离子液体；石油沥青质的新型溶剂

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离子液体；石油沥青质的新型溶剂

刘艳升^a; 胡玉峰^a; 王海波^b; 徐春明^a; 纪德军^a; 孙研^a; 郭天民^b

^a State Key Laboratory of Heavy Oil Processing, University of Petroleum, Beijing 102200, China
^b High Pressure Fluid Phase Behavior ＆ Property Research Laboratory, University of Petroleum, Beijing 102200, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2005-08-28 发布日期:2005-08-28
通讯作者: 刘艳升

Ionic Liquids： Novel Solvents for Petroleum Asphaltenes

LIU Yansheng^a; HU Yufeng^a; WANG Haibo^b; XU Chunming^a; JI Dejun^a; SUN Yan^a; GUO Tianmin^b

^a State Key Laboratory of Heavy Oil Processing, University of Petroleum, Beijing 102200, China
^b High Pressure Fluid Phase Behavior ＆ Property Research Laboratory, University of Petroleum, Beijing 102200, China

Received:1900-01-01 Revised:1900-01-01 Online:2005-08-28 Published:2005-08-28
Contact: LIU Yansheng

摘要/Abstract

摘要： The dissolution of petroleum asphaltenes with ionic liquids is studied for the first time. The results show that the ionic liquids could be used as novel solvents for asphaltenes. The important parameters governing the ability of ionic liquids for dissolution of asphaltenes are discussed. It is found that, the ionic liquids based on the cations containing a conjugated aromatic core or the anions which are strong hydrogen bond acceptors are most effective, whereas the ionic liquids containing ＇non coordinating＇ anions such as [BF4]^- and [PF6]^- are nonsolvents for asphaltenes. Increase in the effeective anion charge density enhances the ability of ionic liquids to break the extensive asphaltene associations and thus enhances the solubility of asphaltenes in the ionic liquid. The dissolution ability of ionic liquid decreases apparently with increasing the substituted alkyl chain length of its cationic head ring. Temperature is found to play an important role on dissolution of asphaltenes, and the dissolution can be significantly imoroved bv microwave heatinz.

关键词: 石油;沥青;溶剂;离子液体

Abstract: The dissolution of petroleum asphaltenes with ionic liquids is studied for the first time. The results show that the ionic liquids could be used as novel solvents for asphaltenes. The important parameters governing the ability of ionic liquids for dissolution of asphaltenes are discussed. It is found that, the ionic liquids based on the cations containing a conjugated aromatic core or the anions which are strong hydrogen bond acceptors are most effective, whereas the ionic liquids containing ＇non coordinating＇ anions such as [BF4]^- and [PF6]^- are nonsolvents for asphaltenes. Increase in the effeective anion charge density enhances the ability of ionic liquids to break the extensive asphaltene associations and thus enhances the solubility of asphaltenes in the ionic liquid. The dissolution ability of ionic liquid decreases apparently with increasing the substituted alkyl chain length of its cationic head ring. Temperature is found to play an important role on dissolution of asphaltenes, and the dissolution can be significantly imoroved bv microwave heatinz.

Key words: asphaltenes, ionic liquids, solvents

刘艳升, 胡玉峰, 王海波, 徐春明, 纪德军, 孙研, 郭天民. 离子液体；石油沥青质的新型溶剂[J]. CIESC Journal.

LIU ,Yansheng, HU ,Yufeng, WANG ,Haibo, XU ,Chunming, JI ,Dejun, SUN ,Yan, GUO ,Tianmin. Ionic Liquids： Novel Solvents for Petroleum Asphaltenes[J]. .

离子液体；石油沥青质的新型溶剂

Ionic Liquids： Novel Solvents for Petroleum Asphaltenes

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