Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (1): 137-144.doi: 10.3866/PKU.WHXB201411171

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Hydrogenation of Nitrobenzene Catalyzed by Metal-Organic Framework-Supported Ni Nanoparticles

JIANG Jun, LI Gang, KONG Ling-Hao   

  1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China
  • Received:2014-09-17 Revised:2014-11-14 Published:2014-12-25
  • Contact: LI Gang E-mail:liganghg@dlut.edu.cn
  • Supported by:

    The project was supported by the National Key Basic Research Programof China (973) (2011CB201301).

Abstract:

The metal-organic frameworks (MOFs), MIL-53(Al), MIL-96(Al), and MIL-120(Al) (MIL: Material Institute of Lavorisier) were synthesized and used as supports, to incorporate low-cost Ni nanoparticles (NPs) by wet impregnation. The samples were used as catalysts in the hydrogenation of nitrobenzene to aniline. The catalyst prepared with MIL- 53(Al) as a support exhibited excellent catalytic performance. Ni/MIL- 53(Al) heterogeneous catalysts were prepared using nickel nitrate, nickel acetate, and nickel ethanediamine as precursors. Characterization by powder X-ray diffraction, Fourier-transforminfrared spectroscopy, inductively coupled plasma spectroscopy, N2 sorption measurements, H2-temperature programmed reduction, and transmission electron microscopy showed that the Ni precursor affected the metal-support interaction, Ni particle size and particle distribution. The catalyst prepared using nickel ethanediamine possessed moderate metalsupport interactions, smaller Ni nanoparticles (4-5 nm), and a high Ni distribution. This resulted in its superior catalytic activity, with 100% conversion of nitrobenzene in the hydrogenation. The Ni/MIL-53(Al) catalyst retained its catalytic activity after five cycles, and exhibited a nitrobenzene conversion of ~92%.

Key words: Metal-organic framework, Nickel, Support, Precursor, Nitrobenzene hydrogenation

MSC2000: 

  • O643