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Jinyue Yan - One of the best experts on this subject based on the ideXlab platform.
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co2 capture with the absorbent of a mixed ionic liquid and Amine Solution considering the effects of so2 and o2
Applied Energy, 2017Co-Authors: Jie Yang, Jinyue YanAbstract:Room-temperature ionic liquids (ILs) have recently been proposed as a potential candidate for CO2 capture. In this study, experiments were conducted in an absorption-desorption loop system to inves ...
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Impacts of thermo-physical properties of gas and liquid phases on design of absorber for CO2 capture using monoethanolAmine
International Journal of Greenhouse Gas Control, 2016Co-Authors: Worrada Nookuea, Yuting Tan, Eva Thorin, Jinyue YanAbstract:Abstract Absorption of CO 2 with aqueous Amines in post-combustion capture is characterized as a heat and mass transfer processes with chemical reaction, which is sensitively affected by the thermo-physical properties of fluids. In order to optimize the design of the absorber of CO 2 capture process, in this paper, the impacts of thermo-physical properties on the column design were investigated. Furthermore, the property impacts on the capital cost of the absorber unit were also identified and analyzed. Results show that the gas phase density has the most significant effect on the column diameter. Underestimation of the gas phase density of 10% may result in an increase of about 6% of the column diameter. For the packing height, the liquid phase density has the most significant effect. 10% underestimation of the liquid phase density may result in an increase of 8% of the packing height. Moreover, the effect from the liquid phase viscosity is also significant. For the annual capital cost, the liquid phase density also shows the most significant effect. Underestimation of the liquid phase density of 10% leads to the cost overestimation of $1.4 million for the absorption column for a 400 MW coal-fired power plant. Therefore, the development of the flue gas density model and liquid phase density and viscosity models of the aqueous Amine Solution with CO 2 loading should be prioritized.
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CO2 capture using Amine Solution mixed with ionic liquid
Industrial & Engineering Chemistry Research, 2014Co-Authors: Jie Yang, Jinyue YanAbstract:It is a focus to reduce the energy consumption and operating cost of CO2 capture from low-pressure flue gas streams of power plants using an aqueous Amine-based absorbent. In this study, CO2 capture experiments were conducted in an absorption–desorption loop system using Amine-based absorbents. The gas mixture containing CO2, O2, SO2, and N2 in the composition range of flue gas from coal-fired power plant after flue gas desulfurization was selected as the feed gas. For an aqueous Amine Solution, the largest contribution to monoethanolAmine (MEA) loss was made by evaporation during desorption, followed by the formation of sulfate and heat-stable salts. To reduce MEA loss and meanwhile decrease the energy consumption during CO2 desorption, an aqueous Amine Solution mixed with ionic liquid (30 wt % MEA + 40 wt % [bmim][BF4] + 30 wt % H2O) was proposed. The energy consumption of the mixed ionic liquid Solution for absorbent regeneration was 37.2% lower than that of aqueous MEA Solution. The MEA loss per ton o...
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CO2 Capture Using Absorbents of Mixed Ionic and Amine Solutions
Energy Procedia, 2014Co-Authors: Jie Yang, Jinyue YanAbstract:Studies have been conducted to find new absorbents for post-combustion CO2 capture. To overcome the ILs' limits and meanwhile take their advantages, the mixed Amine + IL + H2O Solutions as CO2 capture absorbent were investigated in a CO2 absorption/desorption loop setup. It was found that with an increase in IL concentration, the viscosity of the mixed Solution rose while the energy required for absorbent regeneration decreased. In addition, no IL loss was detected and the Amine loss per ton of captured CO2 was considerably lower than that of aqueous Amine Solution. The viscosity of the best candidate of 30 wt% MEA + 40 wt% [bmim][BF4] + 30 wt% H2O is close to the value of aqueous Amine Solution, indicating that the ionic liquid disadvantage of high viscosity can be overcome for absorbent delivery of CO2 capture.
Paitoon Tontiwachwuthikul - One of the best experts on this subject based on the ideXlab platform.
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Catalytic Performance and Mechanism of Meso–Microporous Material β-SBA-15-Supported FeZr Catalysts for CO2 Desorption in CO2-Loaded Aqueous Amine Solution
Industrial & Engineering Chemistry Research, 2021Co-Authors: Huang Yufei, Paitoon Tontiwachwuthikul, Xiaowen Zhang, Xiao Luo, Hongxia Gao, Zain Ali Saleh Bairq, Zhiwu LiangAbstract:The huge energy consumption of rich Amine Solution regeneration severely restricts the large-scale application and promotion of the CO2 capture process by the Amine method. In order to reduce the o...
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CO2 capture from lime kiln using AMP-DA2MP Amine solvent blend: A pilot plant study
Journal of environmental chemical engineering, 2018Co-Authors: Chikezie Nwaoha, Paitoon Tontiwachwuthikul, Abdelbaki BenamorAbstract:Abstract This experimental study covered pilot plant analysis of novel AMP and 1,5–diamino–2–methylpentane (DA2MP) Amine solvent blend for CO2 capture from a lime kiln. The gas flow rate (F(GAS)), Amine Solution flow rate (F(Amine)), CO2 concentration and reboiler temperature (T(REB)) were kept at 14 SLPM, 50 mL/min, 30 vol.% CO2 (N2 balance) and 120 °C respectively. The AMP concentration was kept at 2 kmol/m3 while DA2MP was varied from 1.5 kmol/m3 to 2 kmol/m3. The MEA and AMP-DA2MP comparative analysis was based on rich Amine loading (αrich, mol CO2/mol Amine), lean Amine loading (αlean, mol CO2/mol Amine), cyclic loading (CL, mol CO2/mol Amine), cyclic capacity (CC, mol CO2/L–Amine soln.), CO2 absorption rate (rabs, g–CO2/hr), CO2 absorption efficiency (%), regeneration energy (Qreg, GJ/tonne CO2), absorber overall average volumetric mass transfer coefficient (KGav(ave), kmol/kPa.hr. m3), desorber mass transfer coefficient (KLav, hr–1), initial Amine Solution utilized (Aminesoln._utilized, g-Amine soln./g-CO2) and initial Amine Solution cost (US$/g-CO2). The influence of sensible energy (Qsen, GJ/tonne CO2), vaporization energy (Qvap, GJ/tonne CO2), and desorption heat (ΔHdes, GJ/tonne CO2) towards regeneration energy (Qreg) was also exAmined. Results showed that the AMP-DA2MP blend possesses higher CO2 absorption efficiency (up to 36.17%), higher KGav(ave) (up to 65.85%), higher KLav (up to 28.29%) and lower Qreg (up to 32.54%) compared to the single solvent MEA. Also, MEA possessed higher initial Amine Solution utilized (28.86%) and lower initial Amine Solution cost (28.5%) compared to the AMP-DA2MP blend. This is an initial revelation that AMP-DA2MP can provide cost-effective CO2 capture from a lime kiln.
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Reducing energy consumption of CO2 desorption in CO2-loaded aqueous Amine Solution using Al2O3/HZSM-5 bifunctional catalysts
Applied Energy, 2018Co-Authors: Xiaowen Zhang, Mohammed J. Al-marri, Raphael Idem, Zhiwu Liang, Paitoon Tontiwachwuthikul, Abdelbaki BenamorAbstract:The aim of this work is to find a potential way for great decrease in CO2 capture energy requirement. Here, for the first time, a series of bifunctional Al2O3/HZSM-5 catalysts (Al-ZSM) were prepared by the combined precipitation ultrasound method and used for the CO2 desorption process. All the investigated catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), N2 adsorption–desorption, ammonia and CO2 temperature programmed desorption (NH3/CO2-TPD) and pyridine-adsorption infrared spectroscopy (Py-IR). The regeneration behaviors of a 5 M monoethanolAmine (MEA) solvent with four Al-ZSM catalysts were studied at an initial CO2 loading of 0.5 mol CO2/mol Amine and the temperature of 96 °C. The results reveal that all the catalysts improve the CO2 desorption performance, the Al-ZSM catalysts show higher catalytic performance than the single catalysts Al2O3 and HZSM-5, and the Al-ZSM can reduce the heat duty by 23.3–34.2% as compared with the catalyst-free test. The use of Al-ZSM in the MEA regeneration process improves the desorption performance by 2–3 times in comparison with the blank run. A possible dual sites mechanism of CO2 desorption with Al-ZSM is suggested. The excellent performance of Al-ZSM can be attributed to their enhanced Brϕnsted acid sites (BAS), mesopore surface area (MSA) and basic sites, which resulted from the good synergistic reaction between the Al2O3 and HZSM-5, and the base treatment for HZSM-5. Besides, the stability test of the Al-ZSM was conducted. Based on the results, the Al-ZSM demonstrate a superior catalytic performance for the rich Amine regeneration process, and present an excellent cyclic stability, explicitly have the potential to be a promising industrial catalyst for CO2 capture. Furthermore, the dual sites catalytic CO2 desorption over bifunctional catalysts will open a new path to design better catalysts for the rich Amine Solution regeneration process to increase the desorption performance, reduce the regeneration energy consumption, and thus further decreasing the operation costs of CO2 capture.
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reducing energy consumption of co2 desorption in co2 loaded aqueous Amine Solution using al2o3 hzsm 5 bifunctional catalysts
Applied Energy, 2018Co-Authors: Xiaowen Zhang, Raphael Idem, Zhiwu Liang, Paitoon Tontiwachwuthikul, Helei LiuAbstract:Abstract The aim of this work is to find a potential way for great decrease in CO2 capture energy requirement. Here, for the first time, a series of bifunctional Al2O3/HZSM-5 catalysts (Al-ZSM) were prepared by the combined precipitation ultrasound method and used for the CO2 desorption process. All the investigated catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), N2 adsorption–desorption, ammonia and CO2 temperature programmed desorption (NH3/CO2-TPD) and pyridine-adsorption infrared spectroscopy (Py-IR). The regeneration behaviors of a 5 M monoethanolAmine (MEA) solvent with four Al-ZSM catalysts were studied at an initial CO2 loading of 0.5 mol CO2/mol Amine and the temperature of 96 °C. The results reveal that all the catalysts improve the CO2 desorption performance, the Al-ZSM catalysts show higher catalytic performance than the single catalysts Al2O3 and HZSM-5, and the Al-ZSM can reduce the heat duty by 23.3–34.2% as compared with the catalyst-free test. The use of Al-ZSM in the MEA regeneration process improves the desorption performance by 2–3 times in comparison with the blank run. A possible dual sites mechanism of CO2 desorption with Al-ZSM is suggested. The excellent performance of Al-ZSM can be attributed to their enhanced Brϕnsted acid sites (BAS), mesopore surface area (MSA) and basic sites, which resulted from the good synergistic reaction between the Al2O3 and HZSM-5, and the base treatment for HZSM-5. Besides, the stability test of the Al-ZSM was conducted. Based on the results, the Al-ZSM demonstrate a superior catalytic performance for the rich Amine regeneration process, and present an excellent cyclic stability, explicitly have the potential to be a promising industrial catalyst for CO2 capture. Furthermore, the dual sites catalytic CO2 desorption over bifunctional catalysts will open a new path to design better catalysts for the rich Amine Solution regeneration process to increase the desorption performance, reduce the regeneration energy consumption, and thus further decreasing the operation costs of CO2 capture.
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Screening tests of aqueous alkanolAmine Solutions based on primary, secondary, and tertiary structure for blended aqueous Amine Solution selection in post combustion CO2 capture
Chemical Engineering Science, 2017Co-Authors: Pailin Muchan, Raphael Idem, Chintana Saiwan, Jessica Narku-tetteh, Teeradet Supap, Paitoon TontiwachwuthikulAbstract:Abstract In this work, hindered primary, secondary and tertiary aqueous alkanolAmine Solutions with different numbers of hydroxyl groups were investigated for their initial rates of absorption and desorption which show how fast the Amine Solution will reach equilibrium and will be regenerated, respectively, and also investigated pK a , equilibrium solubility of CO 2 , heat duty (Q reg ) for solvent regeneration, and heat of CO 2 absorption (ΔH abs ). These experimental data were used as a screening tool to enable the selection of the best Amine components for designing an optimal blended aqueous Amine Solution system. The absorption experiments were performed at 313 K and atmospheric pressure using 15% CO 2 (in N 2 balance) as feed gas whereas desorption experiments were performed at 363 K and atmospheric pressure. AlkanolAmines with a larger number of hydroxyl groups exhibited lower performance in all the CO 2 capture activities because of the negative electron withdrawing effect of the hydroxyl group. Consequently, based on the results of individual primary, secondary, and tertiary aqueous alkanolAmine Solutions, the ones with only one hydroxyl group (2-amino-2-methyl-1-propanol (AMP), 2-(ethylamino) ethanol (EAE), and 2-(dimethylaminoethanol) (DMAE)) were selected for formulation into aqueous Amine blends. Two binary aqueous Amine blends of AMP/DMAE and EAE/DMAE and one ternary aqueous Amine blend of AMP/EAE/DMAE at various molar ratios were tested. All solvent combinations showed better performance than 5 M MEA, especially in the initial desorption rate and energy efficiency. Of these aqueous Amine blends, the 2.5 M AMP/2.5 M DMAE exhibited the best performance with an equilibrium CO 2 solubility of 0.56 mol CO 2 /mol Amine, initial absorption rate of 0.26 × 10 −2 mol CO 2 /min, initial desorption rate of 2.62 × 10 −2 mol CO 2 /min, and heat duty of 53.81 kJ/mol.
Josef Rieder - One of the best experts on this subject based on the ideXlab platform.
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Determination of anions in Amine Solutions for sour gas treatment
Journal of Chromatography A, 1995Co-Authors: Rainer Kadnar, Josef RiederAbstract:Abstract In sour gas treatment, various Amine Solutions are used to remove the acidic components H 2 S and CO 2 . These components are absorbed by the Amine Solution and stripped during Amine regeneration. Other anions (contaminants) tie up the Amine by forming heat-stable salts (HSS) which cannot be regenerated. HSS also can be formed from Amine degradation by-products, i.e., organic acids. Hence the acid gas-carrying capacity of the Amine will be reduced. HSS also can promote corrosion and cause foaming problems. Therefore, the determination of anions in Amine Solutions is very important. Using the analytical columns IonPac AS9-SC and AS10, it is possible to determine all anions of interest by ion chromatography.
Raphael Idem - One of the best experts on this subject based on the ideXlab platform.
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Reducing energy consumption of CO2 desorption in CO2-loaded aqueous Amine Solution using Al2O3/HZSM-5 bifunctional catalysts
Applied Energy, 2018Co-Authors: Xiaowen Zhang, Mohammed J. Al-marri, Raphael Idem, Zhiwu Liang, Paitoon Tontiwachwuthikul, Abdelbaki BenamorAbstract:The aim of this work is to find a potential way for great decrease in CO2 capture energy requirement. Here, for the first time, a series of bifunctional Al2O3/HZSM-5 catalysts (Al-ZSM) were prepared by the combined precipitation ultrasound method and used for the CO2 desorption process. All the investigated catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), N2 adsorption–desorption, ammonia and CO2 temperature programmed desorption (NH3/CO2-TPD) and pyridine-adsorption infrared spectroscopy (Py-IR). The regeneration behaviors of a 5 M monoethanolAmine (MEA) solvent with four Al-ZSM catalysts were studied at an initial CO2 loading of 0.5 mol CO2/mol Amine and the temperature of 96 °C. The results reveal that all the catalysts improve the CO2 desorption performance, the Al-ZSM catalysts show higher catalytic performance than the single catalysts Al2O3 and HZSM-5, and the Al-ZSM can reduce the heat duty by 23.3–34.2% as compared with the catalyst-free test. The use of Al-ZSM in the MEA regeneration process improves the desorption performance by 2–3 times in comparison with the blank run. A possible dual sites mechanism of CO2 desorption with Al-ZSM is suggested. The excellent performance of Al-ZSM can be attributed to their enhanced Brϕnsted acid sites (BAS), mesopore surface area (MSA) and basic sites, which resulted from the good synergistic reaction between the Al2O3 and HZSM-5, and the base treatment for HZSM-5. Besides, the stability test of the Al-ZSM was conducted. Based on the results, the Al-ZSM demonstrate a superior catalytic performance for the rich Amine regeneration process, and present an excellent cyclic stability, explicitly have the potential to be a promising industrial catalyst for CO2 capture. Furthermore, the dual sites catalytic CO2 desorption over bifunctional catalysts will open a new path to design better catalysts for the rich Amine Solution regeneration process to increase the desorption performance, reduce the regeneration energy consumption, and thus further decreasing the operation costs of CO2 capture.
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reducing energy consumption of co2 desorption in co2 loaded aqueous Amine Solution using al2o3 hzsm 5 bifunctional catalysts
Applied Energy, 2018Co-Authors: Xiaowen Zhang, Raphael Idem, Zhiwu Liang, Paitoon Tontiwachwuthikul, Helei LiuAbstract:Abstract The aim of this work is to find a potential way for great decrease in CO2 capture energy requirement. Here, for the first time, a series of bifunctional Al2O3/HZSM-5 catalysts (Al-ZSM) were prepared by the combined precipitation ultrasound method and used for the CO2 desorption process. All the investigated catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), N2 adsorption–desorption, ammonia and CO2 temperature programmed desorption (NH3/CO2-TPD) and pyridine-adsorption infrared spectroscopy (Py-IR). The regeneration behaviors of a 5 M monoethanolAmine (MEA) solvent with four Al-ZSM catalysts were studied at an initial CO2 loading of 0.5 mol CO2/mol Amine and the temperature of 96 °C. The results reveal that all the catalysts improve the CO2 desorption performance, the Al-ZSM catalysts show higher catalytic performance than the single catalysts Al2O3 and HZSM-5, and the Al-ZSM can reduce the heat duty by 23.3–34.2% as compared with the catalyst-free test. The use of Al-ZSM in the MEA regeneration process improves the desorption performance by 2–3 times in comparison with the blank run. A possible dual sites mechanism of CO2 desorption with Al-ZSM is suggested. The excellent performance of Al-ZSM can be attributed to their enhanced Brϕnsted acid sites (BAS), mesopore surface area (MSA) and basic sites, which resulted from the good synergistic reaction between the Al2O3 and HZSM-5, and the base treatment for HZSM-5. Besides, the stability test of the Al-ZSM was conducted. Based on the results, the Al-ZSM demonstrate a superior catalytic performance for the rich Amine regeneration process, and present an excellent cyclic stability, explicitly have the potential to be a promising industrial catalyst for CO2 capture. Furthermore, the dual sites catalytic CO2 desorption over bifunctional catalysts will open a new path to design better catalysts for the rich Amine Solution regeneration process to increase the desorption performance, reduce the regeneration energy consumption, and thus further decreasing the operation costs of CO2 capture.
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Catalyst performance and experimental validation of a rigorous desorber model for low temperature catalyst-aided desorption of CO2 in single and blended Amine Solutions
Journal of environmental chemical engineering, 2017Co-Authors: Benjamin Decardi-nelson, Ananda Akachuku, Priscilla Anima Osei, Fatemeh Pouryousefi, Wayuta Srisang, Raphael IdemAbstract:Abstract In this study, experimental results of an integrated CO2 capture pilot plant utilizing blended MEA-MDEA Solution and two solid acid catalysts (γ-Al2O3 and HZSM-5) in the desorber are presented, and a model developed in-house was validated against the experimental data. The model showed good agreement with the pilot plant data with an absolute average deviation (AAD) of 7.7% for CO2 production rates and could predict well the temperature profiles in the column. The model which has been previously validated against experimental data utilizing MEA and the two solid acid catalysts, was used to predict the performance (in terms of their contribution to the overall reaction rates) of the solid acid catalysts in both solvents (single and blended Amine Solutions). The performance results showed that the catalysts contributed more to the process as the temperature and amount of catalyst increased with HZSM-5 yielding as high as 95% increase to the overall rate of reaction in the single Amine system. The results of the performance of the catalysts in the blended solvent were quite low compared to those of the single Amine Solution. It was observed that the predicted gas phase CO2 concentration profiles in the desorber, which was not readily available experimentally, was quite high and undesired. Thus, further steps should be taken to address this problem.
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Screening tests of aqueous alkanolAmine Solutions based on primary, secondary, and tertiary structure for blended aqueous Amine Solution selection in post combustion CO2 capture
Chemical Engineering Science, 2017Co-Authors: Pailin Muchan, Raphael Idem, Chintana Saiwan, Jessica Narku-tetteh, Teeradet Supap, Paitoon TontiwachwuthikulAbstract:Abstract In this work, hindered primary, secondary and tertiary aqueous alkanolAmine Solutions with different numbers of hydroxyl groups were investigated for their initial rates of absorption and desorption which show how fast the Amine Solution will reach equilibrium and will be regenerated, respectively, and also investigated pK a , equilibrium solubility of CO 2 , heat duty (Q reg ) for solvent regeneration, and heat of CO 2 absorption (ΔH abs ). These experimental data were used as a screening tool to enable the selection of the best Amine components for designing an optimal blended aqueous Amine Solution system. The absorption experiments were performed at 313 K and atmospheric pressure using 15% CO 2 (in N 2 balance) as feed gas whereas desorption experiments were performed at 363 K and atmospheric pressure. AlkanolAmines with a larger number of hydroxyl groups exhibited lower performance in all the CO 2 capture activities because of the negative electron withdrawing effect of the hydroxyl group. Consequently, based on the results of individual primary, secondary, and tertiary aqueous alkanolAmine Solutions, the ones with only one hydroxyl group (2-amino-2-methyl-1-propanol (AMP), 2-(ethylamino) ethanol (EAE), and 2-(dimethylaminoethanol) (DMAE)) were selected for formulation into aqueous Amine blends. Two binary aqueous Amine blends of AMP/DMAE and EAE/DMAE and one ternary aqueous Amine blend of AMP/EAE/DMAE at various molar ratios were tested. All solvent combinations showed better performance than 5 M MEA, especially in the initial desorption rate and energy efficiency. Of these aqueous Amine blends, the 2.5 M AMP/2.5 M DMAE exhibited the best performance with an equilibrium CO 2 solubility of 0.56 mol CO 2 /mol Amine, initial absorption rate of 0.26 × 10 −2 mol CO 2 /min, initial desorption rate of 2.62 × 10 −2 mol CO 2 /min, and heat duty of 53.81 kJ/mol.
Hidetaka Yamada - One of the best experts on this subject based on the ideXlab platform.
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Modeling of CO2 Solubility in Tertiary Amine Solvents Using pKa
Journal of Chemical & Engineering Data, 2016Co-Authors: Hiroshi Machida, Shin Yamamoto, Hidetaka YamadaAbstract:Tertiary Amines are widely used to capture CO2 from the gases of high-pressure processes because these compounds have high CO2 solubilities at high pressures of 0.5–1 MPa and low CO2 absorption heats compared to primary and secondary Amines. CO2 solubility model for tertiary Amine solvents was developed using pKa. This study used selected aqueous Solutions of tertiary alkanolAmines, tertiary cyclic Amines, and tertiary diAmines as solvents for modeling. Chemical equilibrium constants were correlated with a linear function of pKa. The generalized parameters provide a method to predict CO2 solubility in a tertiary Amine Solution from the pKa of the Amine.
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Prediction of the Basicity of Aqueous Amine Solutions and the Species Distribution in the Amine−H2O−CO2 System Using the COSMO-RS Method
Industrial & Engineering Chemistry Research, 2010Co-Authors: Hidetaka Yamada, Shinkichi Shimizu, Hiromichi Okabe, Yoichi Matsuzaki, Firoz Alam Chowdhury, Yuichi FujiokaAbstract:A conductor-like screening model for real solvents (COSMO-RS) was applied to the study of the Amine−H2O−CO2 system. pKa values for 25 Amines including a variety of alkanolAmines and some cyclic or aromatic Amines were calculated by the COSMO-RS method coupled with the density functional theory (DFT). The predictions of pKa values were compared using different DFT levels for geometry optimization and also with those based on another solvation model (SM5.4/A). The DFT-COSMO calculation at the BP/TZVP level has shown a relatively good correlation with experimental values for the 25 Amines (R2 ≅ 0.8) at a low computational cost. With this method, we have developed a calculation model to predict the equilibrium ratio between carbamate and bicarbonate anions in a CO2-loaded aqueous Amine Solution and have confirmed the validity of the prediction model by 13C NMR spectroscopy.