Preparation methods of porous structured material selectively adsorbing and separating CO2 gas

An adsorption separation and selectivity technology, applied in separation methods, separation by adsorption, dispersed particles, etc., to achieve the effects of large output, high yield and simple preparation method

Inactive Publication Date: 2014-09-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Indeed, the development of high physicochemical stability and high CO 2 The adsorption capacity and selectivity of adsorbents, while reducing the regeneration cost of adsorbents, remains a challenging work

Method used

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  • Preparation methods of porous structured material selectively adsorbing and separating CO2 gas
  • Preparation methods of porous structured material selectively adsorbing and separating CO2 gas
  • Preparation methods of porous structured material selectively adsorbing and separating CO2 gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Put zinc oxide (5mmol, 0.407g), 2-methylimidazole (20mmol, 1.642g), nickel acetate (5mmol, 2.448g) into the ball mill jar, then put stainless steel balls and add ethanol 1mL ball mill for 30 minutes , to obtain a green solid. The green solid was washed three times with 60 mL of methanol, and then dried at 60° C. for 12 hours to obtain a purple solid, which was named as ball-milled Zn / Ni-ZIF-8.

[0040] Ball-milled Zn / Ni-ZIF-8 was calcined in a tube furnace at 1000°C for 1 hour under a nitrogen atmosphere to obtain a black solid composite, which was recorded as ball-milled Zn / Ni-ZIF-8-1000, with a yield of 36%, namely Selective adsorption and separation of CO according to the present invention 2 Pore ​​structure material of gas.

[0041] We carried out X-ray powder diffraction (PXRD) characterization, transmission electron microscopy (TEM) characterization, Raman characterization and X-ray photoelectron spectroscopy (XPS) analysis on the material. The gas adsorption c...

Embodiment 2

[0045] Put zinc oxide (4mmol, 0.3265g), 2-methylimidazole (20mmol, 1.642g), nickel acetate (4mmol, 1.9584g) into the ball mill jar, then put stainless steel balls and add ethanol 1mL ball mill for 20 minutes , to obtain a green solid. The green solid was washed three times with 60 mL of methanol, and then dried at 60° C. for 12 hours to obtain a purple solid, which was named as ball-milled Zn / Ni-ZIF-8.

[0046] Ball-milled Zn / Ni-ZIF-8 was calcined in a tube furnace at 900°C for 0.5 hours under a nitrogen atmosphere to obtain a black solid composite, which was called ball-milled Zn / Ni-ZIF-8-1000, with a yield of 35%, namely Selective adsorption and separation of CO according to the present invention 2 Pore ​​structure material of gas.

[0047] We carried out X-ray powder diffraction (PXRD) characterization, transmission electron microscopy (TEM) characterization, Raman characterization and X-ray photoelectron spectroscopy (XPS) analysis on the material. The gas adsorption ca...

Embodiment 3

[0050] Put zinc oxide (3.33mmol, 0.271), 2-methylimidazole (20mmol, 1.642g), nickel acetate (6.66mmol, 3.2607g) into the ball mill jar, then put stainless steel balls and add 1mL ethanol ball mill for 50 minutes, a green solid was obtained. The green solid was washed three times with 60 mL of methanol, and then dried at 60° C. for 12 hours to obtain a purple solid, which was named as ball-milled Zn / Ni-ZIF-8.

[0051] The ball-milled Zn / Ni-ZIF-8 was calcined at 700°C for 3 hours in a nitrogen atmosphere in a tube furnace to obtain a black solid composite, which was recorded as ball-milled Zn / Ni-ZIF-8-1000, with a yield of 35.5%, namely Selective adsorption and separation of CO according to the present invention 2 Pore ​​structure material of gas.

[0052] We carried out X-ray powder diffraction (PXRD) characterization, transmission electron microscopy (TEM) characterization, Raman characterization and X-ray photoelectron spectroscopy (XPS) analysis on the material. The gas a...

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Abstract

The invention discloses preparation methods of a porous structured material selectively adsorbing and separating a CO2 gas, and belongs to the technical field of porous structured material preparation. A preparation method 1 comprises the following steps: putting zinc oxide, 2-methylimidazole and acetate in a ball milling jar, adding small stainless steel balls, adding ethanol, and carrying out ball milling to obtain a solid a; 2, cleaning the solid a by using methanol, and drying at 60DEG C to obtain a solid b; and calcining the solid b in a tubular furnace in nitrogen atmosphere to obtain a solid c which is the porous structured material. A preparation method 2 comprises the following steps: adding a nitrate A, 2-methylimidazole and a nitrate B into a solvent, mixing and stirring at normal temperature, centrifuging to obtain a solid d, cleaning the solid d by using methanol, and drying at 60DEG C to obtain a solid e; and calcining the solid e in the tubular furnace in nitrogen atmosphere to obtain a solid f which is the porous structured material. The methods have the advantages of simplicity, high yield, large output, extremely few solvent, environmental protection and high efficiency.

Description

technical field [0001] The invention relates to selective adsorption and separation of CO 2 A method for preparing gas pore structure materials, specifically related to the preparation of selective adsorption and separation of CO by using metal-organic framework materials as raw materials 2 The invention relates to a method for preparing a gas pore structure material, belonging to the technical field of pore structure material preparation. Background technique [0002] carbon dioxide (CO 2 ) is the main greenhouse gas for global warming and also an important carbon raw material. CO capture from flue gas of coal-fired power plants 2 It is considered to be an important way to reduce carbon emissions and sustainable development of the environment. Extracted natural gas (CH 4 ) also contains CO 2 , CO 2 The presence of natural gas reduces the energy content of natural gas, and at the same time, during the transportation of natural gas, CO 2 Corrosion of pipelines affects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/28B01J20/30B01D53/02
CPCY02C10/08Y02C20/40
Inventor 胡长文李锐王博任晓倩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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