Citation: Zhiwei Wang, Yuxi Liu, Tao Yang, Jiguang Deng, Shaohua Xie, Hongxing Dai. Catalytic performance of cobalt oxide-supported gold-palladium nanocatalysts for the removal of toluene and o-xylene[J]. Chinese Journal of Catalysis, ;2017, 38(2): 207-216. doi: 10.1016/S1872-2067(16)62569-X shu

Catalytic performance of cobalt oxide-supported gold-palladium nanocatalysts for the removal of toluene and o-xylene

a Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, and 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;
b Mechanical Engineering Department, University of Aveiro, 3810-193 Aveiro, Portugal

Received Date: 17 September 2016
Revised Date: 27 October 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (21377008, 21477005, U1507108), National High Technology Research and Development Program of China (2015AA034603), Beijing Nova Program (Z141109001814106), and Natural Science Foundation of Beijing Municipal Commission of Education (KM201410005008).

Using the molten salt and polyvinyl alcohol-protected reduction method, we fabricated Co₃O₄ octahedron-supported Au-Pd (x(AuPd_y)/Co₃O₄; x=(0.18, 0.47, and 0.96) wt%; y (Pd/Au molar ratio)=1.85-1.97) nanocatalysts. The molten salt-derived Co₃O₄ sample possessed well-defined octahedral morphology, with an edge length of 300 nm. The Au-Pd nanoparticles, with sizes of 2.7-3.2 nm, were uniformly dispersed on the surface of Co₃O₄. The 0.96(AuPd_1.92)/Co₃O₄ sample showed the highest catalytic activity for toluene and o-xylene oxidation, and the temperature required for achieving 90% conversion of toluene and o-xylene was 180 and 187℃, respectively, at a space velocity of 40000 mL/(g·h). The high catalytic performance of Co₃O₄ octahedron-supported Au-Pd nanocatalysts was associated with the interaction between Au-Pd nanoparticles and Co₃O₄ and high concentration of adsorbed oxygen species.
- Molten salt,
- Cobalt oxide,
- Au-Pd nanoparticle,
- Volatile organic compound,
- Catalytic oxidation
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