Porous metal-organic framework hybrid material as well as preparation method and application thereof

Abstract

The invention discloses a porous metal-organic framework hybrid material. A chemical formula of the porous metal-organic framework hybrid material is (Cu4O2(tpa)2)*2NO3*DMA, wherein Htpa adopts 4-(4-benzene acetoxy)-1, 2, 4-triazole, and DMA adopts N, N-dimethylacetamide; and the hybrid material is synthesized by cupric nitrate tetrahydrate serving as metal salt and 4-(4-benzene acetoxy)-1, 2, 4-triazole serving as an organic ligand. The porous metal-organic framework hybrid material has the advantages as follows: 1), raw materials for synthesis are cheap and easy to obtain, the condition is mild, large-scale preparation of the hybrid materials is easy to realize, and the crystal form can be maintained in the large-scale synthetic process; 2), the product has excellent acid resistance and alkaline resistance, and the structure can be maintained in a boiled water environment; and 3), the absorption capacity of the product on CO2 at the temperature of 273K can reach 52 cm<3>g<-1> while the absorption capacity of the product on N2 is only 3.4 cm<3>g<-1>, so that the porous metal-organic framework hybrid material has a good potential application value in the aspect of CO2 preferential absorption.

Description

technical field [0001] The invention relates to the preparation of crystalline inorganic-organic hybrid materials, in particular to a porous metal-organic framework hybrid material and its preparation method and application. Background technique [0002] Metal-organic frameworks (MOFs) are a new type of crystalline inorganic-organic hybrid materials. With their good potential application value and rich and colorful topological structure, they are attracting countless scientists around the world to devote a lot of effort to it. It is one of the research hotspots and frontiers in the field of new materials. At present, the research hotspots of MOFs mainly focus on the separation and storage of gases, the loading and release of drugs, as an effective carrier of heterogeneous catalysts, and solid phase separation. MOFs are usually composed of metal or metal cluster nodes and organic ligands. Reasonable selection of these two parts can realize the regulation of the structure and...

AI Technical Summary

Problems solved by technology

The current strategy for synthesizing MOFs with good water stability is mainly to use metals or metal clusters with high oxidation states as nodes to connect with polycarboxylic acid or pyridine ligands. The stronger the coordination bond between them, but the disadvantage is that it is difficult to obtain crystalline materials, which brings great difficulties to the subsequent structure determination work.

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