Catalytic Hydrogenation for Cyclohexyl Multifluorobenzene Preparation by Mo Modified Raney Ni Catalysts
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TQ426.61

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    Abstract:

    A series Raney Ni catalysts were prepared and characterized by inductive coupling plasma emission spectrum, N2 adsorption-desorption, X-ray powder diffraction (XRD), H2-temperature programmed desorption (H2-TPD) and scanning electron microscopy (SEM) to investigate their physical and chemical properties. The catalyst were applied to catalyze 4-(trans-4-propyl) cyclohexyl-1-cyclohexene-4-methyl-2,3-difluorophenyl (TF) hydrogenation to trans-4-(trans-4-propyl) cyclohexyl-1-cyclohexyl-4-methyl-2,3-difluorophenyl (trans-TFT). The results showed RQ Ni-Mo catalyst prepared from Mo-modified rapidly quenched Ni-Al alloy had a higher specific surface area, larger pore volume, pore size and smaller crystal particle size. Under the optimized reaction conditions of the solvent toluene 5ml, the RQ Ni-Mo catalyst 0.05g, TF 0.20g, reaction temperature 40℃, reaction pressure 1.5MPa and reaction time 2h, the conversion of TF and the selectivity to trans-TFT could reach 100% and 69.72%, respectively.

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History
  • Received:May 13,2016
  • Revised:September 05,2016
  • Adopted:September 14,2016
  • Online: November 16,2016
  • Published:
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