CO2 adsorbent and preparation method thereof

A technology of adsorbent and molding aid, which is applied in the field of CO2 adsorbent and its preparation, can solve the problem of low adsorption capacity, achieve good stability and chemical stability, high practicability, and improve the effect of adsorption capacity

Inactive Publication Date: 2019-12-10
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved in the present invention is to overcome existing CO 2 The defect that the adsorption capacity of the adsorbent is not high, thus providing a CO 2 Adsorbent
[0005] Another technical problem to be solved by the present invention is to overcome existing CO 2 The defect that the adsorption capacity of the adsorbent is not high, thus providing a CO 2 The preparation method of adsorbent

Method used

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  • CO2 adsorbent and preparation method thereof
  • CO2 adsorbent and preparation method thereof
  • CO2 adsorbent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] This embodiment provides a CO 2 Adsorbent and preparation method thereof, the preparation method comprises the following steps:

[0070] 1. Preparation of adsorbent carrier

[0071] 1) Preparation of MIL-101 metal organic framework: 50mL of deionized water, 4.00g of chromium nitrate nonahydrate, 3.00g of terephthalic acid, and 1.00g of hydrofluoric acid were mixed and charged into a polytetrafluoroethylene-lined autoclave, Crystallize at 200°C for 12h. The obtained suspension was washed twice with hot deionized water, dimethylformamide (DMF) and 95% ethanol respectively, dried in an oven at 120 °C for 16 h, and the obtained sample was mixed with 240 mL of ethanol and put into an autoclave, After activation at 80°C for 36h, the precipitated samples were centrifuged and dried in an oven at 120°C for 16h. The obtained sample was mixed with 300 mL of ammonium fluoride aqueous solution with a concentration of 1 mol / L, and then loaded into an autoclave, activated at 50 °C ...

Embodiment 2

[0079] This embodiment provides a CO 2 Adsorbent and preparation method thereof, the preparation method comprises the following steps:

[0080] 1. Preparation of adsorbent carrier

[0081] 1) Preparation of MIL-101 metal organic framework: 70mL of deionized water, 6.00g of chromium nitrate nonahydrate, 1.00g of terephthalic acid, and 0.20g of hydrofluoric acid were mixed and charged into a polytetrafluoroethylene-lined autoclave, Crystallize at 250°C for 6h. The obtained suspension was washed twice with hot deionized water, dimethylformamide (DMF) and 95% ethanol respectively, dried in an oven at 160 °C for 8 h, and the obtained sample was mixed with 240 mL of ethanol and placed in an autoclave, After activation at 120°C for 12h, the precipitated samples were centrifuged and dried in an oven at 160°C for 8h. The obtained sample was mixed with 300 mL of ammonium fluoride aqueous solution with a concentration of 3 mol / L, and then loaded into an autoclave, activated at 80 °C f...

Embodiment 3

[0089] This embodiment provides a CO 2 Adsorbent and preparation method thereof, the preparation method comprises the following steps:

[0090] 1. Preparation of adsorbent carrier

[0091] 1) Preparation of MIL-101 metal organic framework: 55mL of deionized water, 5.50g of chromium nitrate nonahydrate, 2.00g of terephthalic acid, and 0.50g of hydrofluoric acid were mixed and charged into a polytetrafluoroethylene-lined autoclave, Crystallize at 210°C for 10h. The obtained suspension was washed twice with hot deionized water, dimethylformamide (DMF) and 95% ethanol respectively, dried in an oven at 140 °C for 10 h, and the obtained sample was mixed with 240 mL of ethanol and placed in an autoclave, After activation at 110°C for 18h, the precipitated samples were centrifuged and dried in an oven at 140°C for 10h. The obtained sample was mixed with 300 mL of ammonium fluoride aqueous solution with a concentration of 2 mol / L, and then loaded into an autoclave, activated at 70 °...

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Abstract

The invention provides a CO2 adsorbent and a preparation method thereof. An adsorbent carrier comprises a metal organic framework, an inorganic matter and a first forming aid, and an amine source is adopted as an active component. The preparation method comprises the following steps: mixing the metal organic framework, the inorganic matter and the first forming aid, and performing grinding, extrusion forming and first drying in sequence so as to obtain the carrier; adding adding the amine source into a solvent so as to obtain an amine group modified solution; and mixing the amine group modified solution with the carrier, and performing standing and second drying in sequence, so as to obtain the CO2 adsorbent. By adopting the adsorbent carrier prepared from the metal organic framework, theinorganic matter and the first forming aid, the specific surface area of the adsorbent can be increased, and dispersion of the active component can be facilitated, so that the adsorption capacity of the adsorbent can be increased; and as the amine source is adopted as the active component, the adsorption selectivity of the adsorbent can be improved, and the purpose of improving the CO2 adsorptioncapability is finally achieved.

Description

technical field [0001] The invention relates to the field of adsorbents, in particular to a CO 2 Adsorbent and method of making the same. Background technique [0002] With the acceleration of global modernization, CO 2 Gas emissions show an alarming growth trend, followed by ecological problems such as global warming and sea level rise. Develop and implement cost-effective CO 2 Separation, capture, storage and utilization technologies have become the focus of scholars from all over the world. [0003] The adsorption method utilizes the difference in the force between different gas molecules and the active points on the surface of the porous adsorbent to achieve the separation of different components in the gas mixture. Adsorption methods mainly include chemical adsorption and physical adsorption, among which chemical adsorption is more widely used. Chemisorption methods typically load amine sources into various adsorption matrix materials, via CO 2 The chemical reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/26B01J20/30B01D53/02
CPCB01J20/226B01J20/22B01J20/265B01J20/103B01D53/02B01D2257/504Y02C20/40
Inventor 胡小夫汪洋苏军划王争荣夏怀鹏王凯亮李伟王桦
Owner CHINA HUADIAN ENG
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