催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (3): 230-234.

• 研究论文 • 上一篇    下一篇

高度分散的MnxOy/SBA-15的制备及其催化性能

陈勇1, 李永生1, 李亮1, 顾金楼1, 赵文茹1, 李蕾2, 施剑林1,2   

  1. 1华东理工大学材料科学与工程学院超细材料教育部重点实验室, 上海200237; 2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200052
  • 收稿日期:2009-03-25 出版日期:2009-03-25 发布日期:2012-12-19

Preparation of Highly Dispersed MnxOy/SBA-15 and Its Catalytic Properties

CHEN Yong1, LI Yongsheng1,*, LI Liang1, GU Jinlou1, ZHAO Wenru1, LI Lei2, SHI Jianlin1,2,*   

  1. 1 Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; 2 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, The Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2009-03-25 Online:2009-03-25 Published:2012-12-19

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摘要： 采用溶液浸渍法将乙酰丙酮锰或硝酸锰的糠醇溶液分别灌注到SBA-15的孔道内, 一定条件下将糠醇碳化后再将碳烧除,即可得到高度分散的MnxOy/SBA-15复合催化剂. 用X射线衍射、透射电镜和N2吸附-脱附等手段对样品进行了表征. 结果表明, SBA-15负载MnxOy后, 不仅依然保持高度有序的孔道结构、较大比表面积和孔容, 而且MnxOy在SBA-15孔道内部高度分散. 乙苯的催化氧化反应结果表明, 该催化剂尤其是用乙酰丙酮锰做锰源时具有很高的催化活性和选择性.

关键词: 氧化锰, SBA-15, 高分散性, 乙苯, 氧化

Abstract: A simple method was developed to prepare highly dispersed MnxOy/SBA-15 composites by incipient wetness co- impregnation of carbon and Mn precursors into the pore structure of SBA-15. The catalysts showed high activity and selectivity for the oxidation of ethylbenzene using tert-butyl hydroperoxide as the oxidant in a liquid phase.

Key words: manganese oxide, SBA-15, high dispersion, ethylbenzene, oxidation