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Ionic liquids tailored amine aqueous solution for pre-combustion CO2 capture: Role of imidazolium-based ionic liquids
Gao, Jubao1,2,3; Cao, Lingdi1,2,3,4; Dong, Haifeng1,2,3; Zhang, Xiangping1,2,3; Zhang, Suojiang1,2,3
2015-09-15
Source PublicationAPPLIED ENERGY
ISSN0306-2619
Volume154Issue:SEPPages:771-780
Abstract

The desirable properties of room temperature ionic liquid (RTIL) with low heat capacity, low corrosive, nonvolatile and good CO2 solubility make it possible to tailor the amine aqueous solution for capture of CO2 with low energy consumption. However, the detailed thermal analysis, which is helpful for understanding deeply the energy saving potential for ionic liquids (ILs)-based solvent, is scant. In this work, three different ILs with the same cation, 1-butyl-3-methylimidazolium ([Bmim]), and different anions, including tetrafluoroborate ([BF4]), nitrate ([NO3]), chloride ([Cl]), are used to tailor the N-methyldieth anolamine/piperazine (MDEA/PZ) aqueous solution to assess their role in CO2 capture performance. The results showed that the investigated ILs affect the physical solubility of CO2. Adding [Bmim][BE4] into MDEA/PZ showed the largest CO2 cyclic capacities, whereas, it is the smallest for MDEA/PZ/[Bmim][NO3], which indicates that anion species of the ILs could tune the sensible heat. Based on the calorimeter measured results and modeling estimated results, the reaction enthalpy changes with the addition of different ILs were also observed. The addition of [Bmim][BF4] could reduce the average enthalpy of CO2 dissolution and the sensible heat at 313 K by 30.1% and 20.3%, respectively. Finally, the studies revealed that not only the latent heat of vaporization but also the sensible heat and reaction heat of CO2 capture can be tailored by the choice of ILs. (C) 2015 Elsevier Ltd. All rights reserved.

KeywordIonic Liquids Amine Co2 Capture Integrated Coal Gasification Combined Cycle Regeneration Energy
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.apenergy.2015.05.073
Indexed BySCI
Language英语
WOS KeywordCARBON-DIOXIDE ABSORPTION ; ACTIVATED MDEA SOLUTIONS ; N-METHYLDIETHANOLAMINE ; CARBAMATE CRYSTALLIZATION ; MONOETHANOLAMINE MEA ; PHYSICAL SOLUBILITY ; CORROSION BEHAVIOR ; HYDROGEN-SULFIDE ; POWER-PLANT ; MIXTURES
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000359875100072
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19489
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Gao, Jubao,Cao, Lingdi,Dong, Haifeng,et al. Ionic liquids tailored amine aqueous solution for pre-combustion CO2 capture: Role of imidazolium-based ionic liquids[J]. APPLIED ENERGY,2015,154(SEP):771-780.
APA Gao, Jubao,Cao, Lingdi,Dong, Haifeng,Zhang, Xiangping,&Zhang, Suojiang.(2015).Ionic liquids tailored amine aqueous solution for pre-combustion CO2 capture: Role of imidazolium-based ionic liquids.APPLIED ENERGY,154(SEP),771-780.
MLA Gao, Jubao,et al."Ionic liquids tailored amine aqueous solution for pre-combustion CO2 capture: Role of imidazolium-based ionic liquids".APPLIED ENERGY 154.SEP(2015):771-780.
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