Experimental and Modeling Study of the Solubility of Carbon Dioxide in Aqueous 30 Mass % 2-((2-Aminoethyl)amino)ethanol Solution

Ma’mun, Sholeh; Jakobsen, Jana P.; Svendsen, Hallvard F.; Juliussen, Olav

doi:10.1021/ie0505209

Cited by 156 publications

(99 citation statements)

References 13 publications

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“…They contain two or more amino groups within one molecule and therefore show high affinity to CO 2 . Several polyamines such as 2-(2-Aminoethylamino)-ethanol (AEAE), Diethylenetriamine (DETA) or mixtures of TETA with Methylediethanolamine (MDEA) have recently been studied in the literature [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Comparative study on differently concentrated aqueous solutions of MEA and TETA for CO2 capture from flue gases

Schäffer

Brechtel

Scheffknecht

2012

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Section: Introductionmentioning

confidence: 99%

“…One polyamine molecule with n amino groups can form polycarbamates consisting of a maximum of n molecules of CO 2 bound as carbamate. NMR spectra analysis were done by [8,6] for AEAE-and DETA-H 2 O-CO 2 systems with two and three amino groups respectively. The studies suggest that in fresh solutions the primary amino groups react first.…”

Section: Introductionmentioning

confidence: 99%

Comparative study on differently concentrated aqueous solutions of MEA and TETA for CO2 capture from flue gases

Schäffer

Brechtel

Scheffknecht

2012

Fuel

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“…109, 117 The heat of absorption for AEEA is similar to that for MEA at the same conditions (for example, about 77 vs. 84 kJ/mol CO 2 at 40 o C for 30 wt. % solutions).…”

Section: Aqueous Absorbents For Co 2 Capturementioning

confidence: 79%

Novel High Capacity Oligomers for Low Cost CO2 Capture

Perry¹,

Grocela-Rocha²,

O’Brien³

et al. 2010

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The novel concept of using a molecule possessing both physi-sorbing and chemi-sorbing properties for post-combustion CO2 capture was explored and mixtures of aminosilicones and hydroxyterminated polyethers had the best performance characteristics of materials examined. The optimal solvent composition was a 60/40 blend of GAP-1/TEG and a continuous bench-top absorption/desorption unit was constructed and operated. Plant and process models were developed for this new system based on an existing coal-fired power plant and data from the laboratory experiments were used to calculate an overall COE for a coal-fired power plant fitted with this capture technology. A reduction in energy penalty, from 30% to 18%, versus an optimized 30% MEA capture system was calculated with a concomitant COE decrease from 73% to 41% for the new aminosilicone solvent system. 3 Executive SummaryThe novel concept of using a molecule possessing both physi-sorbing and chemi-sorbing properties for post-combustion CO2 capture was explored. A variety of candidate materials with physi-sorbing backbones and chemically reactive peripheral groups were considered with the final selection primarily focusing on aminosilicones. A small effort was also devoted to derivatized plant oils.None of the plant oil derivatives were effective in absorbing CO2 in laboratory experiments. Model reactions suggest that both intra-molecular H-bonding between adjacent hydroxyl and amino groups and potential micelle formation suppressed reactions with CO2. This route was abandoned in favor of the aminosilicones.A variety of aminosilicones with differing architectures and type and placement of amine groups were examined both experimentally and computationally for physical properties as well as CO2 capture efficacy. Modeling indicated that the heat reaction of sterically hindered amines with CO2 was lower than for unhindered amines and that less basic amines also decreased the heat of reaction. This provided options to tune the heat of reaction for optimal plant performance. Physical property predictions were also made for viscosity, vapor pressure, density and CO2 solubility. Limited experimental data confirmed the accuracy of the density and solubility models as well as trend predictability in heats of reaction. However, viscosity predictions were not accurately modeled and vapor pressure data was unavailable.Synthetically, GEN 1 aminosilicone solvents with linear, branched, cyclic and star architectures were made that possessed mono and di-amine groups while other solvent candidates had varying degrees of steric hindrance. Oligomers as well as discrete small molecules were prepared and evaluated. These included solvents with covalently bound polyether units. CO2-capture experiments were performed using both high throughput screening (HTS) techniques as well as small-scale laboratory testing. Mass transfer issues prevented the HTS methodology from being as useful as anticipated. However, efficient mixing on the lab-scale provided reliable data. These experiment...

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“…By use of the linear regression method, the protonation constant K a can then be correlated as a function of temperature in an empirical equation form as follows: (17) Equation (17) could be useful to determine the protonation constant with its temperature dependency for future work. …”

Section: Resultsmentioning

confidence: 99%

“…A series of physical and chemical reaction equilibria for the CO 2 -amine-H 2 O system can, according to [17], be written as follows:…”

Section: Theorymentioning

confidence: 99%

Experimental determination of monoethanolamine protonation constant and its temperature dependency

et al. 2017

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Abstract. Carbon dioxide as one of the major contributors to the global warming problem is produced in large quantities by many important industries and its emission seems to rise from year to year. Aminebased absorption is one of the methods to capture CO 2 from its sources. As a reactive system, mass transfer and chemical reaction take place simultaneously. In a vapor-liquid equilibrium model for the CO 2 -amine-water system, some parameters such as mass transfer coefficients and chemical equilibrium constants need to be known. However, some parameters could be determined experimentally and the rests could be regressed from the model. The protonation constant (pK a ), as one of the model parameters, could then be measured experimentally. The purpose of this study is to measure the pK a of monoethanolamine (MEA) at a range of temperatures from 303 to 330K by a potentiometric titration method. The experimental data obtained were in a good agreement with the literature data. The pK a data from this work together with those from the literature were then correlated in an empirical correlation to be used for future research.

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Experimental and Modeling Study of the Solubility of Carbon Dioxide in Aqueous 30 Mass % 2-((2-Aminoethyl)amino)ethanol Solution

Cited by 156 publications

References 13 publications

Comparative study on differently concentrated aqueous solutions of MEA and TETA for CO2 capture from flue gases

Comparative study on differently concentrated aqueous solutions of MEA and TETA for CO2 capture from flue gases

Novel High Capacity Oligomers for Low Cost CO2 Capture

Experimental determination of monoethanolamine protonation constant and its temperature dependency

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