摘要： High quality and yield bio-aviation fuel can be produced by hydrodeoxygenation (HDO) and hydroisomerization technology over Ni-Mo supported on modified Al2O3 and Ni-W/SAPO-11 in a continuous-flow fixed-bed microreactor. Carbon deposition and water production is the main reason for the HDO catalyst deactivation because of high oxygen content of castor oil. The results showed that TiO2 modified Al2O3 improved the water and carbon deposition resistance as investigated in TGA, BET analysis and catalyst life test, which has important consequences for industrial production. The HDO products (C17-C18) were subsequently converted into C8-C16 using Ni-W/SAPO-11 in extremely mild conditions of 260 ℃, 3 MPa, 1 h-1 due to the high acid strength and hydrocracking activity of catalyst as proved in NH3-TPD analysis and hydroisomerization reaction test. In addition lower reaction temperature and high catalytic activity helps to reduce operating cost.