以离子液体为模板剂合成MCM-41的研究——不同扩孔剂对介孔分子筛MCM-41孔径结构的影响  

Study on the Synthesis of MCM-41 with the Ionic Liquid as Novel Template——Effect of Different Swelling Agents on the Pore Structure of Mesoporous MCM-41

作　　者：张光旭[1] 高为芳[1] 蔡卫权[1] 

机构地区：[1]武汉理工大学化学工程学院,湖北武汉430070

出　　处：《分子催化》2008年第6期497-502,共6页Journal of Molecular Catalysis(China)

摘　　要：以离子液体为模板剂,正硅酸乙酯为硅源,研究了扩孔剂三甲苯,癸烷,以及三甲苯与癸烷1∶1的混合物对介孔分子筛MCM-41结构的影响,采用XRD以及氮吸附-脱附分析技术对合成的介孔分子筛MCM-41进行了表征.结果表明:三种扩孔剂中以三甲苯与癸烷1∶1的混合物效果最优,MCM-41的孔径可达到4.5 nm,并且可以提高介孔分子筛的比表面积与结晶度.扩孔剂的最佳添加量为:扩孔剂与模板剂之比等于1.0;最佳晶化温度120℃.MCM-41 was synthesized using the ionic liquid as novel template, TEOS as silica source, and the effect of swelling agents, including decane, 1,3,5-tri- methybenzene （TMB） , the mixture of decane and TMB under the ratio of 1.0, on the pore structure of MCM-41 was studied. The prepared MCM-41 was characterized by XRD and N2 adsorption-desorption analysis. The results showed that the mixture of decane and TMB under the ratio of 1.0, had a beneficial effect on the pore diameter, and it also can enhance the regular arrangement of channels and crystallinity, and the MCM-41 pore diameter can be increased to 4.5 nm. The optimal addition of swelling agent was as follows： the ratio of swelling agent to template was one; the best crystallization temperature was 120℃.

关 键 词：介孔分子筛MCM-41 扩孔剂 离子液体 

分 类 号：O643.3[理学—物理化学]