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Efficiently trapping asphaltene-type materials from direct coal liquefaction residue using alkylsulfate-based ionic liquids
Bai, Lu1,2; Nie, Yi1; Huang, Jincheng1; Li, Yi1; Dong, Haifeng1; Zhang, Xiangping1
2013-10-01
Source PublicationFUEL
Volume112Issue:0Pages:289-294
AbstractAlkylsulfate-based ionic liquids (ILs) were synthesized and used as solid-liquid separation solvents to extract asphaltene-type materials from direct coal liquefaction residue (DCLR). Among the ILs employed, tetraethylammonium ethylsulfate ([E4N][ESO4]) was proved to be a potential solvent for trapping asphaltene-type materials from DCLR due to the higher extraction yield and the lower H/C atomic ratio of the extract. N-methyl-2-pyrrolidone (NMP) was added to reduce the viscosity of [E4N][ESO4]. It also increased the extraction yield and decreased H/C atomic ratio of the asphaltene-type materials. The mechanism of extraction might be concluded that the interactions are formed between ILs or [E4N][ESO4]/NMP mixed solvents and asphaltene-type materials, which disturbs the interactions between DCLR and leads to the dissolution of asphaltene-type materials into solvents. The obtained asphaltene-type materials possessed low H/C atomic ratios, high aromaticities, no ashes and no quinoline insolubles, which meet the requirements of preparing carbon materials. (C) 2013 Elsevier Ltd. All rights reserved.
KeywordIonic Liquids Extraction Asphaltene Direct Coal Liquefaction Residue
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordAROMATIC-HYDROCARBONS ; MIXED-SOLVENT ; EXTRACTION ; DESULFURIZATION ; SEPARATION ; DISPERSION ; SULFATE
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000321735400036
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13352
Collection研究所(批量导入)
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, Coll Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Bai, Lu,Nie, Yi,Huang, Jincheng,et al. Efficiently trapping asphaltene-type materials from direct coal liquefaction residue using alkylsulfate-based ionic liquids[J]. FUEL,2013,112(0):289-294.
APA Bai, Lu,Nie, Yi,Huang, Jincheng,Li, Yi,Dong, Haifeng,&Zhang, Xiangping.(2013).Efficiently trapping asphaltene-type materials from direct coal liquefaction residue using alkylsulfate-based ionic liquids.FUEL,112(0),289-294.
MLA Bai, Lu,et al."Efficiently trapping asphaltene-type materials from direct coal liquefaction residue using alkylsulfate-based ionic liquids".FUEL 112.0(2013):289-294.
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