Preparation of nano α-Fe2O3 and γ-Fe2O3 and used for elemental mercury removal

Abstract

The rod-shaped nano α-Fe2O3 and γ-Fe2O3 were prepared by a hydrothermal method. And the crystal phase structure, particle size, morphology and surface area of the synthesized nano α-Fe2O3 and γ-Fe2O3 were characterized by XRD and BET analysis. The removal of gaseous elemental mercury by nano α-Fe2O3 and γ-Fe2O3 was carried out on a fixed bed reactor. The effects of oxygen, bed temperature, particle size and acid flue gas components have been discussed. The results show that elemental mercury could be oxidized by nano α-Fe2O3 and γ-Fe2O3 with the presence of oxygen.