物理化学学报 >> 2001, Vol. 17 >> Issue (12): 1117-1121.doi: 10.3866/PKU.WHXB20011212

研究简报 上一篇    下一篇

纳米介孔分子筛MCM-41的微波辐射合成法

姚云峰;张迈生;杨燕生   

  1. 中山大学化学与化学工程学院,广州 510275
  • 收稿日期:2001-05-21 修回日期:2001-09-13 发布日期:2001-12-15
  • 通讯作者: 张迈生 E-mail:ce01@zsu.edu.cn

Synthesis of Nano-sized MCM-41 Mesoporous Molecular Sieve by

Yao Yun-Feng;Zhang Mai-Sheng;Yang Yan-Sheng   

  1. School of Chemistry and Chemical Engineering, Zhongshan University,Guangzhou 510275
  • Received:2001-05-21 Revised:2001-09-13 Published:2001-12-15
  • Contact: Zhang Mai-Sheng E-mail:ce01@zsu.edu.cn

摘要: 报导了纳米介孔分子筛MCM-41的微波辐射合成法,运用XRD、HRTEM、IR、TG、荧光光谱和低温N2吸附等技术对其进行了表征.研究结果表明,利用微波技术合成MCM-41,操作便利,节能省时.所得产物具有六方介孔排列结构,孔径约2.5 nm;颗粒大小分布均匀,平均粒径约40 nm;比表面积和孔隙率高,吸附量大,热稳定性好;在近紫外光激发下,显示出纳米粒子的量子发光效应.

关键词: 介孔分子筛MCM-41, 微波辐射法, 合成, 表征

Abstract: A rapid synthesis of mesoporous molecular sieve MCM-41 with nanometer size by sol-gel method under microwave radiation heating is reported. The effect of different factors, such as raw materials ratio, acidity, power and duration of microwave radiation employed in crystallization and removal of organic template processes on the morphology of the products was systemically investigated and the optimum reaction conditions were also selected. The resulting samples were characterized with such techniques as XRD, HRTEM, IR, TG, photoluminescence spectroscopy and N2 adsorption isotherm, etc. The results showed that reaction time and energy required in the synthesis of MCM-41 mesophase by microwave radiation method were greatly reduced in contrast with those needed by hydrothermal method. The samples, which displayed a hexagonal mesostructure with short-range order having pore diameter of about 2.5 nm exhibited a photoluminescence effect due to the nanometer-diameter crystallites(about 40 nm, see Fig.2~3). The as-prepared MCM-41 mesoporous molecular sieve was found to possess a huge surface area, pore volume and good thermal stability (see Table 3).

Key words: MCM-41 mesoporous molecular sieve;Microwave radiation method, Synthesis;Characterization