Mesoporous CexZr1−xO2 solid solutions supported CuO nanocatalysts for toluene total oxidation

• Published in: Journal of industrial and engineering chemistry (Seoul, Korea) pp. 3303 - 3312
• Main Authors: Qing-Fang Deng, Tie-Zhen Ren, Bao Agula, Yuping Liu, Zhong-Yong Yuan
• Format: Journal Article
• Language: English
• Published: 한국공업화학회 25.09.2014
• Subjects: 화학공학
• ISSN: 1226-086X; 1876-794X
• DOI: 10.1016/j.jiec.2013.12.012

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. KCI Citation Count: 39