High temperature H2Sremoval over high specific surface area [beta ]-SiC supported iron oxide sorbent Part 1Preparation and characterization

Abstract

Iron oxide sorbents supported on high surface area (49 g^-1) SiC have been prepared and characterized. The results show that several forms of iron oxide can coexist including γ-Fe₂O₃, α-Fe₂O₃ and an amorphous phase, and these phases are homogeneously dispersed on the SiC surface (particle size from 1 to 5 nm). After controlled calcination the sorbent pore size distribution, measured by N₂ adsorption, ranged from 2.5 to 50 nm, which allowed a high accessibility of the reactant gas without microdiffusion phenomena.