Progress in the Application of Metal Ion Replacement in the Synthesis of Novel Metal-Organic Frameworks
[Purposes]Metal-organic frameworks are widely used in gas adsorption separation,catalysis and other fields.However,most metal-organic frameworks are severely limited in application due to sta-bility problems.In this study,metal-organic frameworks with high stability were studied.[Methods]The metal ions in the metal-organic framework were replaced by in-situ substitution method.On the basis of maintaining the original structure of the metal-organic framework,the metal ions or clusters were re-placed.While obtaining a new type of metal-organic framework with more excellent properties,its pore structure was also well maintained,and its stability mechanism was studied.[Findings]The research re-sults show that this kind of MOFs is studied from the two aspects of the general rules of metal ion substi-tution and the factors affecting metal ion exchange,which provides theoretical support for the construc-tion of new metal organic frameworks.[Conclusions]By looking forward to the application prospect of this kind of MOFs,it is speculated that the future development direction is mainly to improve the replace-ment rate of metal ions and further study the replacement mechanism.The research results provide refer-ence for subsequent related research.
metal metathesismetal-organic frameworksin-situ replacement
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