Formation of (FexMn2−x)O3 solid solution and high sulfur capacity properties of Mn-based/M41 sorbents for hot coal gas desulfurization

High-Temperature Desulfurization of Coal Gas over Sm Doped Mn-based/MSU-S Sorbents

“…30 According to the report of Renzo et al, 31 the thermal stability of mesoporous MSU-S depended strongly on the wall thickness. In other words, the wall thickness (2.3 nm) of as-prepared MSU-S calculated via the difference of unit cell parameter (a 0 = 2d 100 /√3) with the maximum pore size (D p ) was remarkably higher than that (1.6 nm) of MCM-41 reported by Zhang et al 32 The XRD patterns ( Figure 3A(b)) of MSU-S treated at 800°C in 10% (v/v) H 2 O/N 2 mixture for 2.0 h verified that the MSU-S mesostructure still remained a well-ordered hexagonal array 30 with similar pore wall thickness, similar to the aforementioned observation in N 2 adsorption isotherms ( Figure 1A). Similarly, small-angle XRD patterns of sorbents illustrated that the introduction of Sm/Mn metal oxides on MSU-S did not destroy significantly the hexagonal mesoporous structure of support ( Figure 3A).…”

Magnesium oxide impregnated polyurethane to remove high levels of manganese cations from water

“…Based on this study, PU MgO has a high potential in the application of passive treatment system for removing Mn(II) since it has a high removal rate and capacity compared to conventional materials. Especially, PU MgO saturated by Mn 3 O 4 could be reused in the removal process of sulfur in gas phase [43][44][45][46].…”

High-temperature desulfurization of hot coal gas on Mo modified Mn/KIT-1 sorbents

“…S BET (m 2 /g) V p (cm 3 /g) V Mic (cm 3 /g) V Meso (cm 3 remarkably, meaning that an identification of the oxidation state is not possible [44][45][46]. Therefore, the spectrum of Mn 3s was collected in order to identify the chemical states of manganese.…”