Modification method for effectively improving MOFs water stability and ammonia gas adsorption performance

A technology of water stability and adsorption performance, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of water stability hindering HKUST-1, crystal structure damage, skeleton collapse, etc.
CN110467707AActive Publication Date: 2019-11-19BEIJING UNIV OF TECH
2 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2019-11-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a modification method for effectively improving MOFs water stability, and belongs to the technical field of organic-inorganic porous composite materials. The method concretelyrelates to the use of a metal organic skeletal material MOFs as an inorganic phase and the use of a high specific surface and an internal pore structure of the MOFs. Monomers of an organic phase, suchas styrene, methacrylic acid and other olefin monomers, are introduced into the pore structure of the MOFs, and the monomers are induced to undergo free radical copolymerization in pores of a metal organic framework, thereby modifying a skeleton of the MOFs and improving the water stability. The free radical copolymerization is simple in reaction conditions and easy in implement. When the methodis applied to post-synthesis modification of the MOFs, the structure is not destroyed, and the water stability of the MOFs is improved. The MOFs has the absorption performance of ammonia, can be regenerated at high temperature to a certain extent, and can ensure the stability of a composite material in ammonia adsorption penetration.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention enhances the water stability of metal-organic framework materials through in-situ free radical copolymerization, and the composite material obtained after copolymerization in harmful gases such as ammonia gas, belongs to the technical field of organic-inorganic porous composite materials. Background technique

[0002] Metal-organic frameworks (Metal-Organic Frameworks, MOFs) have the characteristics of ultra-high specific surface area, controllable pore size and adjustable chemical environment, and can be used in air purification, water environment treatment, gas storage and chemical sensing, etc. It shows a very good application prospect. As a typical MOFs material, HKUST-1 is formed by coordination self-assembly of copper salt and trimesic acid. Its crystal structure is similar to a paddle wheel, and each Cu ion is axially combined with a water molecule, which is easy to be removed to obtain a vacant metal active site, so that it exhib...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More