Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2010, Vol. 31 ›› Issue (8): 955-960.

• Research Briefing • Previous Articles     Next Articles

Low-Temperature Hydrogenation and Dehydrogenation of 1,3-Cyclohexadiene on Pt/Ni Bimetallic Catalysts

QI Suitao1,2, YU Weiting2, William W. LONERGAN2, YANG Bolun1, CHEN Jingguang G2,*   

  1. 1State Key Laboratory of Multiphase Flow in Power Engineering, Department of Chemical Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China 2Department of Chemical Engineering, Center for Catalytic Science and Technology (CCST), University of Delaware, Newark, DE 19716, USA
  • Received:2010-04-08 Online:2010-08-30 Published:2013-12-26

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Abstract: Pt-Ni bimetallic catalysts and their corresponding monometallic catalysts supported on γ-Al2O3 were prepared by incipient wetness impregnation and characterized by CO chemisorption. Their low-temperature activity for the hydrogenation and dehydrogenation of 1,3-cyclohexadiene (1,3-CHD) was tested at 308 K in a batch reactor using Fourier transform infrared spectroscopy. The Pt-Ni/γ-Al2O3 bi-metallic catalyst showed higher activity than either Pt/γ-Al2O3 or Ni/γ-Al2O3. We correlated the experimental results with density functional theory calculations of the binding energy for 1,3-CHD on the corresponding model surfaces. The correlation confirmed that bimetallic sur-faces with weaker cycloalkene binding energy generally showed higher hydrogenation activity.

Key words: bimetallic, platinum, nickel, alumina, supported catalyst, 1,3-cyclohexadiene, hydrogenation, dehydrogenation, density functional theory