Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (10): 2421-2426.doi: 10.3866/PKU.WHXB20110932

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Synthesis and Catalytic Performances of Mesoporous CeNiO Catalysts for the Oxidative Dehydrogenation of Propane to Propene

WANG Cai-Cai, LI Jian-Hui, SUN Yi-Fei, ZHU Xiao-Quan, HUANG Chuan-Jing, WENG Wei-Zheng, WAN Hui-Lin   

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
  • Received:2011-06-02 Revised:2011-07-07 Published:2011-09-27
  • Contact: HUANG Chuan-Jing, WAN Hui-Lin;
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2010CB732300), National Natural Science Foundation of China (21073148, 21033006, 20803060), and Natural Science Foundation of Fujian Province, China (2009J01038).

Abstract: Mesoporous NiO and CeNiO catalysts were prepared by homogeneous precipitation using sodium dodecyl sulfate (SDS) mixed with triblock copolymer P123 as a template and urea as a hydrolysiscontrolling agent. The prepared catalysts were evaluated for the oxidative dehydrogenation of propane (ODP) to propene and the structure and properties of the catalysts were characterized by N2 adsorptiondesorption, transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and H2 temperatureprogrammed reduction (H2-TPR). The results showed that between 400 and 450°C, the NiO and CeNiO catalysts exhibited similar catalytic behavior for the ODP reaction but at low temperatures (<400°C) the catalysts doped with Ce had higher catalytic activity. On NiO only a 3.1% propene yield was obtained at 325°C while the yield on 5CeNiO (nCe/nNi=5%) was as high as 12.2% at the same temperature. The results of N2 adsorption-desorption and TEM indicated that both the prepared NiO and CeNiO catalysts possessed a high surface area and a wormhole-like mesostructure. The H2-TPR results revealed that part of the oxygen species became more reducible because of the presence of Ce in CeNiO, which may be the main reason for the higher activities of the catalysts.

Key words: Propane, Oxidative dehydrogenation, Propene, Mesoporous CeNiO catalyst