Preparation and Hydrodenitrogenation Performance of Ni2P/TiO2-Al2O3 Catalyst

Abstract

TiO₂-Al₂O₃ composite support was prepared by the sol-gel process and then was used to prepare the precursors in oxidation state of Ni₂P/TiO₂-Al₂O₃ catalysts through wet impregnation method. The Ni₂P/TiO₂-Al₂O₃ catalyst was obtained via in situ hydrogen reduction technique in a fixed-bed reactor and its hydrodenitrogenation activity was tested using quinoline as model compound. Results showed that TiO₂/Al₂O₃ molar ratios had a significant influence on hydrodenitrogenation activity as well as the loading of Ni₂P. Catalyst exhibited the best catalytic activity when n(TiO₂):n(Al₂O₃) was 1/4 and the loading of Ni₂P was 25 wt % and its hydrodenitrogenation rate could reach 98.2 %.