Density, Viscosity, and Performances of Carbon Dioxide Capture in 16 Absorbents of Amine + Ionic Liquid + H2O, Ionic Liquid + H2O, and Amine + H2O Systems

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• 作者：Yansong Zhao ; Xiangping Zhang ; Shaojuan Zeng ; Qing Zhou ; Haifeng Dong ; Xiao Tian ; Suojiang Zhang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2010
• 出版时间：September 9, 2010
• 年：2010
• 卷：55
• 期：9
• 页码：3513-3519
• 全文大小：204K
• 年卷期：v.55,no.9(September 9, 2010)
• ISSN：1520-5134

文摘

A series of novel ionic liquids, 2-aminoethanol tetrafluoroborate ([MEA][BF₄]), 2-[2-hydroxyethyl(methyl)amino] ethanol tetrafluoroborate ([MDEA][BF₄]), 2-[2-hydroxyethyl(methyl)amino] ethanol chloride ([MDEA][Cl]), 2-[2-hydroxyethyl(methyl)amino] ethanol phosphate ([MDEA][PO₄]), and 2-[2-hydroxyethyl(methyl)amino] ethanol sulfate ([MDEA][SO₄]), were synthesized and characterized for carbon dioxide capture in this work. Densities and viscosities of ionic liquids (1-butyl-3-methylimidazolium tetrafluoroborate, [MEA][BF₄], [MDEA][BF₄], [MDEA][Cl], [MDEA][PO₄], and [MDEA][SO₄]), amines + ionic liquids + H₂O, ionic liquids + H₂O, and amines + H₂O were measured at temperatures ranging from (303.15 to 343.15) K at different mass fractions. These 16 different absorbents were prepared by mixing two or three compounds of 2-aminoethanol (MEA), 2-[2-hydroxyethyl(methyl)amino] ethanol (MDEA), 2-[bis(2-hydroxyethyl)amino] ethanol (TEA), ionic liquids, and water. The carbon dioxide capture rate and carbon dioxide capture capacity in the 16 different absorbents were measured at 303.15 K and 1.50 MPa. The experimental results showed that the viscosities of these absorbents are less than 17.00 mPa·s at 303.15 K. Among these absorbents, the MDEA + [MDEA][Cl] + H₂O + piperazine system shows the best performance on carbon dioxide capture.