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Application of eutectic ionic liquid/molecular sieve composite material in CO2 capture

A technology of ionic liquids and composite materials, applied in the fields of new materials, carbon neutralization, and carbon peaking, to achieve the effects of simple process, convenient preparation, and safe and stable post-processing process

Inactive Publication Date: 2021-11-19
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Molecular sieves have been publicly reported in gas adsorption and separation (Yu Zhou, Jianlin Zhang, Lei Wang, Xili Cui, Xiaoling Liu, Sie Shing Wong, Hua An, NingYan, Jingyan Xie, CongYu, Peixin Zhang, Yonghua Du, Shibo Xi, Lirong Zheng, Xingzhong Cao, YajingWu, Yingxia Wang, ChongqingWang, Haimeng Wen, Lei Chen, Huabin Xing, JunWang. Science 373, 315–320 (2021)), ionic liquids are also used in gas adsorption, but only applied to gas The absorption separation, while the CO 2 In terms of gas absorption, there is still room for further improvement in terms of operating effect and scalability

Method used

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  • Application of eutectic ionic liquid/molecular sieve composite material in CO2 capture
  • Application of eutectic ionic liquid/molecular sieve composite material in CO2 capture
  • Application of eutectic ionic liquid/molecular sieve composite material in CO2 capture

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Experimental program
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Effect test

Embodiment 1

[0020] Preparation of YCTC-3: Add 1.0 g molecular sieve 13Z (sodium Z type), 1.3 g guaiacol, and 50 g deionized water to the reaction kettle in sequence, stir for 1–2 h at normal temperature and pressure, and then Carry out temperature program with a heating rate of 1 ℃ / min, heat up to 40-50 ℃, keep warm and continue to stir for 8 h, then naturally cool to room temperature under stirring conditions, add 1.0 g of tetraethylenepentamine, and then carry out program-controlled temperature rise. The rate is 0.5 ℃ / min, and the temperature is slowly raised to 40-50 ℃. Stirring is continued at a constant temperature for 12-15 h, then the stirring is stopped and naturally cooled to room temperature for overnight. The resulting mixture is simply filtered or suction filtered, and the solid product is vacuum-dried at 100 ℃ for 2 h to obtain the composite material YCTC-3; the loading amount of the ionic liquid DES is 20% of the mass of the molecular sieve.

Embodiment 2

[0022] Preparation of YCTC-3: Add 1.0 g molecular sieve 5A (calcium A type), 1.0 g choline chloride, and 15 g deionized water to the reaction kettle in turn, stir for 1–2 h at normal temperature and pressure, and then Carry out temperature program with a heating rate of 1 ℃ / min, raise the temperature to 40-70 ℃, keep warm and continue to stir for 8 h, then cool down to room temperature naturally under stirring conditions, add 1.0 g of ethylene glycol, and then carry out program-controlled heating, heating rate 0.5 ℃ / min, slowly increase the temperature to 40-70 ℃, continue to stir at a constant temperature for 8-15 h, then stop stirring and naturally cool to room temperature overnight, the resulting mixture is simply filtered or suction filtered, and the solid product is vacuum-dried at 100 ℃ for 2 h The composite material YCTC-3 was obtained; the loading amount of ionic liquid DES was 11% of the mass of molecular sieve.

Embodiment 3

[0024] Preparation of YCTC-3: Add 1.0 g molecular sieve 4A (sodium type A), 1.0 g amino acid, and 50 g deionized water into the reaction kettle in turn, stir for 24 h under normal temperature and pressure conditions, and then carry out temperature programming. The rate is 0.5 ℃ / min, heat up to 40~70 ℃, keep warm and continue to stir for 10~15 h, stop stirring and naturally cool to room temperature overnight, the resulting mixture is simply filtered or suction filtered, and the solid product is vacuum dried at 100 ℃ The composite material YCTC-3 of DES and molecular sieve was obtained in 2 h; the loading amount of DES was 12 % of the mass of molecular sieve.

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Abstract

The invention discloses an application of a eutectic ionic liquid / molecular sieve composite material in CO2 capture. The YCTC-3 composite material obtained by adopting an eutectic ionic liquid as a gas capturing and binding material and a molecular sieve as a supporting material and a gas adsorption material and combining the eutectic ionic liquid and the molecular sieve material can be applied to the fields of carbon peak reaching and carbon neutralization. Compared with the prior art, the application has the advantages that (1) the raw materials are easy to obtain, the operation process is simple, and the requirement on equipment is not high; (2) compared with other publicly reported CO2 gas adsorption materials, the prepared YCTC-3 composite material has a remarkable progress in effect, and can be applied to the fields of dual-carbon economy and the like; and (3) the composite material is convenient to recycle, can be repeatedly used, is environment-friendly and is easy to industrially amplify.

Description

technical field [0001] The invention relates to a composite material based on molecular sieve materials and deep eutectic ionic liquids, which captures and absorbs CO under natural temperature conditions 2 The gas application method belongs to the fields of carbon peaking, carbon neutralization, and new materials. Background technique [0002] Carbon neutrality means that enterprises, groups or individuals calculate the total amount of greenhouse gas emissions directly or indirectly generated within a certain period of time, and offset their own carbon dioxide emissions through afforestation, energy conservation and emission reduction, so as to achieve zero carbon dioxide emissions. [0003] Existing CO 2 The main treatment methods of waste gas have various technical routes according to the principles and methods of purification. Among them, absorption and adsorption are important means of carbon capture. These two types are currently relatively convenient and widely used m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01J20/22B01J20/28054B01D53/02B01J20/186B01D2257/504Y02C20/40
Inventor 方东徐国栋郑文涛张雪华吴林温小菊王彦卿孙世新林书涵夏桂兵姜海娇
Owner YANCHENG TEACHERS UNIV
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