Tibet Mag reviewed the laboratory preparation methods of magnesium oxide and its application in catalytic reactions. The preparation methods of magnesium oxide mainly include thermal decomposition method, chemical precipitation method, hydrothermal method and sol-gel method. The preparation raw materials and reaction conditions affect the surface structure and properties of magnesium oxide.
Magnesium oxide is highly alkaline and can be used as a solid base catalyst to catalyze Claisen-Schmidt and Knoevenagel condensation reactions. The interfacial interaction between magnesium oxide and nanometer metal produces a synergistic effect, and the prepared supported metal catalyst has unique structure and properties. As an auxiliary agent, magnesium oxide can adjust the structure and pH of the catalyst, and improve the activity and stability of the catalyst. Finally, the existing problems of magnesium oxide as a catalyst carrier were analyzed, and the possible solutions and directions were prospected.
Magnesium oxide (MgO), a typical alkali metal oxide (Ho=+26), is used as a fireproof material, optical material, transparent ceramic, etc. In catalytic reactions, MgO is used as a heterogeneous solid base catalyst to replace non-environmentally friendly homogeneous base catalysts; high surface area MgO is used as a metal and metal oxide catalyst support, and its interfacial interaction with active components produces synergistic properties , can prepare a multifunctional catalyst whose properties can be modified; as an auxiliary agent, MgO can change the structure and properties of the catalyst and improve the activity and stability of the catalyst.
Tibet Mag summarized the surface morphology and properties of MgO prepared by different reaction materials and reaction conditions, and found that different preparation methods affect the surface morphology and activity of MgO. The research status of MgO used as catalyst active component, carrier and auxiliary agent was analyzed. The catalyst preparation method and catalytic reaction conditions affect the catalytic performance.