Room Temperature Catalytic Ozonation of Methyl Ethyl Ketone over Mesoporous MnOx/Al₂O₃ Catalysts = Room Temperature Catalytic Ozonation of Methyl Ethyl Ketone over Mesoporous MnOx/Al₂O₃ Catalysts

다국어 초록 (Multilingual Abstract)

Catalytic ozonation of methyl ethyl ketone (MEK) has been examined over mesoporous MnOx/Al₂O₃ (MA) catalysts developed by a solvent deficient method using two different manganese precursors including manganese chloride (C) and manganese sulfate (S) at room temperature. The maximum catalytic activities of MA with C (MEK removal efficiency and ozone decomposition of 98.4 and 93.7%, respectively) were higher than those of MA with S (MEK removal efficiency and ozone decomposition of 96 and 68%, respectively). Also the catalytic stability of MA with C was much higher than that of MA with S. The physico-chemical properties of catalysts are well correlated with the activity results, which confirmed that fine dispersion of MnOx species with high ratios of Mn³⁺/Mn⁴⁺ and more acid sites are attributed to the higher catalyst stability for the MA-C catalyst.