Effects of MgO on the combustion of phthalic anhydride over transition metal oxide catalysts

Abstract

The effects of MgO on the oxidation property of the transition metal oxide catalysts on the combustion of phthalic anhydride was investigated. The results showed that magnesium oxide promoted the adsorption of phthalic anhydride leading to better combustion of the phthalic anhydride for the acidic and amphoteric metal oxides. For the basic metal oxides, the magnesium oxide addition would decrease the combustion of phthalic anhydride. The research also found that the ratio of transition metal oxide per magnesium oxide should be at an appropriate ratio to keep a balance between the adsorption of the phthalic anhydride and the catalytic activity of the transition metal oxides