Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (3): 508-517.DOI: 10.1016/S1872-2067(11)60358-6

• Research papers • Previous Articles     Next Articles

Preparation of Nickel Phosphide/Mesoporous-TiO2 Catalyst and Its Hydrodesulfurization Performance

YANG Zhuhong*, LI Licheng, WANG Yanfang, LIU Jinlong, FENG Xin, LU Xiaohua   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
  • Received:2011-09-05 Revised:2011-12-30 Online:2012-03-15 Published:2015-07-27

Abstract: Using mesoporous TiO2 (m-TiO2) as the support, novel nickel phosphide/m-TiO2 catalysts (Ni2P/m-TiO2) were prepared by a temperature-programmed reduction method. The influence of the Ni/P molar ratio and the amount of active component on the catalyst structure and the hydrodesulfurization (HDS) performance was investigated. The results indicated that the reduction of precursor with Ni/P = 1.25 yielded mainly Ni2P, and the optimum loading of Ni was 10%. The influence of m-TiO2 on the preparation and HDS performance of nickel phosphide catalysts was also evaluated by X-ray diffraction, N2 physisorption, field-emission scanning electron microscopy, and temperature-programmed reduction. The results showed that m-TiO2 with high crystallinity could dramatically decrease the reduction temperatures of Ni and P species. When the reduction temperatures were between 450 and 600 °C, the textures of the Ni2P/m-TiO2 catalysts were very similar and the specific surface areas were about 90 m2/g. The effects of the support on the dibenzothiophene HDS performance of the nickel phosphide catalysts were also investigated. The results showed that the order of dibenzothiophene conversion was Ni2P/m-TiO2 > Ni2P/SiO2 > Ni2P/P25.

Key words: mesoporous, titania, nickel phosphide, hydrodesulfuriztion, dibenzothiophene