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Efficient absorption of ammonia with hydroxyl-functionalized ionic liquids
Li, Zhijie1,2; Zhang, Xiangping1; Dong, Haifeng1; Zhang, Xiaochun1; Gao, Hongshuai1; Zhang, Suojiang1; Li, Jianwei2; Wang, Congmin3
2015
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume5Issue:99Pages:81362-81370
Abstract

Ammonia (NH3) emitted from the ammonia synthesis process is a kind of waste chemical resource and a major environmental pollutant. The traditional water scrubbing method suffers from high energy consumption due to the concentrated NH3 from aqueous ammonia. Therefore, it is desirable to develop novel absorbents for the efficient, reversible and environmentally-friendly recovery of NH3. In this paper, a series of hydroxyl-functionalized imidazolium ILs ([EtOHmim]X, X = [NTf2], [PF6], [BF4], [DCA], [SCN] and [NO3]) were designed and prepared. Their physical properties and NH3 absorption capacities under different temperatures and pressures were systematically investigated. The effects of hydroxyl cation, anionic structures, pressure and temperature on absorption performance were sufficiently studied. In addition, the absorption mechanism was investigated in detail by spectral analysis and quantum chemistry calculations. Compared with conventional IL [Emim] X, a higher absorption capacity was achieved by introducing the hydroxyl group on the imidazolium cation. The mechanism results showed the fascinating absorption performance of the task-specific ILs was attributed to the stronger hydrogen bonding interaction between NH3 and the H atom of the hydroxyl group. Considering the excellent absorption performance, high thermal stability, and super reversibility, this type of IL provides great improvement over conventional IL and shows their enormous potential in NH3 recovery.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5ra13730f
Indexed BySCI
Language英语
WOS KeywordH2S ; SO2 ; CO2 ; SOLUBILITIES ; BIS(TRIFLUOROMETHYLSULFONYL)IMIDE ; VISCOSITY ; CAPACITY ; REMOVAL ; DIOXIDE ; CAPTURE
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000362436800057
Citation statistics
Cited Times:41[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19604
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, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
3.Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhijie,Zhang, Xiangping,Dong, Haifeng,et al. Efficient absorption of ammonia with hydroxyl-functionalized ionic liquids[J]. RSC ADVANCES,2015,5(99):81362-81370.
APA Li, Zhijie.,Zhang, Xiangping.,Dong, Haifeng.,Zhang, Xiaochun.,Gao, Hongshuai.,...&Wang, Congmin.(2015).Efficient absorption of ammonia with hydroxyl-functionalized ionic liquids.RSC ADVANCES,5(99),81362-81370.
MLA Li, Zhijie,et al."Efficient absorption of ammonia with hydroxyl-functionalized ionic liquids".RSC ADVANCES 5.99(2015):81362-81370.
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