Thesis (M.Eng.)--Chulalongkorn University, 2000

The oxidation property of the Co-Mg-O/TiO2 (8wt%Co, 1wt%Mg) catalyst was investigated by using the selective oxidation reaction of 1-propanol and 2-propanol as test reactions. It was found that the oxidation property of Co-Mg-O/TiO2 catalyst depended on type of the reactants. For the oxidation of 1-propanol, Co-Mg-O/TiO2 catalyst provided the maximum propionaldehyde yield ca. 57%. In case of 2-propanol oxidation reaction, it was found that Co-Mg-O/TiO2 catalyst was an active catalyst for selective oxidation reaction. The main product at low reaction temperature was propylene while at high reaction temperature the main reaction products were propylene and propionaldehyde. From the result of propylene oxidation, it indicated that propionaldehyde was produced directly from propylene. In addition, the sequence of cobalt and magnesium loading had no effect on the structure and catalytic performance of this catalyst, while the type of support affected the selectivity of supported cobalt catalyst.