For the development of effective catalysts to be used in biomass gasification, Fe2O3 nanoparticles are prepared by a homogeneous precipitation method involving an aqueous solution of Fe(NO3)3· 9H2O and urea. The effects of various technical parameters on the synthesis yield of nanometer products are investigated and the optimum processing conditions are proposed through orthogonal experiments. The significant influencing factors on the yield of nanometer Fe2O3 are the molar ratio of reactants, the concentration of reactant and the reaction t...