title: Formation of (FexMn(2-x))O3 solid solution and high sulfur capacity properties of Mn-based/M41 sorbents for hot coal gas desulfurization.
abstract: Several MCM-41 materials were synthesized at different conditions by hydrothermal procedure using cheap and easily available industrial water glass as silica source. Fe doped manganese-based oxide/MCM-41 sorbents were prepared by a sol-gel method. The effects of loadings of metal oxide, Fe/Mn molar ratios over MCM-41 and reaction temperature on the performance of sorbent for hot coal gas desulfurization were investigated. Various techniques such as BET, XRD, XPS, LRS and HRTEM were used to characterize the sorbents. The result indicated Fe(3+) ions could occupy a position of Mn(3+) in cubic lattice of Mn2O3 and the (FexMn2-x)O3 solid solution is mainly active phase of sorbent. Moreover, the result of nine successive sulfurization-regeneration cycles of sorbent showed high sulfur adsorption capacity and endurable stability of FeMn4Ox/MCM-41 for H2S removal.
authors: Department of Chemistry, Tianjin University, Tianjin 300072, PR China.
authors: Y
authors: Y
authors: Zhang
authors: B S
authors: BS
authors: Liu
authors: F M
authors: FM
authors: Zhang
authors: Z F
authors: ZF
authors: Zhang
mesh_terms: D000327:Adsorption; D000397:Air Pollution / Q000517:prevention & control; D003031:Coal; D005740:Gases; D007501:Iron / Q000737:chemistry*; D017895:Manganese Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*; D013499:Surface Properties; D018505:Waste Management / Q000379:methods
chemical_list: D003031:Coal; D005740:Gases; C509968:MCM-41; D017895:Manganese Compounds; D010087:Oxides; C027424:manganese oxide; D013455:Sulfur; D012822:Silicon Dioxide; D007501:Iron