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Feasible ionic liquid-amine hybrid solvents for carbon dioxide capture
Cao, Lingdi1,2; Gao, Jubao1; Zeng, Shaojuan1; Dong, Haifeng1; Gao, Hongshuai1; Zhang, Xiangping1; Huang, Junhua3

Ionic liquid (IL)-amine hybrid solvents have been proved to be an energy-saving system for CO2 capture. Lack of experimental information on the diffusivity and heat of CO2 absorption in IL-amine hybrid solvents hampers the wide application of IL in CO2 capture. In this work, the effects of IL on absorption rate, solubility, diffusivity and heat of CO2 absorption in feasible hybrids of 1-butyl-3-methyl- imidazolium nitrate ([Bmim][NO3]) and monoethanolamine (MEA) have been elaborated using weight method, vapor liquid equilibrium and calorimetric measurement. The results showed that the addition of IL slightly decreases CO2 loading under atmospheric pressure. Based on the measured solubility and calorimeter results, IL is beneficial to improve the physical absorption of CO2 and reduce the heat of absorption in IL-amine hybrids. The diffusivity of CO2 can be maintained at an acceptable level by controlling the concentration of IL. Considering CO2 capacity, kinetics and heat of absorption, the hybrids of 30% MEA + 10% [Bmim][ NO3]+ 60% H2O were recommended. Our work gives the meaningful insights on designing novel IL-amine hybrids for CO2 capture.

KeywordCo2 Capture Ionic Liquids Hybrid Solvents Diffusivity Coefficient Absorption Heat
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordMethyldiethanolamine Plus Water ; Aqueous Alkanolamine Solutions ; Pressure Phase-behavior ; Co2 Capture ; N-methyldiethanolamine ; Physical Solubility ; Monoethanolamine Mea ; Imidazolium Nitrate ; Reversible Capture ; Nitrous-oxide
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Environmental
Funding OrganizationNational Natural Science Foundation of China(21425625 ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ201306) ; 21506219)
WOS IDWOS:000414258300011
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Monash Univ, Sch Chem, Clayton, Vic 3800, Australia
Recommended Citation
GB/T 7714
Cao, Lingdi,Gao, Jubao,Zeng, Shaojuan,et al. Feasible ionic liquid-amine hybrid solvents for carbon dioxide capture[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2017,66:120-128.
APA Cao, Lingdi.,Gao, Jubao.,Zeng, Shaojuan.,Dong, Haifeng.,Gao, Hongshuai.,...&Huang, Junhua.(2017).Feasible ionic liquid-amine hybrid solvents for carbon dioxide capture.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,66,120-128.
MLA Cao, Lingdi,et al."Feasible ionic liquid-amine hybrid solvents for carbon dioxide capture".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 66(2017):120-128.
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