物理化学学报 >> 2007, Vol. 23 >> Issue (04): 620-624.doi: 10.3866/PKU.WHXB20070434

研究简报 上一篇    

一步法直接合成有机季铵功能修饰的介孔分子筛SBA-15

周丽绘; 张利中; 胡军; 赵秀阁; 刘洪来   

  1. 华东理工大学化学工程联合国家重点实验室,化学系, 上海 200237; 华东理工大学分析测试中心, 上海 200237
  • 收稿日期:2006-08-21 修回日期:2006-12-09 发布日期:2007-04-05
  • 通讯作者: 刘洪来 E-mail:hlliu@ecust.edu.cn

Direct Synthesis ofMesoporous SBA-15 Functionalized with Quaternary AmmoniumOrganic Group

ZHOU Li-Hui; ZHANG Li-Zhong; HU Jun; ZHAO Xiu-Ge; LIU Hong-Lai   

  1. State Key Laboratory of Chemical Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China; Research Center of Analysis and Test, East China University of Science and Technology, Shanghai 200237, P. R. China
  • Received:2006-08-21 Revised:2006-12-09 Published:2007-04-05
  • Contact: LIU Hong-Lai E-mail:hlliu@ecust.edu.cn

摘要: 以P123 嵌段共聚物为模板剂, 3-三甲基丙基氯化铵三甲氧基硅烷(TMAPS)为修饰剂, 酸性条件下一步法直接合成了有机季铵基团功能修饰的SBA-15, 并通过XRD、TEM、N2吸附-脱附、Raman 光谱等对功能化样品的结构和性质进行了表征, 对一步法合成TMAPS 修饰的SBA-15 的可能反应机理进行了探讨. 修饰后的SBA-15 仍然保持了二维六方特征介孔结构, 随着TMAPS负载量的增大, SBA-15 孔道有序度下降, 孔径、孔容和比表面积也随之下降. 有机季铵基团在SBA-15 孔道表面均匀分散, 可与HAuCl4通过快速离子交换制备Au 颗粒高度分散的Au-SBA-15.

关键词: SBA-15, TMAPS, 一步法合成, 功能修饰, Au-SBA-15

Abstract: The functionalized SBA-15 with quaternary ammonium organic group was directly synthesized in acid conditions by using nonionic triblock P123 as template, N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride (TMAPS) as modifying agent. By means of XRD, TEM, N2 adsorption-desorption and Raman spectroscopy, the structure and properties of the functionalized SBA-15 were characterized. The results indicated that the regular hexagonal structural character was retained after the functionalization. With increasing of amounts of TMAPS, the BET surface area, pore size, and pore volume of functionalized SBA-15 were decreased.Moreover, Au-SBA-15 had been successfully prepared by ion exchage of TMAPS groups uniformly distributed in the channel of functionalized SBA-15 with HAuCl4.

Key words: SBA-15, TMAPS, Direct synthesis, Functionalized modification, Au-SBA-15

MSC2000: 

  • O648