Synthesis And Characteration Of Mesoporous Metal-Organic Frameworks Dominated With Permanent Interpartical Porosity

Metal-organic framework materials, which have the extended open framework structures, are constructed from the assembly of multidentate organic ligands (linker) with metal or metal clusters (conecteor). As a new kind of porous materials in recent years, they have great potential in gas storage, separation, catalysis and drug delivery applications owing to their permanent porosity and accessible surface area. In order to synthesize mesoMOFs which have greater potential, we develop a new strategy for building the permanent porosity based on nanoscale metal-organic frameworks (NMOFs). And we successfully synthesized four mesoMOFs dominated with permanent interparticle porosity by adding the right amount of ionic compound of tetra-butylammonium bromide (TBAB) as required. The dissertation contains three parts as follows:1. Sythesis and characterization of mesoMOF-1and mesoMOF-1-NH2materials based on MIL-53(Al):Two nanoscale micro-and mesopore hierarchical porous materials named as mesoMOF-1and mesoMOF-1-NH2were obtained and characterized by adjusting reaction parameters. They were prepared with the size of particals30nm approximately and mesopore apertures7.81nm and12.37nm respectively. Finally, the stability of mesoMOF-1was explored.2. Sythesis and characterization of mesoMOF-2material based on DUT-5(Al): Nanoscale micro-and mesopore hierarchical porous material named as mesoMOF-2(g) was obtained and characterized by adjusting reaction parameters and adding appropriate TBA and ionic compound TBAB. It was prepared with the size of particals30nm and mesopore apertures17.39-24.98nm.3. Sythesis and characterization of mesoMOF-3materials based on DUT-4(Al): Nanoscale micro-and mesopore hierarchical porous material named as mesoMOF-3(c) was obtained and characterized by adjusting reaction parameters and adding appropriate TBA and ionic compound TBAB. It was prepared with the size of particals30nm approximately and mesopore apertures9.59nm.