CAS OpenIR
Highly efficient and reversible absorption of NH3 by dual functionalised ionic liquids with protic and Lewis acidic sites
Shang, Dawei1,2; Zeng, Shaojuan1; Zhang, Xiangping1,3; Zhang, Xiaochun1; Bai, Lu1; Dong, Haifeng1
2020-08-15
Source PublicationJOURNAL OF MOLECULAR LIQUIDS
ISSN0167-7322
Volume312Pages:7
AbstractAmmonia (NH3) pollution poses a serious environmental threat. Ionic liquids (ILs) are regarded as potential solvents to treat NH3-containing gases because of their unique properties, including tunable structures and high affinity for NH3 molecules. In order to achieve an efficient and reversible absorption of NH3, a series of profit ionic liquids (PILs) with multiple active sites were designed by introducing acidic protons, as well as the Li+ ion into ILs, resulting in PILs with two acidic protons on cations ([2-Mim][NTf2] and [Im][NTf2]), as well as dual functionalised PILs with a Lewis acidic Li+-based anion and acidic protons on cations, namely, [2-Mim][Li (NTf2)(2)] and [Eim][Li(NTf2)(2)]. The NH3 absorption capacity of [Im][NTf2] was found to be 3.46 mol NH3/mol which is the highest among the NH3 absorption capacities of all known nonmetallic ILs, and is ascribed to the hydrogen bonding interactions between the NH3 and PIL molecules. Furthermore, [2-Mim][Li(NTf2)(2)] exhibited the highest NH3 absorption capacity, with a value of 7.01 mol NH3/mol IL, which is about 30 times higher than that of conventional ILs. The superior NH3 absorption performance of the dual functionalised PILs is attributed to the combination of hydrogen bonding interactions between the protons and the NH3 molecules, and the formation of coordination complexes between the Li+-based anion and the NH3 molecules. Moreover, the ILs studied here exhibited excellent recyclability, indicating a great potential for their use in applications involving efficient and reversible NH(3 )absorption from NH3-containing industrial gases. (C) 2020 Elsevier B.V. All rights reserved.
KeywordDual functionalised Protic ionic liquids Li+-based anion NH3 absorption Multiple interactions
DOI10.1016/j.molliq.2020.113411
Language英语
WOS KeywordDEEP EUTECTIC SOLVENTS ; CO2 CAPTURE ; AMMONIA ; SO2 ; SOLUBILITIES ; SIMULATION ; SEPARATION
Funding ProjectNational Key Research and Development Program of China[2017YFB0603401-03] ; National Natural Science Foundation of China[21890764] ; National Natural Science Foundation of China[21776277] ; National Natural Science Foundation of China[U1704251] ; National Natural Science Foundation of China[21978306] ; Beijing Municipal Natural Science Foundation[2182071] ; Hebei Natural Science Foundation[B2019103011]
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Beijing Municipal Natural Science Foundation ; Hebei Natural Science Foundation
WOS IDWOS:000559968600010
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41727
Collection中国科学院过程工程研究所
Corresponding AuthorZeng, Shaojuan
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc,Inst Proc, Beijing 100190, Peoples R China
2.Sinopec Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Shang, Dawei,Zeng, Shaojuan,Zhang, Xiangping,et al. Highly efficient and reversible absorption of NH3 by dual functionalised ionic liquids with protic and Lewis acidic sites[J]. JOURNAL OF MOLECULAR LIQUIDS,2020,312:7.
APA Shang, Dawei,Zeng, Shaojuan,Zhang, Xiangping,Zhang, Xiaochun,Bai, Lu,&Dong, Haifeng.(2020).Highly efficient and reversible absorption of NH3 by dual functionalised ionic liquids with protic and Lewis acidic sites.JOURNAL OF MOLECULAR LIQUIDS,312,7.
MLA Shang, Dawei,et al."Highly efficient and reversible absorption of NH3 by dual functionalised ionic liquids with protic and Lewis acidic sites".JOURNAL OF MOLECULAR LIQUIDS 312(2020):7.
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