催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (6): 701-704.

• 研究论文 • 上一篇    下一篇

共聚法和嫁接法制备二茂铁杂化介孔材料及其催化性能

张铁明, 高鹏飞, 高春光, 杨恒权, 赵永祥   

  1. 山西大学化学化工学院精细化学品教育部工程研究中心, 山西太原 030006
  • 收稿日期:2010-06-25 出版日期:2010-06-25 发布日期:2013-12-05

Ferrocene-Containing Hybrid Mesoporous Materials Prepared by Co-condensation and Grafting Methods and Their Catalytic Properties

ZHANG Tieming, GAO Pengfei, GAO Chunguang, YANG Hengquan, ZHAO Yongxiang*   

  1. Engineering Research Center of Ministry of Education for Fine Chemicals, School of Chemistry and Chemical Engineering,Shanxi University, Taiyuan 030006, Shanxi, China
  • Received:2010-06-25 Online:2010-06-25 Published:2013-12-05

被引次数

9

摘要： 以桥联硅氧烷 1,1'-双[(2-三乙氧基硅基) 乙基]二茂铁 (BTEF) 和正硅酸乙酯为前驱体, 以十六烷基三甲基溴化铵为结构导向剂, 采用共聚法制备了二茂铁功能化的周期介孔有机硅烷材料 (PMO-Fc). 同时以 BTEF 为修饰剂, 以甲苯为分散剂, 采用嫁接法制备了 Fc-MCM-41 杂化介孔材料. 采用 N2 物理吸附、X 射线衍射、透射电镜和红外光谱等手段对材料进行了表征, 评价了其催化苯羟化反应活性. 结果表明, PMO-Fc 具有有序的二维六方形孔道结构, 较大的比表面积和孔体积, 在苯羟化反应中表现出比 Fc-MCM-41 更高的催化活性, 苯酚的选择性和收率分别为 65.3% 和 20.2%.

关键词: 嫁接, 共聚, 二茂铁, 桥联硅氧烷, 介孔材料, 杂化, 苯, 羟化, 苯酚

Abstract: A new Ferrocene(Fc)-containing periodic mesoporous organosilica (PMO-Fc) was synthesized directly through co-condensation of 1,1'-bis[2-(triethoxylsilyl)ethyl]ferrocene and tetraethyl orthosilicate using supramolecular templates of cetyltrimethylammonium bromide as structure directing agents. A hybrid material, Fc-MCM-41, was also prepared by covalently anchoring ferrocene onto the mesoporous silica material MCM-41 using toluene as the dispersant. The prepared materials were characterized by nitrogen adsorption, X-ray diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. The results showed that PMO-Fc had an ordered two-dimensional hexagonal mesostructure, higher BET surface area and pore volume. In the hydroxylation of benzene to phenol, PMO-Fc was highly active with 65.3% of phenol selectivity and 20.2% of phenol yield.

Key words: grafting, co-condensation, ferrocene, bridged siloxane, mesoporous material, hybrid, benzene, hydroxylation, phenol