摘要
开发探索具备吸收容量高、循环吸收效果好、无腐蚀性等优势的新型高效吸收剂,是化学溶剂吸收CO_(2)的研究热点。离子液体已被证明是最具潜力的吸收剂之一,具有较宽的温度范围、极低的饱和蒸汽压、良好的化学稳定性和热稳定性,且其独特的结构可调性质,为设计高吸收容量离子液体绿色吸收剂创造了条件。综述了离子液体作为CO_(2)吸收剂的研究进展,包括阳离子氨基功能化离子液体、阴阳离子双氨基功能化离子液体、非氨基功能化离子液体,并分析了离子液体捕集CO_(2)原理。总结了离子液体复配溶剂捕集CO_(2)相较纯离子液体的优化潜力及研究进展,包括离子液体复配醇胺溶液、离子液体复配胺类相变吸收剂。进一步对比了离子液体及复配溶剂在不同温度下的吸收容量和黏度,指出了离子液体复配溶剂用于捕集CO_(2)的发展方向。基于研究现状与工业化应用需求,提出应开发兼具低能耗、高碳容和高吸收速率的新型离子液体吸收剂,并对其发展前景进行了展望。
The current research emphasis on CO_(2) capture through chemical solvents absorption revolves around exploring innovative and efficient absorbents with advantages such as high absorption potential,good recycling performance,and non-corrosiveness.Ionic liquids have been demonstrated to be one of the most promising absorbents,possessing a broad temperature range,low saturated vapor pressure,decently chemical stability,and thermal stability.Their unique properties,including adjustable structural characteristics,offer significant potential for the development of eco-friendly ionic liquids absorbents with high absorption capacity.The research progress of ionic liquids as CO_(2) absorbents was outlined,including cationic amino-functionalized ionic liquids,anionic and cationic dual-amino-functionalized ionic liquids,and non-amino functionalized ionic liquids.The mechanisms of CO_(2) capture by ionic liquids were also analyzed.The potential for optimizing and advancing research in CO_(2) capture was compared between ionic liquids mixed solvents and pure ionic liquids,including ionic liquids mixed with alcohol amine solutions and ionic liquids mixed with amine-based phase change absorbents.The absorption capacity and viscosity of ionic liquids and mixed solvents at different temperatures were further compared,pointing out the direction of development for the use of ionic liquids mixed solvents in capturing CO_(2).Based on current research status and industrial application needs,it is proposed that new types of ionic liquids absorbents should be developed,which have the characteristics of low energy consumption,high carbon capacity and high absorption rate.The prospects for their development were also discussed.
作者
赵唯
刘立
马晓辉
ZHAO Wei;LIU Li;MA Xiaohui(Sinosteel Wuhan Safety&Environmental Protection Research Institute Co.,Ltd.,Wuhan 430081,Hubei,China;Sinosteel Tiancheng Environmental Protection Science&Technology Co.,Ltd.,Wuhan 430205,Hubei,China)
出处
《低碳化学与化工》
CAS
北大核心
2023年第3期107-115,共9页
Low-Carbon Chemistry and Chemical Engineering
基金
湖北省自然科学基金(2022CFB846)。
