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Selective Separation of Hydrogen Sulfide with Pyridinium-Based ionic Liquids
Wang, Xue1,2; Zeng, Shaojuan1; Wang, Junli3; Shang, Dawei1; Zhang, Xiangping1,4; Liu, Jindun2; Zhang, Yatao2
2018-01-31
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume57Issue:4Pages:1284-1292
AbstractIn this work, pyridinium-based ionic liquids (ILs) were prepared and showed excellent performance in selective separation of H2S owing to existing active proton in H2S molecule. A series of pyridinium-based ILs were synthesized and characterized, and their physical properties including density, viscosity, and thermal decomposition temperatures as well as H2S separation performances were systematically studied. The results indicated that the solubilities of H2S and CO, in ILs increased significantly with increasing pressure and decreased with increasing temperature, while slightly increased with the growing length of the alkyl chains on the cations. On the basis of the analysis of experimental results, the molar solubility of H2S in these ILs declined following the order: [CE6Py][SCN] > [C6Py] [SCN] > [C4Py][SCN] > [C4Py][NTf2] > [C4Py][NO3] > [C4Py][BF4]. Further, the results revealed that the Henry's law constants of H2S in the corresponding ILs were much lower than those of CO2, indicating that the ILs could effectively and selectively separate H2S. Among the studied ILs with the same cation, [C4Py][SCN] had the highest H2S/CO2 selectivity up to 8.99 at 303.15 K, which was about 1.5-4 times larger than that of the conventional imidazolium-based ILs. Moreover, the [C4Py][SCN] could also keep the stable absorption performance after five consecutive absorption and desorption cycles, implying that ILs could serve as good absorbents for H2S separation application.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.iecr.7b04477
Indexed BySCI
Language英语
WOS KeywordPRESSURE PHASE-BEHAVIOR ; CARBON-DIOXIDE ; HIGHLY EFFICIENT ; CO2 CAPTURE ; SOLUBILITY ; H2S ; ABSORPTION ; MIXTURES ; SO2 ; HEXAFLUOROPHOSPHATE
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key R&D Program of China(2017YFB0603401-03) ; National Natural Science Foundation of China(21425625 ; Beijing hundreds of leading talents training project of science and technology(Z171100001117154) ; 21506219 ; U1662122 ; 21676271)
WOS IDWOS:000424313700018
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24030
Collection多相复杂系统国家重点实验室
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.Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China
3.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xue,Zeng, Shaojuan,Wang, Junli,et al. Selective Separation of Hydrogen Sulfide with Pyridinium-Based ionic Liquids[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2018,57(4):1284-1292.
APA Wang, Xue.,Zeng, Shaojuan.,Wang, Junli.,Shang, Dawei.,Zhang, Xiangping.,...&Zhang, Yatao.(2018).Selective Separation of Hydrogen Sulfide with Pyridinium-Based ionic Liquids.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,57(4),1284-1292.
MLA Wang, Xue,et al."Selective Separation of Hydrogen Sulfide with Pyridinium-Based ionic Liquids".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 57.4(2018):1284-1292.
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