催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (7): 643-648.

• 研究论文 • 上一篇    下一篇

介孔 Ti-MCM-41 在苯乙烯氧化反应中的催化性能

陈丹丹, 李年凯, 孙鹏, 孔岩   

  1. 南京工业大学化学化工学院材料化学工程国家重点实验室, 江苏南京 210009
  • 收稿日期:2009-07-25 出版日期:2009-07-25 发布日期:2013-04-24

Catalytic Performance of Ti-MCM-41 for Styrene Oxidation

CHEN Dandan, LI Niankai, SUN Peng, KONG Yan*   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
  • Received:2009-07-25 Online:2009-07-25 Published:2013-04-24

PDF

1334

被引次数

42

摘要： 以 MCM-41 为骨架, 以无机钛源 Ti(SO4)2 为原料成功合成了不同 Ti 含量的 Ti-MCM-41 样品, 并考察了它们在 H2O2 氧化苯乙烯反应中的催化性能, 研究了溶剂和 Ti 含量等因素对其催化性能的影响. 结果表明, 该反应主要产物为苯甲醛, 苯乙烯转化率和苯甲醛收率均随骨架 Ti 含量增加而增加; 催化剂中钛含量相近时,孔径的减小能够改善其催化性能; 反应体系的合适溶剂应具有一定极性, 如乙腈; 降低溶剂极性和 H2O2 浓度可减少苯乙烯的进一步氧化, 从而适当增加了苯乙醛和环氧苯乙烷选择性.

关键词: 介孔材料, Ti-MCM-41, 苯乙烯, 氧化, 过氧化氢

Abstract: The increasing titanium content in the framework or on the surface of Ti-MCM-41 catalyst led to the different regular variation of the structure parameters and the catalytic activity in the direct oxidation of styrene by hydroperoxide. Organic compounds with adequate polarity such as acetonitrile were the preferred solvent.

Key words: mesoporous material, Ti-MCM-41, styrene, oxidation, hydrogen peroxide