摘要
合成了两种传统型离子液体[bmim]BF4和[emim]BF4及含有胺基和羟基的功能型离子液体[NH2P-mim]Br、[NH2-e-mim]BF4、[OH-e-mim]Br,并对合成的离子液体进行IR和1 H NMR表征。常温常压条件下,对所合成的离子液体开展CO2吸收性能实验,发现胺基改性离子液体[NH2P-mim]Br、[NH2-e-mim]BF4和羟基改性离子液体[OH-e-mim]Br的CO2饱和吸收量分别是常规离子液体的3～9倍和1～2倍,且含有乙基官能团的离子液体吸收平衡时间普遍较短。最终探讨了温度、CO2分压等对功能型离子液体吸收CO2过程的影响。
Two kinds of traditional ionic liquids（BF4,BF4） and three kinds of functional ionic liquids containing amino group and hydroxy group（]Br,]BF4,]Br） were synthesized.IR,1H NMR were used to determine the structures and properties of these ionic liquids.CO2 adsorptive experiments were made in a laboratory bench-scale system with the ionic liquids at atmosphere pressure and room temperature to determine the parameters of the CO2 saturated adsorption and its adsorptive balance time.Comparing the differences of CO2 adsorptive performance with the functional and traditional ionic liquids,it was found that CO2 saturated adsorption capabilities of the functional ionic liquids with amino group（]Br,]BF4） and hydroxyl group（]Br） were 3—9 times and 1—2 times greater than the unmodified ionic liquid respectively,the functional ionic liquids containing ethyl functional groups always had shorter adsorption balance time.Finally,the influence of the temperature and CO2 partial pressure on the process of functional ionic liquid adsorption of CO2 was discussed.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2012年第1期139-145,共7页
CIESC Journal
基金
国家自然科学基金项目(50976043)
浙江大学能源清洁利用国家重点实验室开放基金项目(ZJUCEU2009019)~~
关键词
功能型离子液体
二氧化碳
吸收
functional ionic liquids
carbon dioxide
absorption
