The Post-synthetic Modification Of UMCM-1-NH₂ And Its Application For Preparing ?-amino Alcohols And Cyclic Carbonates

Metal-organic frameworks?Metal-Organic Frameworks,referred to as MOFs?refers to metal ions and organic ligands through the self-assembly process to form a periodic network structure of the metal-organic skeleton materials.Large surface area,aperture size adjustable MOFs caused by molecular sensing,fluorescence and other fields widely used.With the MOFs post-synthetic modification theory?Post-synthetic modification,referred to as PSM?generation,greatly expanded the metal-organic skeleton material applications.In this paper,we introduce the Schiff base into the MOFs through the post-synthetic modification method,and then chelate the metal ions to catalyze the ring-opening reaction of the organic amine and the epoxy compound.The first chapter is the literature review,the concept and characterization of MOFs,the significance of catalyzing the synthesis of ?-amino alcohols,the elaboration of MOFs post-synthetic modification method and its application in the field of catalysis,and finally clarified the research content and significance of this paper.In the second chapter,the UMCM-1-NH₂/n-Bu₄NBr synergetic system was constructed.The system was applied to catalyze the coupling reaction of CO₂ with propylene oxide to form cyclic carbonate,which catalyzed the reaction under mild conditions and showed a good catalytic effect with a good recycling performance.In the third chapter,salicylaldehyde was anchored to UMCM-1-NH₂ by post-synthetic modification?PSM?technology to obtain the porous metal-organic skeleton compound UMCM-1-NH-Sal.The catalyst of UMCM-1-NH-Sal-Cu was obtained by chelating the copper ions on the Schiff base N,O atoms in the pore of the compound.The catalysts were characterized by 1HNMR,XRD,TG and N₂ adsorption.The preparation of ?-amino alcohols use the catalysts by ring-opening reaction of organic amine and epoxide was carried out.The results showed that the catalyst had good catalytic effect.