含氮基团改性Ti-SBA-15酸碱双功能介孔材料的制备及催化性能

摘要

采用后嫁接的方法将有机碱氨丙基、咪唑、腺嘌呤分别引入Ti-SBA-15，合成了酸碱双功能介孔材料。XRD、TEM、FTIR、N₂物理吸附脱附和TPD等表征结果表明：有机碱被成功接枝到了Ti-SBA-15的孔道，并维持了Ti-SBA-15规则有序的孔道结构，酸性中心位于Ti-SBA-15骨架而碱性中心位于Ti-SBA-15孔道。经过氨丙基、咪唑、腺嘌呤改性后的Ti-SBA-15在环氧丙烷与CO₂的环加成反应中均表现出催化活性，其中腺嘌呤的引入显著提高了催化效率并可重复使用。

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	金念
	韩金玉
	张文娟
	王华

关键词： Ti-SBA-15；有机碱改性；酸碱双功能； CO₂环加成反应

Abstract：

Bifunctional mesoporous catalysts had been synthesized by post-grafting of nitrogen-containing organic bases, such as aminepropyl (-NH₂), imidazole (-Im) and adenine (-Ade). The mesoporous materials were characterized by XRD, TEM, FTIR, N₂ adsorption and desorption, TPD and so on. The results showed that the organic basic groups have been successfully grafted in Ti-SBA-15, meanwhile, the ordered mesoporous structure remains intact. The acidic sites lie in the framework and basic sites are located in the pores of Ti-SBA-15. All modified Ti-SBA-15 are able to enhance the catalytic performance in catalyzing CO₂ cycloaddition with propylene oxide. In particular, the modification with adenine (-Ade) shows a high catalytic activity as well as a good reusability.

Keywords： Ti-SBA-15； organic basic modification； acid-base bifunction； CO₂ cycloaddition

Received 2014-03-26;

Fund:

天津市应用基础与前沿技术研究计划（08JCZDJC17300）；国家自然科学基金（21206117）。

Corresponding Authors: 王华,E-mail:tjuwanghua@tju.edu.cn。 Email: tjuwanghua@tju.edu.cn

About author: 金念(1990-),女,硕士研究生,从事应用催化方向的研究。

引用本文:

金念, 韩金玉, 张文娟, 王华.含氮基团改性Ti-SBA-15酸碱双功能介孔材料的制备及催化性能[J]. 化学工业与工程, 2016,33(6): 8-13,94

Jin Nian, Han Jinyu, Zhang Wenjuan, Wang Hua.Preparation and Catalytic Activity of Nitrogen Groups Modified Ti-SBA-15 Acid-Base Bifunctional Mesoporous Materials[J]. Chemcial Industry and Engineering, 2016,33(6): 8-13,94

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