Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (12): 2223-2229.DOI: 10.1016/S1872-2067(12)60689-5

• Research papers • Previous Articles     Next Articles

Mesoporous LaFeO3 catalysts for the oxidation of toluene and carbon monoxide

Baozu Gao, Jiguang Deng, Yuxi Liu, Zhenxuan Zhao, Xinwei Li, Yuan Wang, Hongxing Dai   

  1. Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
  • Received:2013-06-12 Revised:2013-08-20 Online:2013-11-25 Published:2013-11-25
  • Contact: Jiguang Deng, Hongxing Dai
  • Supported by:

    The work was supported by the National Natural Science Foundation of China (21103005, 21077007), the Natural Science Foundation of Beijing Municipality (KZ200610005004), the Discipline and Postgraduate Education Foundation (PXM2013_014204_07_000261 and 005000542513551), and the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality (PHR201107104).

Abstract:

Wormhole-like orthorhombic LaFeO3 catalysts (LFO-1 and LFO-2) were prepared using the KIT-6 and SiO2 nanospheres as template, respectively. LFO-1 showed better catalytic activity with T50% and T90% of 155 and 180 ℃ for CO oxidation, and of 200 and 253 ℃ for toluene oxidation at 20000 mL/(g·h). The excellent catalytic performance was associated with its larger surface area (138 m2/g), higher adsorbed oxygen concentration, and better low-temperature reducibility as well as a wormhole-like mesoporous structure.

Key words: Wormhole-like mesoporous LaFeO3, Perovskite-type oxide, Hard template method, Carbon monoxide oxidation, Toluene oxidation