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Bimetal MOFs material for CO2 capture and preparation method and application thereof

A bimetal and metal technology, applied in the field of bimetal MOFs materials and preparation, can solve the problems of large steric hindrance effect, unfavorable carbon dioxide adsorption, decrease in specific surface and pore volume, etc., and achieves low equipment corrosion and simple preparation method. , the effect of easy regeneration process

Inactive Publication Date: 2021-06-18
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ligands of this type of material have a large steric hindrance effect, which reduces the specific surface and pore volume of the material, which is not conducive to its carbon dioxide adsorption under high pressure.

Method used

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  • Bimetal MOFs material for CO2 capture and preparation method and application thereof
  • Bimetal MOFs material for CO2 capture and preparation method and application thereof
  • Bimetal MOFs material for CO2 capture and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 9.50 mmol Timethylene, 12.825 mmol nitrate hydrate and 1.425 mmol of nickel nickel hydrate were dissolved in a mixed solution of 32 mL of N, N-dimethylformamide / ethanol, respectively. The above two solutions were moved into the glass bottle, heated at 60 ° C for 36 h. After the reaction was completed, the centrifugation was washed, dried in vacuo to give a bimetallic MOFS material MOFS-1.

[0038] The above-described adsorbed material was sieved, and 0.5 g of the adsorbent was loaded into the quartz tube, and gas adsorption was performed on a fixed bed. First, the adsorbent activates 3 h at 120 ° C, argon protection, and air speed is 4000 ml h. -1 . Subsequent Co at 25 ° C 2 Gas adsorption (mixed gas CO 2 : N 2 = 15: 85), air speed is 4000ml h -1 The gas adsorbers detect the exhaust gas online. CO 2The amount of adsorption is shown in Table 1.

Embodiment 2

[0040] 9.50 mmol 均 均 三 三 水, 11.40 mmol of nitrate hydrate and 2.85 mmol of nitrate hydrate were dissolved in a mixed solution of 32 mL of N, N-dimethylformamide / ethanol, respectively. The above two solutions were moved into the glass bottle, and 24 h was heated at 80 ° C. After the reaction, centrifugation was washed, dried in vacuo to give a bimetallic MOFS material MOFS-2.

[0041] The above-described adsorbed material was sieved, and 0.5 g of the adsorbent was loaded into the quartz tube, and gas adsorption was performed on a fixed bed. First, the adsorbent activates 2.5 h at 150 ° C, argon protection, and air speed of 3500 ml h. -1 . Subsequent CO at 35 ° C 2 Gas adsorption (mixed gas CO 2 : N 2 = 15: 85), air speed is 3500ml h -1 The gas adsorbers detect the exhaust gas online. CO 2 The amount of adsorption is shown in Table 1.

Embodiment 3

[0043] 9.50 mmol 均 均 三 三, 水 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶 溶. The above two solutions were moved into a glass bottle and heated at 120 ° C for 18 h. After completion of the reaction, the centrifugation was washed, and dried in vacuo to obtain a bimetallic MOFS material MOFS-3.

[0044] The above-described adsorbed material was sieved, and 0.5 g of the adsorbent was loaded into the quartz tube, and gas adsorption was performed on a fixed bed. First, the adsorbent activates 2 h at 200 ° C, argon protection, and air speed of 3000 ml h. -1 . Subsequent CO at 65 ° C 2 Gas adsorption (mixed gas CO 2 : N 2 = 15: 85), the speed is 3000ml h -1 The gas adsorbers detect the exhaust gas online. CO 2 The amount of adsorption is shown in Table 1.

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Abstract

The invention discloses a bimetallic MOFs material for CO2 capture and a preparation method and application thereof, and belongs to the technical field of material science and chemical engineering. The bimetallic MOFs material is prepared by taking copper nitrate hydrate and nitrate hydrate of transition metal as two metal central ion sources and trimesic acid as a ligand material. The specific preparation method comprises the steps that copper nitrate hydrate, nitrate hydrate of transition metal and trimesic acid are dissolved in a solvent to prepare solutions, the solutions are mixed and then subjected to a hydrothermal reaction, and centrifugation, washing and drying are carried out to obtain the bimetallic MOFs material. The bimetallic MOFs material is tableted and sieved, and a 20-40-mesh material is taken; degassing treatment is carried out at normal pressure; and adsorption is carried out in an atmosphere containing CO2 gas at normal pressure. Compared with an original material HKUST-1, the CO2 adsorption capacity of the bimetallic MOFs material can be remarkably improved through the bimetallic synergistic effect of the bimetallic MOFs material.

Description

Technical field [0001] The present invention relates to the field of material science and chemical engineering, and there is a specific to CO 2 Double metal MOFS materials and preparation methods and applications. Background technique [0002] With the acceleration of human modernization, fossil energy consumption continues to rise, resulting in an increase in the emissions of carbon dioxide, and a series of environmental issues come. Carbon dioxide as a typical "greenhouse gas", the contribution rate of the greenhouse effect is as high as 63%, which is the main reason for global warming. As of December 2020, the carbon dioxide concentration in the global atmosphere has reached 413ppm, which has grown nearly 45% compared to the initial stage of the industrial revolution. Therefore, how to reduce the content of carbon dioxide in the atmosphere becomes the focus of people's attention. In response to this situation, OECD institutions clearly indicate that Carbon DCC and Sealing Tech...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01D53/02B01J20/22
CPCB01D53/02B01D2257/504B01J20/226C08G83/008Y02P20/151Y02C20/40
Inventor 李磊肖福魁赵海宏赵宁李枫
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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