Guo Juan He Heyong Fu Zhengwen Long Yingcai |
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| Institution: | Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials;Department of Chemistry;Fudan University;Shanghai 200433 |
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| Abstract: | An acid-basic bifunctional amine-hybrid H-Y zeolite has been hydro-thermally prepared at 416 K with methylamine solution as a modifier.Characterized with X-ray powder diffraction (XRD) and solid state ~(29)Si magic-angle spinning nuclear magnetic resonance (~(29)Si MAS NMR),the obvious increase of cell volume and the appearance of new Si-N bonds in the framework have been observed.The acid-basic properties of the hybrid zeolite,investigated with TG/DTG/DTA and NH_3-TPD or CO_2-TPD,have been proved to be greatly enhanced.As pre-calcination at different temperatures,the acid amount and basic amount of the modified zeolite increase 3 to 7 times and 1.5 to 26 times respectively,in comparison with those of H-Y zeolite. |
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| Keywords: | H-Y zeolite methylamine hybridation modification acid-base bifunctional |
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