Synthesis And Application Of Transition Metal Oxide Composites Materials

Transition metal oxides due to its unique surface properties and physical chemistry,are widely research and application in the field of heterogeneous catalysis.In recent years,the research and application of transition metal oxides gradually started with the use of non-precious metal elements by the requirements of resources and the environment.The use of non-noble metal oxides as carriers has also become more widespread in the research of noble metal elements or their oxides.Based on copper oxides,iron oxides and cobalt oxides have important applications in the field of catalysis.Based on previous studies of transition metal oxides,this paper expands and complements the application of metal oxides in the field of catalysis.The basic content is as follows:1.Iron-copper transition metal composite oxides were prepared by a simple co-deposition method.It was applied to the Baeyer-Villiger oxidation reaction.Through the selection of different molar ratios,different calcination temperatures and different reaction conditions during the reaction,the optimum molar ratio of catalyst material with an iron-copper molar ratio of 1:5 was obtained.The reaction was performed in 1,2-dichlorobenzene,In the ethane,the reaction temperature is 50 °C and the reaction time is 5 h,the reaction conversion rate reaches 99.9%.2.In this paper,cobalt-iron transition metal complex oxides were synthesized by non-template method and used in the selective oxidation of unsaturated alcohols.Through different molar ratios,different calcination conditions and different reaction conditions during the reaction,the optimal molar ratio of cobalt to iron molar ratio of 1:1 catalyst material was obtained.The reaction was carried out in o-xylene.Under the most condition with reaction temperature of 120 °C and reaction time of 10 h,the reaction conversion rate reached 90%.