ENHANCEMENT OF SULFATION OF MAGNESIUM BRIDE BY IRON-OXIDE

The adsorption of SO2 by MgO pellet with Fe2O3 additive was investigat ed by thermogravimetric method. Surface areas, pore volumes and pore s ize distributions of pellet at different stages of reaction were deter mined by a surface area meter. The compositions of some solid samples were analyzed by X-ray diffractometer. Experimental results indicated that the reaction rate could be enhanced by increasing the amount of F e2O3, decreasing the grain size of Fe2O3 or increasing the sulfation t emperature. The enhancement of the adsorption of SO2 is probably due t o the catalytic effect of Fe2O3 on the oxidation of SO2 to form SO3 wh ich is captured by MgO.