高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (11): 2131-2135.

• 研究论文 • 上一篇    下一篇

具有多级孔的纯硅沸石材料的合成

陈丽, 王一萌, 何鸣元   

  1. 华东师范大学化学系, 上海市绿色化学与化工过程绿色化重点实验室, 上海 200062
  • 收稿日期:2010-03-31 出版日期:2010-11-10 发布日期:2010-11-10
  • 通讯作者: 王一萌, 男, 博士, 研究员, 博士生导师, 主要从事多相催化研究. E-mail: ymwang@chem.ecnu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20873042, 20890122)和华东师范大学优秀博士培养基金(批准号: 2009014)资助.

Synthesis of Silicalite-1 with Hierarchical Porosity

CHEN Li, WANG Yi-Meng*, HE Ming-Yuan   

  1. Department of Chemistry, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, China
  • Received:2010-03-31 Online:2010-11-10 Published:2010-11-10
  • Contact: WANG Yi-Meng. E-mail: ymwang@chem.ecnu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20873042, 20890122)和华东师范大学优秀博士培养基金(批准号: 2009014)资助.

摘要: 采用表面活性剂组装沸石晶种的方法, 研究了不同浓度的非离子表面活性剂 P123 对组装的纳米Silicalite-1沸石晶粒的形貌和性质的影响. 实验发现, 在稀溶液体系中 P123 组装的沸石颗粒既在低角区呈现出介孔材料的特性, 又在高角区表现出沸石的结构特征; TEM证实纳米粒子间存在无序的蠕虫状介孔孔道.

关键词: 纳米沸石, 自组装, 多级孔, P123

Abstract: Hierarchical Silicalite-1 aggregates were synthesized by the assembly of Silicalite-1 zeolite seeds under different concentrations of P123. The samples were characterized by X-ray diffraction, IR spectroscopy, TEM and N2 adsorption to evaluate the physico-chemical properties of the mesoporous zeolite aggregates. The sample preserved a single well-defined peak in low-angle XRD patterns, at the same time, the diffraction peaks of Silicalite-1 appeared at wide-angle XRD patterns indicate the formation of MFI structure in the composite. The uniform worm-like pore distributed among the ZSM-5 zeolite aggregates was confirmed by TEM image.

Key words: Zeolite nano-particle, Self-assembly, Hierarchical pore, P123