화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.5, 3303-3312, September, 2014
DOI10.1016/j.jiec.2013.12.012  Export Citation
Mesoporous CexZr1-xO2 solid solutions supported CuO nanocatalysts for toluene total oxidation
Qing-Fang Deng, Tie-Zhen Ren1, Bao Agula, Yuping Liu, and Zhong-Yong Yuan†
  • Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
  • 1School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
E-mail:
Mesoporous CexZr1-xO2 solid solutions were prepared by the surfactant-assisted method and used as support of CuO nanocatalysts for catalytic total oxidation of toluene. The prepared CuO/CexZr1-xO2 catalysts have a wormhole-like mesoporous structure with high surface area and uniform pore size distribution, and the CuO nanoparticles were highly dispersed on the surface of CexZr1-xO2. The doping of ZrO2 in CeO2 promotes the dispersion of active copper species and enhances the reducibility of copper species. The effect of Ce/Zr ratio, calcination temperature and CuO loading amount on the catalytic performance of CuO/CexZr1-xO2 was investigated in detail. The 400 ℃-calcined 8%CuO/Ce0.8Zr0.2O2 catalyst exhibits the highest activity with the complete toluene conversion temperature of 275 ℃ at the condition of GHSH = 33,000 h-1 and the toluene concentration of 4400 ppm. The interfacial interaction between CuO and the CexZr1-xO2 support, highly dispersed CuO nanoparticles and the nature of the support contribute to the high catalytic activity of mesoporous CuO/CexZr1-xO2 nanocatalysts.
Keywords:Mesoporous oxides;CuO nanocatalyst;Ce-Zr-O solid solution;Catalytic total oxidation;Toluene
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