High porosity porous coordination polymer, preparation method, application and preparation method of film thereof

A coordination polymer and high porosity technology, applied in separation methods, alkali metal compounds, chemical instruments and methods, etc., can solve problems such as high specific surface area, high acid-base stability, and difficult industrial application

Active Publication Date: 2017-08-08
NANJING UNIV OF TECH
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Problems solved by technology

However, these porous coordination polymers are usually difficult to simultaneously have high specific surface area, high acid-base stability, high selectivity to gas, high dynamic adsorption capacity and simple synthesis, so it is difficult Meet practical industrial applications

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  • High porosity porous coordination polymer, preparation method, application and preparation method of film thereof
  • High porosity porous coordination polymer, preparation method, application and preparation method of film thereof
  • High porosity porous coordination polymer, preparation method, application and preparation method of film thereof

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Embodiment Construction

[0042] 1. Design method, synthesis, structural characterization

[0043] Copper(II) bromide (CuBr 2 ) and 5-imidazole isophthalic acid (H 3 L 1 ) was added to N,N-dimethylformamide / water (DMF / H 2 O) high yield rod-shaped crystals were obtained in the solution. Single crystal x-ray studies have shown that the parent structure of the crystal (Cu(L 1 ))·H 2 The space group of O·DMF (named NTU-11) is P21 / c( figure 1 and Table 1). The crystal asymmetric structural unit includes only one ligand and one Cu 2+ . Each ligand is connected to three copper paddle wheels, and each paddle wheel is bound to a hexaligand, and benzene rings and imidazole rings form rhombic nanotubes in a corrugated shape ( Figure 20 ).

[0044] These nanotubes expand infinitely along the a-axis, and at the same time, through the like apo / alpha-PbO 2 Adjacent tubes share the same topological structure to build the entire framework ( Figure 11 ). In this framework, all open metal sites on copper ...

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Abstract

Belonging to inorganic materials, the invention discloses a high porosity porous coordination polymer, a preparation method, application and a preparation method of a film thereof. Through the strategy of introducing two shortest alkyl groups or changing the positions, preparation of the porous coordination polymer with comprehensive performance can be realized. The prepared skeleton has one-dimensional pore channel, and has excellent water stability, thermal stability and acid-alkali stability simultaneously. Mixed gas adsorption based on the material indicates that the porous coordination polymer shows excellent methane / ethylene selective adsorption capacity at room temperature. In addition, through mixing of the porous coordination polymer with an organic polymer, a flexible film can be prepared, and the film has continuous, high efficiency and low energy consumption methane purification ability. The polymer is expected to be used for separation and purification of CH4 in natural gas, biogas, oil field gas and coal mine tunnel gas, and also can be used for purification of CH4 in hydrogen, carbon dioxide, carbon monoxide, ethylene, nitrogen and other mixed gases.

Description

technical field [0001] The invention belongs to inorganic materials, and specifically relates to a high-porosity coordination polymer, a preparation method, an application and a preparation method of a film thereof. Background technique [0002] The separation and purification of mixed gases in industrial processes is a crucial and difficult process. Traditional strategies, including gas compression / cryogenic distillation, require high energy for repeated evaporation of gas and repeated condensation of liquid, and also have high risks. However, due to the characteristics of low energy consumption, adsorption and membrane separation technologies based on porous materials are considered as promising solutions. Conventional materials, including porous carbons and zeolites, have been successfully used for industrial gas separation. However, in order to further improve the separation efficiency, it is particularly important and urgent to explore a new generation of porous mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08J5/18C08L77/00C08L87/00C07C7/12C07C7/144C07C9/04B01J20/22B01J20/28B01J20/30B01D71/58B01D71/56B01D53/22
CPCB01D53/228B01D71/56B01D71/58B01D2256/245B01J20/226B01J20/28033C07C7/12C07C7/144C08G83/008C08J5/18C08J2377/00C08J2487/00C08L77/00C08L2201/08C08L2203/16C08L87/00C07C9/04
Inventor 段金贵程福俊金万勤
Owner NANJING UNIV OF TECH
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