Monoethanolamine+2-methoxyethanol mixtures for CO2 capture: Density, viscosity and CO2 solubility

Guo, Hui; Li, Hui; Shen, Shufeng

doi:10.1016/j.jct.2018.12.028

Cited by 40 publications

(23 citation statements)

References 35 publications

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“…Experimental densities and viscosities, obtained from the measurements for liquid pure compounds and standard samples, have been presented in the Supporting information (SI) Table S1 together with the literature values. − We have found a good agreement between the experimental density data obtained in this work and the literature data for all chemicals with an average absolute relative deviation (AARD) within 0.20%, as shown in Figure . Among them, large deviations of density are from EGEE compared with the work of Carvalho et al, which may be due to the difference of water content and purity for this solvent.…”

Section: Resultssupporting

confidence: 68%

Density, Viscosity, and Excess Properties of Binary Mixtures of 2-(Methylamino)ethanol with 2-Methoxyethanol, 2-Ethoxyethanol, and 2-Butoxyethanol from 293.15 to 353.15 K

Shi

Guo

et al. 2019

J. Chem. Eng. Data

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Blends of amines with alkoxyethanols have been potentially used as alternative absorbents to conventional aqueous amines for energy-efficient CO2 capture, due to the lower specific heat capacity and enthalpy of vaporization of organic solvents than water. In this work, densities and viscosities were measured at atmospheric pressure for binary liquid mixtures of 2-(methylamino)ethanol (MAE) + 2-methoxyethanol (EGME), MAE + 2-ethoxyethanol (EGEE), and MAE + 2-butoxyethanol (EGBE) over the entire composition range and at temperatures of 293.15–353.15 K. The excess molar volume and viscosity deviations were also calculated and fitted by the Redlich–Kister equation. The calculated values of density and viscosity from the proposed correlations are in good agreement with the experimental values, with average absolute relative deviations within 0.06 and 1.23% for density and viscosity, respectively. The variations of excess or deviation properties with temperature and components were also discussed in terms of intermolecular interactions and structural effects.

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Section: Resultssupporting

confidence: 68%

Density, Viscosity, and Excess Properties of Binary Mixtures of 2-(Methylamino)ethanol with 2-Methoxyethanol, 2-Ethoxyethanol, and 2-Butoxyethanol from 293.15 to 353.15 K

Shi

Guo

et al. 2019

J. Chem. Eng. Data

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“…Most interestingly, a non-linear trend was observed in the loaded and unloaded solution densities. Guo et al (2019) demonstrated that the increased carbon loading is due to the increased partial pressure of CO 2 . The majority of the research only discusses the solvents' viscosity, density and temperature effects and fails to interpret the other additional physicochemical properties such as pH, carbon loading, surface tension, turbidity, alkalinity and its interdependent characteristics.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on CO2 absorption and physicochemical characteristics of different carbon-loaded aqueous solvents

Perumal¹,

Karunakaran²,

Ambedkar³

et al. 2020

Environ Sci Pollut Res

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The anthropogenic carbon dioxide (CO 2 ) denseness in the earth's atmosphere is increasing day-to-day by combusting fossil fuels for power generation. And, it is the most important greenhouse gas (GHG) responsible for 64% of global warming. Solvent-based carbon capture gained more attention towards researchers because of its easiness to integrate with the coal-fired power plant without significant modifications. During CO 2 absorption, the physical property of the solvent gets changed. A change in the solvent's physicochemical property affects further CO 2 absorption, thereby increasing the carbon-capture energy demand. The present experimental study encompasses CO 2 absorption studies using 30 wt% aqueous monoethanolamine (MEA), 2-amino-2methyl-1-propanol (AMP) and piperazine (PZ) followed by the detailed analysis of physicochemical properties (pH, carbon loading (α), viscosity (μ), density (ρ) and surface tension (σ)) of various CO 2 -loaded solutions. The results revealed that these properties are exhibiting interdependent eccentrics. Furthermore, an empirical model was developed to predict the carbon loading of the tested solvents. This model includes the tested physicochemical properties, reaction mixture temperature, diffusivity and change in the mass of solvent during carbon loading. In addition, an empirical model for viscosity as a function of temperature, carbon loading and molecular weight of solvents was developed. These models appear to predict the carbon loading and the viscosity well with greater accuracy.Keywords CO 2 capture . Carbon loading . Diffusivity . Viscosity . Surface tension . Empirical modelling Highlights • Detailed analysis on physicochemical characteristics of different carbon-loaded 30 wt% aqueous MEA/AMP/PZ solutions.• Non-dimensional model to predict the carbon loading of the 30 wt% aqueous MEA/AMP/PZ solution was developed.• In addition, a predictive model for viscosity as a function of solvent molecular weight, temperature and carbon loading of the 30 wt% aqueous MEA/AMP/PZ solution was formulated with greater accuracy.

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“…Volumetric Properties. Excess molar volume, V E , given by eq 1, 32 represents the deviation from an ideal mixing volume and is crucial in describing the effect of temperature or pressure on the real behavior…”

Section: Theoriesmentioning

confidence: 99%

“…Excess molar volume, V E , given by eq , represents the deviation from an ideal mixing volume and is crucial in describing the effect of temperature or pressure on the real behavior where n is the number of components; V represents the molar volume of the solution; x i is the mole fraction of the pure component; V i and M i are the molar volume and the molecular weight of component i , respectively; and ρ is the measured density of the binary or ternary solutions. The correlation between the molar fraction of the components and V E of the binary solutions were determined by the Redlich–Kister equation where A i represents the adjustable parameter, n is the degree of the polynomial, and x 1 and x 2 are the mole fractions of components 1 and 2, respectively.…”

Section: Theoriesmentioning

confidence: 99%

Densities and Viscosities of Binary and Ternary Solutions of Triethylenetetramine, 2-Amino-2-methyl-1-propanol, and Water for Carbon Dioxide Capture

et al. 2021

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The densities and viscosities of three solutions, namely, two binary solutions [triethylenetetramine (TETA) + H2O and TETA + 2-amino-2-methyl-1-propanol (AMP)] and one ternary solution (TETA + AMP + H2O) were measured at atmospheric pressure and in the temperature range of 303.15 to 343.15 K. Their viscometric and volumetric characteristics, such as the excess molar volume (V E), partial molar volume (V̅ i ), excess partial molar volume (V̅ i E), partial molar volume at infinite dilution (V̅ i ∞), excess partial molar volume at infinite dilution (V̅ i E,∞), apparent molar volume (V φ.i ), viscosity deviation (Δη), molar Gibbs free energy (ΔG), molar entropy (ΔS), and molar enthalpy (ΔH), were calculated to determine the viscous flows of the solutions, and they could also explain the empirical results theoretically. The degrees of the decrease in viscosities and densities of the solutions were different. The variations in the properties were also analyzed through their intermolecular interactions and molecular structures. Additionally, Δη and V E were obtained by the Redlich–Kister model, for the binary solutions, and the Cibulka model, for the ternary solution. With the given standard deviations, σ ≤ 3.55, for the binary solutions, and σ = 3.98, for the ternary solution, the viscosity data were parameterized by the Eyring–non-random two-liquid model. The obtained thermodynamic properties were reliable and could be employed in the design and optimization of a CO2-capture process, utilizing the studied solutions.

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Monoethanolamine+2-methoxyethanol mixtures for CO2 capture: Density, viscosity and CO2 solubility

Cited by 40 publications

References 35 publications

Density, Viscosity, and Excess Properties of Binary Mixtures of 2-(Methylamino)ethanol with 2-Methoxyethanol, 2-Ethoxyethanol, and 2-Butoxyethanol from 293.15 to 353.15 K

Density, Viscosity, and Excess Properties of Binary Mixtures of 2-(Methylamino)ethanol with 2-Methoxyethanol, 2-Ethoxyethanol, and 2-Butoxyethanol from 293.15 to 353.15 K

Experimental investigation on CO2 absorption and physicochemical characteristics of different carbon-loaded aqueous solvents

Densities and Viscosities of Binary and Ternary Solutions of Triethylenetetramine, 2-Amino-2-methyl-1-propanol, and Water for Carbon Dioxide Capture

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