摘要
氨基功能型离子液体在常温常压下对CO_2具有较强的吸收选择性能,在分离固定CO_2方面具有较好的应用前景。合成了4种氨基功能型离子液体,对产物进行了IR和~1H NMR表征,探究了这些功能型离子液体的CO_2吸收性能及再生性能。结果表明,4种氨基功能型离子液体均具有强于常规型离子液体的CO_2吸收性能,再生性能良好,可循环使用;离子液体的CO_2溶解度受黏度影响显著,随吸收温度的升高而降低,随吸收压力的升高,吸收剂浓度的增加而增大;强化传质能提高再生效率,多次的再生对离子液体的吸收性能没有明显影响。
Amino-functionalized task-specific ionic liquids are thought to have good application prospects in terms of CO_2 fixation and separation, due to their strong CO_2 absorption with selectivity under ambient conditions. In this study, four task-specific ionic liquids were synthesized, with their structures and properties characterized by IR, 1H NMR. The performances of these four task-specific ionic liquids in terms of CO_2 absorption and regeneration were investigated. It was found that these four task-specific ionic liquids are supervisor to traditional ionic liquids in terms of CO_2 absorption. In addition, these four task-specific ionic liquids showed excellent regeneration performance, which indicated that they could be reused for CO_2 absorption. The solubility of CO_2 in ionic liquids was affected significantly by the viscosity, decreased by increasing the temperature, increased by increasing the pressure and absorbent concentration. Enhanced mass transfer can improve the regeneration efficiency. However, no significant effect on the absorption properties of ionic liquids was observed after multiple regenerations.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2016年第12期5057-5065,共9页
CIESC Journal
基金
江苏省高校自科研究项目(12KJB610003)
江苏省教育厅成果产业化项目(JH09-10)~~
关键词
功能型离子液体
氨基功能化
制备
吸收
再生
task-specific ionic liquids
amino functionalization
preparation
absorption
regeneration
