SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (9): 1862-1872.DOI: 10.1016/j.cjche.2017.09.019

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

Synthesis of ordered mesoporous manganese titanium composite oxide catalyst for catalytic ozonation

Chaofei Fei, Dan Li, Xian Mao, Yu Guo, Wenheng Jing   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
  • 收稿日期:2017-06-11 修回日期:2017-09-13 出版日期:2018-09-28 发布日期:2018-10-17
  • 通讯作者: Wenheng Jing,E-mail address:jingwh@njtech.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21676139), the Higher Education Natural Science Foundation of Jiangsu Province (15KJA530001), Research Fund of State Key Laboratory of Materials-Oriented Chemical Engineering (ZK201604) and the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Synthesis of ordered mesoporous manganese titanium composite oxide catalyst for catalytic ozonation

Chaofei Fei, Dan Li, Xian Mao, Yu Guo, Wenheng Jing   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
  • Received:2017-06-11 Revised:2017-09-13 Online:2018-09-28 Published:2018-10-17
  • Contact: Wenheng Jing,E-mail address:jingwh@njtech.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (21676139), the Higher Education Natural Science Foundation of Jiangsu Province (15KJA530001), Research Fund of State Key Laboratory of Materials-Oriented Chemical Engineering (ZK201604) and the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

摘要: In this account, highly ordered mesoporous MnOx/TiO2 composite catalysts with efficient catalytic ozonation of phenol degradation were synthesized by the sol-gel method. The surface morphology and properties of the catalysts were characterized by several analytical methods, including SEM, TEM, BET, XRD, FTIR, and XPS. Interestingly, Mn doping was found to improve the degree of order, and the ordered mesoporous structure was optimized at 3% doping. Meanwhile, MnOx was highly dispersed in the ordered mesoporous materials to yield good catalytic ozonation performance. Phenol could completely be degraded in 20 min and mineralized at 79% in 60 min. Thus, the catalyst greatly improved the efficiency of degradation and mineralization of phenol when compared to single O3 or O3 + TiO2. Finally, the reaction mechanism of the catalyst was discussed and found to conform to pseudo-first-order reaction dynamics.

关键词: Ordered mesoporous, MnOx, Catalytic ozonation, Pseudo-first-order reaction

Abstract: In this account, highly ordered mesoporous MnOx/TiO2 composite catalysts with efficient catalytic ozonation of phenol degradation were synthesized by the sol-gel method. The surface morphology and properties of the catalysts were characterized by several analytical methods, including SEM, TEM, BET, XRD, FTIR, and XPS. Interestingly, Mn doping was found to improve the degree of order, and the ordered mesoporous structure was optimized at 3% doping. Meanwhile, MnOx was highly dispersed in the ordered mesoporous materials to yield good catalytic ozonation performance. Phenol could completely be degraded in 20 min and mineralized at 79% in 60 min. Thus, the catalyst greatly improved the efficiency of degradation and mineralization of phenol when compared to single O3 or O3 + TiO2. Finally, the reaction mechanism of the catalyst was discussed and found to conform to pseudo-first-order reaction dynamics.

Key words: Ordered mesoporous, MnOx, Catalytic ozonation, Pseudo-first-order reaction