Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature

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	Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature
	Bai, Lu 1,2; Nie, Yi 1; Li, Yi 1; Dong, Haifeng 1; Zhang, Xiangping 1
刊名	FUEL PROCESSING TECHNOLOGY
	2013-04-01
卷号	108 期号:0 页码:94-100
关键词	Direct coal liquefaction residue Ionic liquids Asphaltenes Extraction
英文摘要	Asphaltenes in direct coal liquefaction residue (DCLR) are highly aromatic and polydisperse mixtures, which are important precursors for producing high value-added carbon materials. In this research, a series of protic ionic liquids (PILs) with organic carboxylate anions were synthesized and applied to extract asphaltenes from DCLR at room temperature. The extracts were characterized by elemental analysis, FTIR, C-13-NMR, quinoline insolubles tests and so on. The results show that asphaltenes with the potential of precursors of carbon materials can be separated from DCLR at room temperature using PILs and the solid-liquid separation is carried out facilely due to the lower viscosities of PILs. The influences of PILs structures on extraction yields and atomic ratios of H/C were also investigated. As alkyl chain length of PILs anions increases, extraction yields of asphaltenes increase while H/C ratios decrease. Moreover, extraction yields vary with various cations of PILs and increase according to the order of N-methylimidazolium ([MIM](+)) < triethylammonium ([TEtA](+)) < 3-methylpyridinium ([MPy](+)), but H/C ratios decrease following the order of N-methylimidazolium ([MIM](+)) > triethylammonium ([TEtA](+)) > 3-methylpyridinium ([MPy](+)). The asphaltenes extracted from DCLR with PILs have the excellent properties for preparing carbon materials, such as lower H/C ratios, higher aromaticities, lower sulfur contents and nearly no quinoline insolubles. (C) 2012 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
关键词[WOS]	ARGONNE PREMIUM COALS ; PHYSICOCHEMICAL PROPERTIES ; SOLVENTS ; DISSOLUTION ; COMPONENTS ; PETROLEUM ; MIXTURES ; PYRIDINE ; OILS ; NMR
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000316510700016
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13747]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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.Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Bai, Lu,Nie, Yi,Li, Yi,et al. Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature[J]. FUEL PROCESSING TECHNOLOGY,2013,108(0):94-100.
APA	Bai, Lu,Nie, Yi,Li, Yi,Dong, Haifeng,&Zhang, Xiangping.(2013).Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature.FUEL PROCESSING TECHNOLOGY,108(0),94-100.
MLA	Bai, Lu,et al."Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature".FUEL PROCESSING TECHNOLOGY 108.0(2013):94-100.