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纳米介孔分子筛MCM-41的微波辐射合成法
引用本文:姚云峰,张迈生,杨燕生.纳米介孔分子筛MCM-41的微波辐射合成法[J].物理化学学报,2001,17(12):1117-1121.
作者姓名:姚云峰  张迈生  杨燕生
作者单位:School of Chemistry and Chemical Engineering, Zhongshan University,Guangzhou 510275
基金项目:广州市科技重点攻关计划基金资助项目(2000-Z-076-01)
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  
收稿时间:2001-05-21
修稿时间:2001年5月21日

Synthesis of Nano-sized MCM-41 Mesoporous Molecular Sieve by Microwave Radiation Method
Yao Yun-Feng,Zhang Mai-Sheng,Yang Yan-Sheng.Synthesis of Nano-sized MCM-41 Mesoporous Molecular Sieve by Microwave Radiation Method[J].Acta Physico-Chimica Sinica,2001,17(12):1117-1121.
Authors:Yao Yun-Feng  Zhang Mai-Sheng  Yang Yan-Sheng
Affiliation:School of Chemistry and Chemical Engineering, Zhongshan University,Guangzhou 510275
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).
Keywords:MCM-41 mesoporous molecular sieve  Microwave radiation method  Synthesis  Characterization
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