MOFs composite material containing heteropolyacid and transition metal complex as well as preparation method and application thereof

Abstract

The invention discloses an MOFs composite material containing heteropolyacid and a transition metal complex as well as a preparation method and an application thereof. The preparation method comprisesthe following steps: in the presence of an organic solvent N,N'-dimethylformamide, dissolving and heating metal zirconium salt, adding 4,4'-biphenyldicarboxylic acid, a platinum metal organic ligand,a mineralizing agent benzoic acid and heteropolyacid, mixing and stirring all the components, and carrying out hydrothermal reaction for a period of time, thereby obtaining the material. The MOFs composite material containing the heteropolyacid and the transition metal complex is obtained for the first time, and can be applied to the fields of gas adsorption, separation and storage, heterogeneouscatalysis and the like.

Description

technical field [0001] The invention belongs to the technical field of organic metal framework materials, and in particular relates to a MOFs composite material containing heteropolyacid and platinum metal complexes, a preparation method and application thereof. Background technique [0002] In the past ten years, metal-organic framework materials, as new porous materials, have been studied more and more, which has greatly promoted the application and development of this type of materials. Metal-organic frameworks (MOFs) are new types of porous materials with spatially porous structures, which use metal ions or clusters as nodes and organic ligands as linkers. Metal organic framework materials have the characteristics of high specific surface area, porosity, multifunctional structure and functional adjustability. Porosity is an important property of materials used in catalysis, gas adsorption and separation. Another important indicator of metal-organic framework materials. ...

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Problems solved by technology

Metal organic framework materials have the characteristics of high specific surface area, porosity, multifunctional structure and functional adjustability. Porosity is an important property of materials used in catalysis, gas adsorption and separation. Another important indicator of metal-organic framework materials. These characteristics of metal-organic framework materials are widely used in the research of gas adsorption, separation and storage, and heterogeneous catalysis. However, the stability of metal-organic frameworks is poor. The introduction of new components in MOFs can Improve this defect and at the same time endow MOFs with richer functional properties

[0003] Transition metal complexes are a kind of transition metal complexes formed by transition metals and different molecules or groups. Transition metals have good redox ability and coordination ability. At the same time, transition metal oxides have strong heat resistance and toxicity resistance. Moreover, it has photosensitivity, heat sensitivity, and impurity sensitivity, which is conducive to the modulation of catalyst performance, so it is considered to be a very promising catalyst, but the recovery of transition metals is difficult; heteropolyacids are composed of heteroatoms and polyatoms according to a certain It is a kind of metal-oxygen cluster compound composed of oxygen atom coordination bridge, which has high catalytic activity, both acid catalytic performance and redox catalytic performance. It is a multifunctional new catalyst, but heterogeneous Polyacids are easy to aggregate to form large grains, which weakens its catalytic performance, and heteropolyacids are easily soluble in water and organic solvents, resulting in short catalytic life and limiting the catalytic performance

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