Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (11): 1995-2003.DOI: 10.1016/S1872-2067(15)60937-8

• Articles • Previous Articles     Next Articles

Pt nanoparticles entrapped in ordered mesoporous carbons: An efficient catalyst for the liquid-phase hydrogenation of nitrobenzene and its derivatives

Junrui Li, Xiaohong Li, Yue Ding, Peng Wu   

  1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
  • Received:2015-05-21 Revised:2015-06-17 Online:2015-11-02 Published:2015-11-02
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21273076 and 21373089), the Open Research Fund of Top Key Discipline of Chemistry in Zhejiang Provincial Colleges and Key Laboratory of the Ministry of Education for Catalysis Materials (Zhejiang Normal University, ZJHX2013), and Shanghai Leading Academic Discipline Project (B409).

Abstract:

Pt nanoparticles entrapped in ordered mesoporous CMK-3 carbons with p6mm symmetry were prepared using a facile impregnation method, and the resulting materials were characterized using X-ray diffraction spectroscopy, N2 adsorption-desorption, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The Pt nanoparticles were highly dispersed in the CMK-3 with 43.7% dispersion. The Pt/CMK-3 catalyst was an effective catalyst for the liquid-phase hydrogenation of nitrobenzene and its derivatives under the experimental conditions studied here. The Pt/CMK-3 catalyst was more active than commercial Pt/C catalyst in most cases. A highest turnover frequency of 43.8 s-1 was measured when the Pt/CMK-3 catalyst was applied for the hydrogenation of 2-methyl-nitrobenzene in ethanol under optimal conditions. It is worthy of note that the Pt/CMK-3 catalyst could be recycled easily, and could be reused at least fourteen times without any loss in activity or selectivity for the hydrogenation of nitrobenzene in ethanol.

Key words: Pt nanoparticle, Nitrobenzene compound, Liquid-phase hydrogenation, Ordered mesoporous carbon