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Gas separation functional material and preparation method and application thereof

A functional material and gas separation technology, applied in the field of nanoporous materials, can solve the problems of poor thermal stability and mechanical stability, difficult synthesis, easy to break and other problems, and achieve the effects of good heat resistance, convenient operation and enhanced mechanical strength.

Inactive Publication Date: 2010-04-21
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used inorganic porous separation and adsorption materials have the advantages of high temperature resistance, good chemical stability, high mechanical strength, and high separation efficiency, but they are brittle and easy to break
Polymer porous separation and adsorption materials have the advantages of good flexibility, easy surface modification, and large-area use, but compared with inorganic porous materials, they are difficult to synthesize, and have poor thermal and mechanical stability.
Therefore, the development of new functional materials for gas separation has become the key to large-scale separation and enrichment of gases. see related reports

Method used

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  • Gas separation functional material and preparation method and application thereof
  • Gas separation functional material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a 250ml round bottom three-neck bottle, add 30 grams of water-based nano-iron oxide sol, 70 grams of water-based styrene-butyl acrylate-acrylic acid urethane emulsion with amino functional modification groups obtained by soap-free emulsion polymerization (monomer molar ratio 3: 3: 1), be warming up to 60-80 ℃, stir 2 hours, obtain styrene-butyl acrylate-acrylate urethane polymer / nanometer iron oxide composite emulsion, this emulsion is in 100 ℃ drying for 5 hours to obtain nanoporous gas separation functional materials with amino groups, which can be used for CO 2 、H 2 S, SO 2 , NO 2 Separation and enrichment of acidic gases.

Embodiment 2

[0037] In a 250ml round bottom three-neck bottle, add 20 grams of nano-calcium carbonate sol, 100 grams of polyurethane-hydroxyethyl acrylate-styrene emulsion (monomer molar ratio 2: 1: 7) obtained by emulsion polymerization, and ultrasonically stir for 30 Minutes to obtain polyurethane-hydroxyethyl acrylate-styrene polymer / nano-calcium carbonate composite emulsion. Dry the emulsion at 200°C for 5 minutes to obtain a nano-porous gas separation functional material with carbonate groups, which can be used for H 2 O, NH 3 Separation and enrichment of other gases.

Embodiment 3

[0039] In a 250ml round-bottomed three-necked bottle, add 70 grams of nano-titanium dioxide sol, 100 grams of epoxy-benzyl methacrylate-styrene-acrylamide emulsion (monomer molar ratio 4: 1: 3) obtained by miniemulsion polymerization : 2), stirred at room temperature for 24 hours to obtain epoxy-benzyl methacrylate-styrene-acrylamide polymer / nano-barium hydroxide composite emulsion, and this emulsion was dried at 80°C for 10 hours to obtain Nanoporous gas separation functional materials for CO 2 Separation and enrichment of gases such as gases.

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Abstract

The invention belongs to the technical field of nanometer porous materials, and particularly relates to a gas separation functional material, and a preparation method and application thereof. The functional material comprises aqueous inorganic nanoparticles, monodisperse aqueous polymer microspheres and a nonessential auxiliary agent, wherein functional modification groups capable of being combined with gas molecules are modified on the surfaces of the polymer microspheres or (and) the inorganic nanoparticles; a polymer / inorganic nanoparticle composite emulsion with adsorbable gas functional modification groups can be obtained by adopting an in situ polymerization method or a blending method; and after the moisture is volatilized, the polymer and the inorganic nanoparticles are self-assembled to form the gas separation functional material with a nanometer porous structure. The method and the application realize identification, adsorption and adsorption-desorption adjustment of the nanometer porous structure to gas molecules if CO2, H2S, SO2, HCl, Cl2, NO2, H2O, NH3 and the like by regulating and controlling the types of the polymer or (and) the inorganic nanoparticles, the particle diameters and the bore diameters of the functional modification groups, the microspheres and the inorganic nanoparticles on the surface, and the like.

Description

technical field [0001] The invention belongs to the technical field of nanoporous materials, and in particular relates to a gas separation functional material and its preparation method and application. Background technique [0002] Due to their unique properties, ordered nanoporous materials have shown great application prospects in the fields of photoelectric conversion materials, catalytic materials, drug release, biochemistry, and separation materials. In the past ten years, people have discovered and prepared many inorganic or organic nanoporous materials. Among them, inorganic nanoporous materials have high strength and good order, but are brittle and poorly flexible; polymer nanoporous materials are highly flexible but low in strength. , It is difficult to obtain an ordered structure. How to obtain environmentally friendly nanoporous materials in a large area, so that their structure is orderly and controllable, with high flexibility and high strength, is still a key...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02B01J13/02
Inventor 游波赵成坚武利民傅岚
Owner FUDAN UNIV
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