2008 01 101-106
介孔分子筛SBA-15的合成与表征
基金项目(Foundation):
河南省杰出人才创新基金,编号0221001200;;
郑州大学引进人才专项基金
邮箱(Email):
DOI:
中文作者单位:
郑州大学化学系,郑州大学化学系,郑州大学化学系,郑州大学化学系,郑州大学化学系,郑州大学化学系 郑州450001,郑州450001,郑州450001,郑州450001,郑州450001,郑州450001
摘要(Abstract):
以三嵌段共聚物P123为模板剂、正硅酸乙酯为硅源,水热合成了介孔分子筛SBA-15,利用N2吸附-脱附、XRD、TEM等手段对其进行了表征,并考察了SiO2/P123摩尔比、反应溶液酸度、共溶剂等因素对其结构的影响.结果表明,随着SiO2/P123摩尔比的增加,介孔分子筛SBA-15的比表面无显著变化,孔径、孔容逐渐减小;随着反应溶液酸度的增强,样品比表面无明显变化,而孔径、孔容则明显变大;不同共溶剂的扩容效果不一,其中三甲苯的效果最佳.
关键词(KeyWords):
水热合成;;介孔分子筛SBA-15;;酸度;;共溶剂
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参考文献
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[4]魏东伟,杨新丽,郭益群,等.中孔分子筛的合成与表征[J].郑州大学学报:理学版,2002,34(3):65-67.
[5]李文江,赵纯,宋利珠,等.水玻璃为原料在开放体系中快速合成介孔材料MCM-41[J].高等学校化学学报,2001,22(6):1013-1015.
[6]Tanev P T,Pinnavaia T J.A neutral templating route to mesoporous molecular sieves[J].Science,1995,267(5199):865-867.
[7]Bagshaw S A,Prouzet E,Pinnavaia T J.Templating of mesoporous molecular sieves by nonionic polyethylene oxide sur-factants[J].Science,1995,269(5228):1242-1244.
[8]Zhao D Y,Huo J L,Stucky G D,et al.Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 ang-strom pores[J].Science,1998,279(5350):548-552.
[9]Flodstroem K,Wennerstroem H,Alfredsson V.Mechanism of mesoporous silica formation:a time-resolved NMR andTEM study of silica-block copolymer aggregation[J].Langmuir,2004,20(3):680-688.
[10]Galo J D,Eduardo L C,Clément S,et al.Block copolymer-templated mesoporous oxides[J].Current Opinion inColloid and Interface Science,2003,8(1):109-126.
[11]周丽绘,张利中,刘洪来.晶化温度对介孔材料SBA-15结构与形貌影响[J].过程工程学报,2006,6(3):499-502.
[12]Hoang V T,Huang Q L,Eic M,et al.Structure and diffusion characterization of SBA-15 materials[J].Langmuir,2005,21(5):2051-2057.
[13]翟庆洲,于辉,秦亮,等.SBA-15分子筛的合成研究[J].硅酸盐学报,2006,34(3):385-388.
[14]Choi M,Heo W,Kleitz F,et al.Facile synthesis of high quality mesoporous SBA-15 with enhanced control of the por-ous network connectivity and wall thickness[J].Chemistry Communication,2003(12):1340-1341.
[15]盖利刚.介孔分子筛制备、表征及应用[D].济南:山东大学,2006.
[16]赵春霞,陈文,刘琦,等.HCl对有序介孔氧化硅结构与形貌的影响[J].物理化学学报,2006,22(10):1201-1205.
[17]赵岚,朱广山,裘式纶,等.孔壁部分有序化的介孔二氧化硅材料的合成与表征[J].高等学校化学学报,2006,27(2):208-211.
[18]Zhao D Y,Huo Q S,Stucky G D,et al.Nonionic triblock and star diblock copolymer and oligomeric surfactant synthe-ses of highly ordered hydrothermally stable mesoporous silica structures[J].Journal of American Chemistry Society,1998,120(24):6024-6036.
基本信息:
DOI:
中图分类号:O643.3
引用信息:
[1]郑修成,袁程远,赵文平等.介孔分子筛SBA-15的合成与表征[J].郑州大学学报(理学版),2008(01):101-106.
基金信息:
河南省杰出人才创新基金,编号0221001200;; 郑州大学引进人才专项基金
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