Equilibrium Hydrate Formation Conditions for the Mixtures of Methane plus Ionic Liquids plus Water

被引：70
|
作者：
Li, Xiao-Sen [1 ,2 ]
Liu, Yi-Jun [1 ,2 ,3 ]
Zeng, Zhi-Yong [1 ,2 ]
Chen, Zhao-Yang [1 ,2 ]
Li, Gang [1 ,2 ,3 ]
Wu, Hui-Jie [1 ,2 ]
机构：
[1] Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
[2] Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100083, Peoples R China
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2011年 / 56卷 / 01期
基金：
中国国家自然科学基金;
关键词：
DUAL FUNCTION INHIBITORS; AQUEOUS-SOLUTIONS; CARBON-DIOXIDE; GAS; GLYCEROL; ALCOHOLS; GLYCOLS;
D O I：
10.1021/je100987q
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The equilibrium hydrate formation conditions for methane in the presence of the aqueous solutions of the five ionic liquids with the mass fraction of 0.1 have been investigated. The data were measured using an isochoric method in the pressure range of (3 to 17) MPa and the temperature range of (276.15 to 289.15) K. It is found that the additions of the ionic liquids shift the methane hydrate equilibrium phase boundary to the temperature and pressure conditions that are unfavorable for the hydrate formation. The dialkylimidazolium-based ionic liquids with the hydroxylated cations exhibit an enhanced effectiveness in inhibiting hydrate formation. For the tetraalkylammonium-based ionic liquids, ones with the shorter alkyl substituents of the cations perform better thermodynamic inhibition effects than ones with the hydroxylated longer alkyl substituents of the cations. Among all of the ionic liquids studied, tetramethyl-ammonium chloride is the most effective one, which is comparable with ethylene glycol.
引用
收藏
页码：119 / 123
页数：5
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