Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (1): 83-90.DOI: 10.1016/S1872-2067(15)60913-5

• Special Column on New Porous Catalytic Materials • Previous Articles     Next Articles

Synthesis of Pd nanoparticles supported on CeO2 nanotubes for CO oxidation at low temperatures

Jingmi Wua, Liang Zengb, Dangguo Chenga, Fengqiu Chena, Xiaoli Zhana, Jinlong Gongb   

  1. a Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China;
    b Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
  • Received:2015-04-30 Revised:2015-05-27 Online:2015-12-26 Published:2015-12-26
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21376209, 21376169), Zhejiang Provincial Natural Science Foundation (LZ13B060004), Program for Zhejiang Leading Team of S&T Innovation (2013TD07), and Program of Introducing Talents of Discipline to Universities (B06006).

Abstract:

Developing efficient supported Pd catalysts and understanding their catalytic mechanism in CO oxidation are challenging research topics in recent years. This paper describes the synthesis of Pd nanoparticles supported on CeO2 nanotubes via an alcohol reduction method. The effect of the support morphology on the catalytic reaction was explored. Subsequently, the performance of the prepared catalysts was investigated toward CO oxidation reaction and characterized by Nitrogen sorption, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and CO-temperature-programmed desorption techniques. The results indicated that the catalyst of Pd on CeO2 nanotubes exhibits excellent activity in CO oxidation at low temperatures, due to its large surface area, the high dispersion of Pd species, the mesoporous and tubular structure of the CeO2-nanotube support, the abundant Ce3+, formation of Pd-O-Ce bonding, and enhanced metal-support interaction on the catalyst surface.

Key words: Cerium oxide nanotube, Palladium nanoparticle, Metal-support interaction, Carbon monoxide oxidation, Low temperature