深共晶溶剂碳捕集性能的影响因素研究
Influencing Factors of Deep Eutectic Solvents on Carbon Capture Performance
张宸 1苏亭宇 2张舵咏 1田永强 3吴承刚 4蔡传琦 4朱金庆 4王丽伟1
作者信息
- 1. 上海交通大学机械与动力工程学院,上海 200240
- 2. 上海交通大学中英低碳学院,上海 201306
- 3. 上海交通大学国家电投智慧能源创新学院,上海 200240;国家电投集团新疆能源化工有限责任公司,乌鲁木齐 830000
- 4. 中电投新疆能源化工集团五彩湾发电有限责任公司,昌吉 831100
- 折叠
摘要
近年来碳捕集技术受到了广泛关注,但是尚缺乏高效的碳捕集材料.本文合成了多种不同的深共晶溶剂(DES),从多个角度比较了材料吸附量的差异.乙醇胺(MEA)基的DES的吸附量可以在20℃和0.24 MPa达到4.39 mmol/g,而乙酸(AcOH)基的DES在相同条件下仅能达到0.85 mmol/g.这主要是由于MEA可以和CO2发生化学反应生成氨基甲酸单乙醇酰胺,而AcOH则仅为CO2的物理溶解.DES的吸附量随CO2分压升高而增大,随温度的升高而降低.特别是AcOH-TPAC-7的吸附量在25℃、0.24 MPa下比20℃、0.24 MPa衰减了 40.2％.AcOH-TPAC-7的吸附量随水含量增加而增大,而MEA-TPAC-7呈现相反趋势.
Abstract
Although carbon capture technology has received widespread attention recently,there is still a lack of efficient carbon capture materials.Herein,we synthesized various deep eutectic solvents(DES)and compared the differences in sorption capacity from multiple perspectives.The sorption capacity of DES based on ethanolamine(MEA)can reach 4.39 mmol/g at 20℃ and 0.24 MPa,while DES consisted by acetic acid(AcOH)can only reach 0.85 mmol/g under the same conditions.This is mainly due to the chemical reaction between MEA and CO2 to generate aminoformate monoethanolamide,while AcOH is only the physical dissolution of CO2 molecules.The sorption capacity of DES increases with the enhancement of CO2 partial pressure and decreases with the raise of temperature.Especially,the sorption capacity of AcOH-TPAC-7 attenuates by 40.2％at 25℃ and 0.24 MPa compared to 20℃ and 0.24 MPa.The sorption capacity of AcOH-TPAC-7 increases with the improvement of water content,while MEA-TPAC-7 manifests the opposite trend.
关键词
二氧化碳捕集/深共晶溶剂/吸附性能/吸附量Key words
carbon dioxide capture/deep eutectic solvents/sorption performance/sorption capacity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据