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

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature
	Bai, L. ; Nie, Y. ; Li, Y. ; Dong, H. F. ; Zhang, X. P.
	2013
会议名称	6th Asia Pacific Chemical Reaction Engineering Symposium (APCRE)
会议日期	SEP 18-21, 2011
会议地点	Beijing, PEOPLES R CHINA
关键词	Direct coal liquefaction residue Ionic liquids Asphaltenes Extraction ARGONNE PREMIUM COALS PHYSICOCHEMICAL PROPERTIES SOLVENTS DISSOLUTION COMPONENTS PETROLEUM MIXTURES PYRIDINE OILS NMR
其他题名	Fuel Process. Technol.
页码	94-100
中文摘要	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.
收录类别	CPCI
会议网址	://WOS:000316510700016
会议录	Fuel Processing Technology
语种	英语
内容类型	会议论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11065]
专题	过程工程研究所_研究所（批量导入）
推荐引用方式 GB/T 7714	Bai, L.,Nie, Y.,Li, Y.,et al. Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature[C]. 见:6th Asia Pacific Chemical Reaction Engineering Symposium (APCRE). Beijing, PEOPLES R CHINA. SEP 18-21, 2011.://WOS:000316510700016.