无机材料学报

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Ti(IV)在介孔氧化硅MCM-41中的液相移植

张文华; 施剑林; 陈航榕; 闫继娜; 华子乐; 严东生   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室, 上海 200050
  • 收稿日期:2000-01-18 修回日期:2000-02-25 出版日期:2001-01-20 网络出版日期:2001-01-20

Solution Grafting of Ti(IV) inside MCM-41 Materials

ZHANG Wen-Hua; SHI Jian-Lin; CHEN Hang-Rong; YAN Ji-Na; HUA Zi-Le; YAN Dong-Sheng   

  1. State Key Lab of High Performance Ceramics and Superfine microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2000-01-18 Revised:2000-02-25 Published:2001-01-20 Online:2001-01-20

摘要: 以钛酸丁酯为原料,通过液相移植反应,在介孔氧化硅MCM-41中成功地组装了Ti(IV),利用XRD、TEM、EDS、FT-IR、N吸附-脱附、29Si MAS NMR等多种实验方法对材料进行了表征,并讨论了液相移植反应的机理.实验表明,通过与介孔材料骨架表面Q硅原子中的硅醇键(Si-OH)的反应而形成钛-氧-硅(Ti-O-Si)键,Ti(IV)被成功地固定到介孔材料的骨架上面; 950~960cm-1红外共振吸收的加强是Si-O-Ti键形成的标志.

关键词: 介孔材料, Ti(IV), 液相移植

Abstract: Ti(IV) was successfully grafted onto the frameworks of MCM-41 material by solution grafting reaction scheme. The product was extensively characterized by XRD, TEM, EDS, FTIR, N2 adsorption-desorption isotherms and 29Si MAS NMR methods. Three mechanisms of the solution grafting reaction were put forward. Experimental results show that the Si-OH groups react with Ti(OBu)4 and form St-O-Ti bands, which are marked by the strong absorption at 950~960cm-1 in IR spectra

Key words: mesoporous materials, Ti(IV), solution grafting

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