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Zárraga J, Zapata M, Ibarra D, Duarte D, Morillo Á, Llovera L, Gonzalez E, Ferrer V, Chirinos J. Solubility and Thermodynamic Parameters of H 2S/CH 4 in Ionic Liquids Determined by 1H NMR. ACS OMEGA 2024; 9:3588-3595. [PMID: 38284008 PMCID: PMC10809382 DOI: 10.1021/acsomega.3c07594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 01/30/2024]
Abstract
Natural gas remains an important global source of energy. Usually, sour gas from the well or refinery stream contains H2S among other contaminants that should be removed to fulfill permissible standards of use. Despite the use of different gas-liquid sour gas upgrading technologies, ionic liquids (ILs) have been recognized as promising materials to remove H2S from sour gas. However, data concerned with thermodynamic solution functions of H2S in ILs have scarcely been reported in the literature. In this work, solution 1H NMR spectroscopy was employed for quantifying H2S soluble in [BMIM][Cl] and for gaining a better understanding of the H2S-IL interaction. Experiments were carried out in a Young-Tap NMR tube containing a saturated solution of H2S/CH4/[BMIM][Cl] and recording spectra from 298 to 333 K. The thermodynamic solution functions, determined from the Van't Hoff equation, showed that solubility of the H2S in the [BMIM][Cl] is an exothermic gas-liquid physisorption process (ΔsolH° = -66.13 kJmol-1) with a negative entropy change (ΔsolS° = -168.19 JK-1 mol-1). 1H NMR spectra of the H2S/[BMIM][Cl] solution show a feature of strong solute-solvent interactions. However, solubility enthalpy is a fifth of the H-S bond energy value. Results from 1H NMR spectroscopy also agree with those from the bench dynamic experiments.
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Affiliation(s)
- Jeannette Zárraga
- Grupo
de Energía y Procesos Sustentables, Instituto de Ciencias Aplicadas,
Facultad de Ingeniería, Universidad
Autónoma de Chile, Santiago 8200000, Chile
| | - Mariana Zapata
- Laboratorio
de Polímeros, Departamento de Química, Facultad Experimental
de Ciencias, Universidad del Zulia, Maracaibo 4001A, Venezuela
- Instituo
de Superficies y Catálisis, Facultad de Ingeniería, Universidad del Zulia, Maracaibo 4001A, Venezuela
| | - Darmenia Ibarra
- Laboratorio
de Polímeros, Departamento de Química, Facultad Experimental
de Ciencias, Universidad del Zulia, Maracaibo 4001A, Venezuela
| | - Darlin Duarte
- Laboratorio
de Polímeros, Departamento de Química, Facultad Experimental
de Ciencias, Universidad del Zulia, Maracaibo 4001A, Venezuela
| | - Ángel Morillo
- Laboratorio
de Polímeros, Departamento de Química, Facultad Experimental
de Ciencias, Universidad del Zulia, Maracaibo 4001A, Venezuela
| | - Ligia Llovera
- Instituto
Venezolano de Investigaciones Científicas, Distrito Capital, Caracas 1020, Venezuela
| | - Eduardo Gonzalez
- Facultad
de Ciencias de la Salud, Universidad Católica
de Santa Fe, S3000Santa Fe de la Vera Cruz, Santa Fe, Argentina
| | - Victor Ferrer
- Unidad de
Desarrollo Tecnológico, Universidad
de Concepción, Coronel 4191996, Chile
- Centro
Nacional de Excelencia para la Industria de la Madera (CENAMAD), Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Juan Chirinos
- Grupo
de Energía y Procesos Sustentables, Instituto de Ciencias Aplicadas,
Facultad de Ingeniería, Universidad
Autónoma de Chile, Santiago 8200000, Chile
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Malik A, Kashyap HK. Solvation Shell Anatomy of H 2S and CO Dissolved in Reline and Ethaline Deep Eutectic Solvents. J Phys Chem B 2023; 127:10392-10403. [PMID: 37983272 DOI: 10.1021/acs.jpcb.3c03411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Rising atmospheric concentrations of anthropogenic hydrogen sulfide (H2S) and carbon monoxide (CO) as a result of industrialization have encouraged researchers to explore innovative technologies for capturing these gases. Deep eutectic solvents (DESs) are an alternative media for mitigating H2S and CO emissions. Herein, we have employed ab initio molecular dynamics simulations to investigate the structures of the nearest-neighbor solvation shells surrounding H2S and CO when they are dissolved in reline and ethaline DESs. We aim to delineate the structural arrangement responsible for favorable H2S and CO capture by analyzing the key interactions between H2S and CO solutes with various components of the DESs. We observe that in the reline-H2S system, chloride and carbonyl oxygen of urea are found to have the closest distance interaction with hydrogen atoms of the H2S solute. The sulfur atom of H2S is found to be predominantly solvated by hydrogen and oxygen atoms of urea molecules and the hydroxyl hydrogen of choline cations. The chloride ions and ethylene glycol molecules predominantly govern the solvation of H2S in the ethaline-H2S system. In both the DESs, H2S is solvated by the hydroxyl group of the choline cations rather than by their ammonium group. In the reline-CO system, all the atoms of urea along with chloride dominate the immediate solvation shell around CO. In the ethaline-CO system, hydroxyl oxygen and hydrogen atoms of ethylene glycol are found in the nearest solvation structure around CO. Both the DESs exhibit a stronger solvent-solute charge-transfer tendency toward the H2S solute compared to CO.
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Affiliation(s)
- Akshay Malik
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Hemant K Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Mechanism study on H2S capture of ionic liquids based on triethylenetetramine blended with ethylene glycol. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Absorption of SO2 by deep eutectic solvents composed of EmimCl and dihydric alcohols: Thermodynamic and absorption mechanism studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hydrogen Sulfide Capture and Removal Technologies: A Comprehensive Review of Recent Developments and Emerging Trends. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121448] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Li F, Laaksonen A, Zhang X, Ji X. Rotten Eggs Revaluated: Ionic Liquids and Deep Eutectic Solvents for Removal and Utilization of Hydrogen Sulfide. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Fangfang Li
- Energy Engineering, Division of Energy Science, Luleå University of Technology, 97187 Luleå, Sweden
| | - Aatto Laaksonen
- Energy Engineering, Division of Energy Science, Luleå University of Technology, 97187 Luleå, Sweden
- Division of Physical Chemistry, Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm 10691, Sweden
- Center of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni”Institute of Macromolecular Chemistry, Iasi 700469, Romania
- State Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiangping Zhang
- CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoyan Ji
- Energy Engineering, Division of Energy Science, Luleå University of Technology, 97187 Luleå, Sweden
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Task-specific deep eutectic solvents for the highly efficient and selective separation of H2S. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119357] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Highly efficient and reversible H2S capture by mercapto carboxylic anion functionalized ionic liquids. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Acid gas removal from gaseous streams such as flue gas, natural gas and biogas is mainly performed by chemical absorption with amines, but the process is highly energy intensive and can generate emissions of harmful compounds to the atmosphere. Considering the emerging interest in carbon capture, mainly associated with increasing environmental concerns, there is much current effort to develop innovative solvents able to lower the energy and environmental impact of the acid gas removal processes. To be competitive, the new blends must show a CO2 uptake capacity comparable to the one of the traditional MEA benchmark solution. In this work, a review of the state of the art of attractive solvents alternative to the traditional MEA amine blend for acid gas removal is presented. These novel solvents are classified into three main classes: biphasic blends—involving the formation of two liquid phases, water-lean solvents and green solvents. For each solvent, the peculiar features, the level of technological development and the main expected pros and cons are discussed. At the end, a summary on the most promising perspectives and on the major limitations is provided.
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Abstract
The solubility of hydrogen sulfide in different mole ratios of ferric chloride and 1-butyl-3-methylimidazolium chloride ionic liquid (rFeCl3/[bmim]Cl, r = 0.6, 0.8, 1.0, 1.2, 1.4) at temperatures of 303.15 to 348.15 K and pressures of 100 to 1000 kPa was determined. The total solubility increased with the increase of pressure and the decrease of temperature. The solubility data were fitted using the reaction equilibrium thermodynamic model (RETM). The mean relative error between the predicted value and the measured value was less than 4%. Henry’s coefficient and the equilibrium constant of chemical reaction at each temperature were calculated. Henry’s coefficient first decreased and then increased with the increase of mole ratio, and increased with the increase of temperature. The equilibrium constant of the chemical reaction followed the same law as Henry’s coefficient. The chemical solubility was related to both Henry’s coefficient and the chemical equilibrium constant. H2S had the highest chemical solubility in FeCl3/[bmim]Cl at a mole ratio of 0.6 and a temperature of 333.15 K. The chemical solubility increased with the increase of pressure.
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Tian X, Wang L, Zhang P, Fu D, Wang Z. A high efficient absorbent for the separation of H 2S from low partial pressure coke oven gas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5822-5832. [PMID: 32975752 DOI: 10.1007/s11356-020-10968-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
To high efficiently remove H2S from low partial pressure coke oven gas (COG), a novel activator (tetramethylammonium arginine, [N1111][Arg]) was used to blend with N-methyldiethanolamine (MDEA) for the absorption of H2S. High concentrated [N1111][Arg]-MDEA aqueous solution was used as absorbent. Thermodynamic properties including absorption amount and H2S loading values were measured, then the kinetic apparent absorption rate was calculated based on the change of absorption amount with time. The removal efficiency of H2S in simulated COG was verified in tray towers. Compared with monoethanolamine (MEA)-MDEA and tetramethylammonium glycinate ([N1111][Gly])-MDEA aqueous solutions, [N1111][Arg]-MDEA aqueous solution takes advantages of higher absorption capacity, absorption rate and removal efficiency. Our results showed that the proposed absorbent has good industrial application prospect in coke oven gas desulfurization, because it achieved 100% removal of H2S in the tray tower containing only 4 sieve plates under high concentrated condition (water content < 45%), which may significantly decrease the energy consumption.
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Affiliation(s)
- XiangFeng Tian
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
| | - LeMeng Wang
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
| | - Pan Zhang
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China.
| | - Dong Fu
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
| | - ZhouYao Wang
- Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China
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Matsuoka A, Kamio E, Matsuyama H. Effect of ligand structures on oxygen absorbability and viscosity of metal-containing ionic liquids. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Low viscosity lactam-based ionic liquids with carboxylate anions: Synthesis, characterization, thermophysical properties and mutual miscibility of ionic liquid with alcohol, water, and hydrocarbons. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113586] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wang B, Cheng J, Wang D, Li X, Meng Q, Zhang Z, An J, Liu X, Li M. Study on the Desulfurization and Regeneration Performance of Functional Deep Eutectic Solvents. ACS OMEGA 2020; 5:15353-15361. [PMID: 32637809 PMCID: PMC7331076 DOI: 10.1021/acsomega.0c01467] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/08/2020] [Indexed: 05/08/2023]
Abstract
Four deep eutectic solvents (DESs) were synthesized, and 5-30% polyethylenimine (PEI) was added to make functional DESs (FDESs) for dynamic absorption experiments of hydrogen sulfide. The synthesized FDESs were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and nuclear magnetic resonance. The results demonstrated the successful synthesis of FDESs. The interaction between H2S and the FDESs was discussed at a molecular level via the quantum chemical calculations. It was noticed that FDESs prefer chemisorption on H2S. In this work, the 25% PEI/FDES@EG showed the highest desulfurization performance. The effects of H2S concentration and temperature on the desulfurization performance were investigated. It was found that a relatively low temperature (30 °C) was favorable for the absorption of H2S. The 25% PEI/FDES@EG could remove H2S efficiently over a low H2S concentration. Moisture played an important role in the FDES desulfurization system. The absorption/desorption cycle experiment indicated that the FDESs retain their good regeneration performance for at least five times.
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Affiliation(s)
- Baohua Wang
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - Jian Cheng
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - DouDou Wang
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - Xiangyue Li
- Binzhou
Test Center for Marine and Fishery Product Quality, Binzhou 256600, P. R. China
| | - Qingmei Meng
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - Zijian Zhang
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - Jiutao An
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - Xinpeng Liu
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
| | - Menghong Li
- College
of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, P.
R. China
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