Chinese Journal of Catalysis ›› 2011, Vol. 32 ›› Issue (9): 1537-1544.DOI: 10.3724/SP.J.1088.2011.10508

• Research papers • Previous Articles     Next Articles

Liquid-Phase Partial Hydrogenation of Benzene over Ru/MgAl2O4 Catalyst: Effect of Calcination Temperature of MgAl2O4

ZHOU Gongbing, LIU Jianliang, XU Ke, PEI Yana, QIAO Minghuab, FAN Kangnian   

  1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
  • Received:2011-05-28 Revised:2011-07-21 Online:2011-09-09 Published:2015-01-24

Abstract: The MgAl2O4 material was synthesized by the hydrothermal method. A series of Ru/MgAl2O4 catalyst samples were prepared using this MgAl2O4 calcined at different temperatures. The catalyst samples were characterized by powder X-ray diffraction, 27Al solid-state nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, temperature-programmed reduction, temperature-programmed desorption, N2 physisorption, transmission electron microscopy, and X-ray photoelectron spectroscopy. It was found that the spinel phase readily formed at calcination temperature as low as 773 K. The calcination temperature of MgAl2O4 strongly influenced the structural properties of the catalyst. In the liquid-phase partial hydrogenation of benzene, the Ru/MgAl2O4 catalyst sample calcined at 1023 K exhibited the highest cyclohexene selectivity and yield. The maximum cyclohexene yield was 38.5% and the corresponding selectivity was 52.4%. Based on the characterization results, the effect of the calcination temperature of MgAl2O4 on the activity and selectivity of Ru/MgAl2O4 catalyst samples was discussed.

Key words: ruthenium, magnesium aluminum spinel, calcination temperature, benzene, partial hydrogenation, cyclohexene