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Shiga M, Morishita T, Nishiyama N, Sorai M, Aichi M, Abe A. Atomic-Scale Insights into the Phase Behavior of Carbon Dioxide and Water from 313 to 573 K and 8 to 30 MPa. ACS OMEGA 2024; 9:20976-20987. [PMID: 38764624 PMCID: PMC11097351 DOI: 10.1021/acsomega.4c00133] [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: 01/04/2024] [Revised: 03/17/2024] [Accepted: 04/10/2024] [Indexed: 05/21/2024]
Abstract
We performed molecular dynamics (MD) simulations of CO2 + H2O systems by employing widely used force fields (EPM2, TraPPE, and PPL models for CO2; SPC/E and TIP4P/2005 models for H2O). The phase behavior observed in our MD simulations is consistent with the coexistence lines obtained from previous experiments and SAFT-based theoretical models for the equations of state. Our structural analysis reveals a pronounced correlation between phase transitions and the structural orderliness. Specifically, the coordination number of Ow (oxygen in H2O) around other Ow significantly correlates with phase changes. In contrast, coordination numbers pertaining to the CO2 molecules show less sensitivity to the thermodynamic state of the system. Furthermore, our data indicate that a predominant number of H2O molecules exist as monomers without forming hydrogen bonds, particularly in a CO2-rich mixture, signaling a breakdown in the hydrogen bond network's orderliness, as evidenced by a marked decrease in tetrahedrality. These insights are crucial for a deeper atomic-level understanding of phase behaviors, contributing to the well-grounded design of CO2 injection under high-pressure and high-temperature conditions, where an atomic-scale perspective of the phase behavior is still lacking.
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Affiliation(s)
- Masashige Shiga
- Geological
Survey of Japan, National Institute of Advanced
Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8567, Japan
| | - Tetsuya Morishita
- Research
Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
| | - Naoki Nishiyama
- Geological
Survey of Japan, National Institute of Advanced
Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8567, Japan
| | - Masao Sorai
- Geological
Survey of Japan, National Institute of Advanced
Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8567, Japan
| | - Masaatsu Aichi
- Department
of Environment Systems, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8563, Japan
| | - Ayaka Abe
- Japan
Organization for Metals and Energy Security (JOGMEC), Minato-ku, Tokyo 105-0001, Japan
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2
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Novak N, Liang X, Kontogeorgis GM. Prediction of water anomalous properties by introducing the two-state theory in SAFT. J Chem Phys 2024; 160:104505. [PMID: 38465683 DOI: 10.1063/5.0186752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/14/2024] [Indexed: 03/12/2024] Open
Abstract
Water is one of the most abundant substances on earth, but it is still not entirely understood. It shows unusual behavior, and its properties present characteristic extrema unlike any other fluid. This unusual behavior has been linked to the two-state theory of water, which proposes that water forms different clusters, one with a high density and one with a low density, which may even form two distinct phases at low temperatures. Models incorporating the two-state theory manage to capture the unusual extrema of water, unlike traditional equations of state, which fail. In this work, we have derived the framework to incorporate the two-state theory of water into the Statistical-Associating-Fluid-Theory (SAFT). More specifically, we have assumed that water is an ideal solution of high density water molecules and low density water molecules that are in chemical equilibrium. Using this assumption, we have generalized the association term SAFT to allow for the simultaneous existence of the two water types, which have the same physical parameters but different association properties. We have incorporated the newly derived association term in the context of the Perturbed Chain-SAFT (PC-SAFT). The new model is referred to as PC-SAFT-Two-State (PC-SAFT-TS). Using PC-SAFT-TS, we have succeeded in predicting the characteristic extrema of water, such as its density and speed of sound maximum, etc., without loss of accuracy compared to the original PC-SAFT. This new framework is readily extended to mixtures, and PC-SAFT-TS manages to capture the solubility minimum of hydrocarbons in water in a straightforward manner.
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Affiliation(s)
- Nefeli Novak
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Xiaodong Liang
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Georgios M Kontogeorgis
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
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3
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Novak N, Kontogeorgis GM, Castier M, Economou IG. Mixed Solvent Electrolyte Solutions: A Review and Calculations with the eSAFT-VR Mie Equation of State. Ind Eng Chem Res 2023; 62:13646-13665. [PMID: 37663168 PMCID: PMC10472441 DOI: 10.1021/acs.iecr.3c00717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/04/2023] [Accepted: 06/09/2023] [Indexed: 09/05/2023]
Abstract
In this work, mixed-solvent mean ionic activity coefficients (MIAC), vapor-liquid equilibrium (VLE), and liquid-liquid equilibrium (LLE) of electrolyte solutions have been addressed. An extended literature review of existing electrolyte activity coefficient models (eGE) and electrolyte equations of state (eEoS) for modeling mixed solvent electrolyte systems is first presented, focusing on the details of the models in terms of physical and electrolyte terms, relative static permittivity, and parameterization. The analysis of this literature reveals that the property predictions can be ranked, from the easiest to the most difficult, in the following order: VLE, MIAC, and LLE. We have then used our previously developed eSAFT-VR Mie model to predict MIAC, VLE, and LLE in mixed solvents without fitting any new adjustable parameters. The model was parameterized on MIAC of aqueous electrolyte solutions and successfully extended to nonaqueous, single solvent electrolyte solutions without any new adjustable parameters by using a salt-dependent expression for the relative static permittivity. Our approach yields excellent results for MIAC and VLE of mixed solvent electrolyte solutions, while being fully predictive. LLE is significantly more challenging, and an accurate model for the salt-free solution is crucial for accurate calculations. When the compositions of the two phases in the binary salt-free system are accurately captured, then the electrolyte extension of our model shows a lot of potential and is currently among the best eEoS for LLE prediction in the literature.
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Affiliation(s)
- Nefeli Novak
- National
Center for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, Molecular
Thermodynamics and Modelling of Materials Laboratory, GR-153 10 Aghia
Paraskevi Attikis, Greece
- Center
for Energy Resources Engineering, Department of Chemical and Biochemical
Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Georgios M. Kontogeorgis
- Center
for Energy Resources Engineering, Department of Chemical and Biochemical
Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Marcelo Castier
- Chemical
Engineering Program, Texas A&M University
at Qatar, Education City, PO Box 23874, Doha, Qatar
- Polytechnic
Faculty, National University of Asunción, 2111 San Lorenzo, Paraguay
| | - Ioannis G. Economou
- National
Center for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, Molecular
Thermodynamics and Modelling of Materials Laboratory, GR-153 10 Aghia
Paraskevi Attikis, Greece
- Chemical
Engineering Program, Texas A&M University
at Qatar, Education City, PO Box 23874, Doha, Qatar
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4
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Jervell VG, Wilhelmsen Ø. Revised Enskog theory for Mie fluids: Prediction of diffusion coefficients, thermal diffusion coefficients, viscosities, and thermal conductivities. J Chem Phys 2023; 158:2895227. [PMID: 37290070 DOI: 10.1063/5.0149865] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/11/2023] [Indexed: 06/10/2023] Open
Abstract
Since the 1920s, the Enskog solutions to the Boltzmann equation have provided a route to predicting the transport properties of dilute gas mixtures. At higher densities, predictions have been limited to gases of hard spheres. In this work, we present a revised Enskog theory for multicomponent mixtures of Mie fluids, where the Barker-Henderson perturbation theory is used to calculate the radial distribution function at contact. With parameters of the Mie-potentials regressed to equilibrium properties, the theory is fully predictive for transport properties. The presented framework offers a link between the Mie potential and transport properties at elevated densities, giving accurate predictions for real fluids. For mixtures of noble gases, diffusion coefficients from experiments are reproduced within ±4%. For hydrogen, the predicted self-diffusion coefficient is within 10% of experimental data up to 200 MPa and at temperatures above 171 K. Binary diffusion coefficients of the CO2/CH4 mixture from simulations are reproduced within 20% at pressures up to 14.7 MPa. Except for xenon in the vicinity of the critical point, the thermal conductivity of noble gases and their mixtures is reproduced within 10% of the experimental data. For other molecules than noble gases, the temperature dependence of the thermal conductivity is under-predicted, while the density dependence appears to be correctly predicted. Predictions of the viscosity are within ±10% of the experimental data for methane, nitrogen, and argon up to 300 bar, for temperatures ranging from 233 to 523 K. At pressures up to 500 bar and temperatures from 200 to 800 K, the predictions are within ±15% of the most accurate correlation for the viscosity of air. Comparing the theory to an extensive set of measurements of thermal diffusion ratios, we find that 49% of the model predictions are within ±20% of the reported measurements. The predicted thermal diffusion factor differs by less than 15% from the simulation results of Lennard-Jones mixtures, even at densities well exceeding the critical density.
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Affiliation(s)
- Vegard G Jervell
- Porelab, Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Øivind Wilhelmsen
- Porelab, Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
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5
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Paricaud P. Multipolar SAFT-VR Mie Equation of State: Predictions of Phase Equilibria in Refrigerant Systems with No Binary Interaction Parameter. J Phys Chem B 2023; 127:3052-3070. [PMID: 36977318 DOI: 10.1021/acs.jpcb.3c01058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
An extension of the SAFT-VR Mie equation of state is proposed to predict the properties of multipolar fluids. The new model, referred to as multipolar M-SAFT-VR Mie, incorporates the general multipolar term developed by Gubbins and co-workers, which accounts for dipole-dipole, quadrupole-quadrupole, and dipole-quadrupole interactions. A modification of the third order terms in the perturbation theory results in an accurate description of the simulation data for multipolar Lennard-Jones fluids. Both the M-SAFT-VR Mie and polar soft-SAFT models are extended to account for polarizability, and a good agreement is obtained with molecular simulation data. The M-SAFT-VR Mie model is applied to refrigerant systems, and it is found that including both dipole and quadrupole moments in molecular models leads to more accurate results than using only a dipole moment. The new model provides excellent predictions of the vapor-liquid equilibria of zeotropic and azeotropic refrigerant mixtures without the need for binary interaction parameters, making it a valuable tool for formulating low-GWP working fluids.
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Affiliation(s)
- Patrice Paricaud
- UCP, ENSTA Paris, Institut Polytechnique de Paris, 828 Boulevard des Maréchaux, 91120 Palaiseau, France
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6
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Smith SAM, Cripwell JT, Schwarz CE. Application of Renormalization Corrections to SAFT-VR Mie. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sonja A. M. Smith
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
| | - Jamie T. Cripwell
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
| | - Cara E. Schwarz
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
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7
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Schulze-Hulbe A, Shaahmadi F, Burger AJ, Cripwell JT. Extending the Structural (s)-SAFT-γ Mie Equation of State to Primary Alcohols. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander Schulze-Hulbe
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Fariborz Shaahmadi
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Andries J. Burger
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Jamie T. Cripwell
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
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8
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Lyra EP, Mercier Franco LF. Deriving force fields with a multiscale approach:from ab initio calculations to molecular-based equations of state. J Chem Phys 2022; 157:114107. [DOI: 10.1063/5.0109350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using theoretical and computational tools for predicting thermophysical properties of fluid systems and the soft matter has always been of interest to the physical, chemical, and engineering sciences. And certainly, the ultimate goal is to be able to compute these macroscopic properties from first principle calculations beginning with the very atomic constitution of matter. In this work, Mie potential parameters were obtained through dimer interaction energy curves derived from ab initio calculations to represent methane and methane-substituted molecules in a spherical 1-site coarse-grained model. Bottom-up-based Mie potential parameters of this work were compared to top-down-based ones from the statistical associating fluid theory (SAFT) models for the calculation of thermodynamic properties and critical point by molecular dynamics simulations and SAFT-VR Mie equation of state. Results demonstrated that bottom-up-based Mie potential parameters when averaging the Mie potential parameters of a representative population of conformers provide values close to the top-down-based ones from SAFT models and predict well properties of tetrahedral molecules. This shows the level of consistency embedded in the SAFT-VR Mie family of models and confers a status of a purely predictive equation of state for SAFT-VR Mie when a reasonable model is considered to represent a molecule of interest.
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9
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Walker PJ, Zhao T, Haslam AJ, Jackson G. Ab initio development of generalized Lennard-Jones (Mie) force fields for predictions of thermodynamic properties in advanced molecular-based SAFT equations of state. J Chem Phys 2022; 156:154106. [PMID: 35459299 DOI: 10.1063/5.0087125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A methodology for obtaining molecular parameters of a modified statistical associating fluid theory for variable-range interactions of Mie form (SAFT-VR Mie) equation of state (EoS) from ab initio calculations is proposed for non-associative species that can be modeled as single spherical segments. The methodology provides a strategy to map interatomic or intermolecular potentials obtained from ab initio quantum-chemistry calculations to the corresponding Mie potentials that can be used within the SAFT-VR Mie EoS. The inclusion of corrections for quantum and many-body effects allows for an excellent, fully predictive description of the vapor-liquid envelope and other bulk thermodynamic properties of noble gases; this description is of similar or superior quality to that obtained using SAFT-VR Mie with parameters regressed in the traditional way using experimental thermodynamic-property data. The methodology is extended to an anisotropic species, methane, where similar levels of accuracy are obtained. The efficacy of using less-accurate quantum-chemistry methods in this methodology is explored, showing that these methods do not provide satisfactory results, although we note that the description is nevertheless substantially better than those obtained using the conductor-like screening model for describing real solvents (COSMO-RS), the only other fully predictive ab initio method currently available. Overall, the reliance on thermophysical data is completely dispensed with, providing the first extensible, wholly predictive SAFT-type EoSs.
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Affiliation(s)
- Pierre J Walker
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Tianpu Zhao
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Andrew J Haslam
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - George Jackson
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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10
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Cywiak D, Gil-Villegas A, Patti A. Long-time relaxation dynamics in nematic and smectic liquid crystals of soft repulsive colloidal rods. Phys Rev E 2022; 105:014703. [PMID: 35193200 DOI: 10.1103/physreve.105.014703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 01/04/2022] [Indexed: 06/14/2023]
Abstract
Understanding the relaxation dynamics of colloidal suspensions is crucial to identifying the elements that influence the mobility of their constituents, assessing their macroscopic response across the relevant time and length scales, and thus disclosing the fundamentals underpinning their exploitation in formulation engineering. In this work, we specifically assess the impact of long-ranged ordering on the relaxation dynamics of suspensions of soft repulsive rodlike particles, which are able to self-organize into nematic and smectic liquid-crystalline phases. Rods are modeled as soft repulsive spherocylinders with a length-to-diameter ratio L^{★}=5, interacting via the truncated and shifted Kihara potential. By performing dynamic Monte Carlo simulations, we analyze the effect of translational and orientational order on the diffusion of the rods along the relevant directions imposed by the morphology of the background phases. To provide a clear picture of the resulting dynamics, we assess its dependence on temperature, which can dramatically determine the response time of the system relaxation and the self-diffusion coefficients of the rods. The computation of the van Hove correlation functions allows us to identify the existence of rods that diffuse significantly faster than the average and whose concentration can be accurately adjusted by a suitable choice of temperature.
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Affiliation(s)
- Daniela Cywiak
- División de Ciencias e Ingenierías, Universidad de Guanajuato, Campus León, Mexico
| | | | - Alessandro Patti
- Department of Chemical Engineering and Analytical Science, University of Manchester, Manchester M13 9PL, United Kingdom
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11
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Novak N, Kontogeorgis GM, Castier M, Economou IG. Modeling of Gas Solubility in Aqueous Electrolyte Solutions with the eSAFT-VR Mie Equation of State. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02923] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nefeli Novak
- National Center for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, Molecular Thermodynamics and Modelling of Materials Laboratory, Aghia Paraskevi Attikis GR−153 10, Greece
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs Lyngby 2800, Denmark
| | - Georgios M. Kontogeorgis
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs Lyngby 2800, Denmark
| | - Marcelo Castier
- Universidad Paraguayo Alemana, 1279 Lope de Vega, San Lorenzo 1279, Paraguay
- Chemical Engineering Program, Education City, Texas A&M University at Qatar, P.O. Box 23874, Doha 23874, Qatar
| | - Ioannis G. Economou
- National Center for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, Molecular Thermodynamics and Modelling of Materials Laboratory, Aghia Paraskevi Attikis GR−153 10, Greece
- Chemical Engineering Program, Education City, Texas A&M University at Qatar, P.O. Box 23874, Doha 23874, Qatar
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12
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Arathala P, Tangtartharakul CB, Sinha A. Atmospheric Ring-Closure and Dehydration Reactions of 1,4-Hydroxycarbonyls in the Gas Phase: The Impact of Catalysts. J Phys Chem A 2021; 125:5963-5975. [PMID: 34191509 DOI: 10.1021/acs.jpca.1c02331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1,4-Hydroxycarbonyls can potentially undergo sequential reactions involving cyclization followed by dehydration to form dihydrofurans. As dihydrofurans contain a double bond, they are highly reactive toward atmospheric oxidants such as OH, O3, and NO3. In the present study, we use ab initio calculations to examine the impact of various atmospheric catalysts on the energetics and kinetics of the gas-phase cyclization and dehydration reaction steps associated with 4-hydroxybutanal, a prototypical 1,4-hydroxycarbonyl molecule. The cyclization step transforms 4-hydroxybutanal into 2-hydroxytetrahydrofuran, which can subsequently undergo dehydration to form 2,3-dihydrofuran. As the barriers associated with the cyclization and dehydration steps for 4-hydroxybutanal are, respectively, 34.8 and 63.0 kcal/mol in the absence of a catalyst, both reaction steps are inaccessible under atmospheric conditions in the gas phase. However, the presence of a suitable catalyst can significantly reduce the reaction barriers, and we have examined the impact of a single molecule of H2O, HO2 radical, HC(O)OH, HNO3, and H2SO4 on these reactions. We find that H2SO4 reduces the reaction barriers the greatest, with the barrier for the cyclization step being reduced to -13.1 kcal/mol and that for the dehydration step going down to 9.2 kcal/mol, measured relative to their respective separated starting reactants. Interestingly, our kinetic study shows that HNO3 gives the fastest rate due to the combined effects of a larger atmospheric concentration and a reduced barrier. Thus, our study suggests that, with acid catalysis, the cyclization reaction step can readily occur for 1,4-hydroxycarbonyls in the gas phase. Because the dehydration step exhibits a significant barrier even with acid catalysis, the 2-hydroxytetrahydrofuran products, once formed, are likely lost through their reaction with OH radicals in the atmosphere. We have investigated the reaction pathways and the rate constant for this bimolecular reaction in the presence of excess molecular oxygen (3O2), as it would occur under tropospheric conditions, using computational chemistry over the 200-300 K temperature range. We find that the main products from these OH-initiated oxidation reactions are succinaldehyde + HO2 and 2,3-dihydro-2-furanol + HO2.
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Affiliation(s)
- Parandaman Arathala
- Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, California 92093, United States
| | - Chanin B Tangtartharakul
- Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, California 92093, United States
| | - Amitabha Sinha
- Department of Chemistry and Biochemistry, University of California-San Diego, La Jolla, California 92093, United States
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13
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Shaahmadi F, Hurter RM, Burger AJ, Cripwell JT. Improving the SAFT-γ Mie equation of state to account for functional group interactions in a structural (s-SAFT-γ Mie) framework: Linear and branched alkanes. J Chem Phys 2021; 154:244102. [PMID: 34241347 DOI: 10.1063/5.0048315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The group contribution SAFT-γ Mie EoS is based on the statistical associating fluid theory for fused heteronuclear molecules. While the chain term of the model has been modified to account for the new functional group-specific parameters, it does not impose a bonding order to these functional groups, only considering intergroup interactions in the monomer reference fluid. This leaves the model unable to account for the different physical properties of structural isomers and implicitly introducing modeling bias to species where the molecular structure mimics those used in the parameter regression. In this work, a simple but physically meaningful modification to the chain term in SAFT-γ Mie is proposed that accounts for the number of intergroup bonds, thereby encoding structural information in the model, without introducing an additional regressed parameter. The resulting structural SAFT-γ Mie (s-SAFT-γ Mie) requires reparameterization of the group parameters, which we present for linear and branched alkanes (CH3, CH2, CH, and C groups) here. Following an identical parameterization procedure to the original model, validation showed that the modification actually improves prediction accuracy for linear alkanes while addressing the original inability of the framework to distinguish between structural isomers. The good predictive performance seen in this work, for both pure component and mixture properties, lays a good foundation for expansion to other functional groups in future work.
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Affiliation(s)
- Fariborz Shaahmadi
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
| | - Ruan M Hurter
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
| | - Andries J Burger
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
| | - Jamie T Cripwell
- Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch 7600, South Africa
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14
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Lopes JT, Franco LF. A possible way to explicitly account for different molecular geometries with an equation of state. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115676] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Novak N, Kontogeorgis GM, Castier M, Economou IG. Water–Hydrocarbon Phase Equilibria with SAFT-VR Mie Equation of State. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nefeli Novak
- Molecular Thermodynamics and Modelling of Materials Laboratory, National Center for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, GR-153 10 Aghia Paraskevi Attikis, Greece
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Georgios M. Kontogeorgis
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Marcelo Castier
- German-Paraguayan University, 2160 San Lorenzo, Paraguay
- Chemical Engineering Program, Texas A&M University at Qatar, Education City, P.O. Box 23874, Doha, Qatar
| | - Ioannis G. Economou
- Molecular Thermodynamics and Modelling of Materials Laboratory, National Center for Scientific Research “Demokritos”, Institute of Nanoscience and Nanotechnology, GR-153 10 Aghia Paraskevi Attikis, Greece
- Chemical Engineering Program, Texas A&M University at Qatar, Education City, P.O. Box 23874, Doha, Qatar
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16
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Clark JA, Santiso EE. SAFT-γ-Mie Cross-Interaction Parameters from Density Functional Theory-Predicted Multipoles of Molecular Fragments for Carbon Dioxide, Benzene, Alkanes, and Water. J Phys Chem B 2021; 125:3867-3882. [PMID: 33826844 DOI: 10.1021/acs.jpcb.1c00851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Determining unlike-pair interaction parameters, whether for group contribution equation of state or molecular simulations, is a challenge for the prediction of thermodynamic properties. As the number of components and their respective complexity increase, it becomes impractical to fit all the unlike interactions. Lorentz-Berthelot combining rules work well for systems, where the main interactions are dispersion forces, but they do not account for electrostatics. In this work, we derive predictive combining rules within the SAFT-γ-Mie framework. In the resulting model, the unlike-pair interactions account for the effect of ionization energies, partial charges, dipole moments, and quadrupole moments. We then estimate these properties for molecular fragments using density functional theory calculations and demonstrate their use to obtain realistic cross-interaction energies without the need for experimental data. An open-source python package, Multipole Approach to Predictively Scale Cross-Interactions, is included to facilitate use of the methods presented in this work. A good qualitative agreement was obtained for all phase equilibria calculations of binary mixtures containing carbon dioxide with propane, hexane, benzene, and water, as well as mixtures of hexane and benzene. Finally, we discuss future improvements to our methodology, including the use of physical insights when fitting self-interaction parameters.
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Affiliation(s)
- Jennifer A Clark
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina, 27695, United States
| | - Erik E Santiso
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina, 27695, United States
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17
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Alkhatib III, Vega LF. Quantifying the effect of polarity on the behavior of mixtures of
n
‐alkanes
with dipolar solvents using polar
soft‐
statistical associating fluid theory (Polar soft‐SAFT). AIChE J 2020. [DOI: 10.1002/aic.16649] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ismail I. I. Alkhatib
- Chemical Engineering Department, Research and Innovation Center on CO2 and H2 (RICH), and Center for Catalysis and Separation (CeCaS) Khalifa University of Science and Technology Abu Dhabi United Arab Emirates
| | - Lourdes F. Vega
- Chemical Engineering Department, Research and Innovation Center on CO2 and H2 (RICH), and Center for Catalysis and Separation (CeCaS) Khalifa University of Science and Technology Abu Dhabi United Arab Emirates
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18
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Ghandili A, Moeini V. A new analytical modeling for the determination of thermodynamic quantities of refrigerants. AIChE J 2020. [DOI: 10.1002/aic.16293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ali Ghandili
- Department of Scientific and Industrial ResearchWest Azerbaijan Standard Administration Urmia Iran
| | - Vahid Moeini
- Department of ChemistryPayame Noor University Tehran Iran
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19
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Tasche J, Sabattié EFD, Thompson RL, Campana M, Wilson MR. Oligomer/Polymer Blend Phase Diagram and Surface Concentration Profiles for Squalane/Polybutadiene: Experimental Measurements and Predictions from SAFT-γ Mie and Molecular Dynamics Simulations. Macromolecules 2020; 53:2299-2309. [PMID: 32308214 PMCID: PMC7161083 DOI: 10.1021/acs.macromol.9b02155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 02/12/2020] [Indexed: 01/16/2023]
Abstract
The compatibility and surface behavior of squalane-polybutadiene mixtures are studied by experimental cloud point and neutron reflectivity measurements, statistical associating fluid theory (SAFT), and molecular dynamics (MD) simulations. A SAFT-γ Mie model is shown to be successful in capturing the cloud point curves of squalane-polybutadiene and squalane-cis-polybutadiene binary mixtures, and the same SAFT-γ Mie model is used to develop a thermodynamically consistent top-down coarse-grained force field to describe squalane-polybutadiene. Coarse-grained molecular dynamics simulations are performed to study surface behavior for different concentrations of squalane, with the system exhibiting surface enrichment and a wetting transition. Simulated surface profiles are compared with those obtained by fitting to neutron reflectivity data obtained from thin films composed of deuterated squalane (d-sq)-polybutadiene. The presented top-down parametrization methodology is a fast and thermodynamically reliable approach for predicting properties of oligomer-polymer mixtures, which can be challenging for either theory or MD simulations alone.
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Affiliation(s)
- Jos Tasche
- Department of Chemistry, Durham University, Lower Mountjoy, Stockton Road, Durham DH1 3LE, United Kingdom
| | - Elise F D Sabattié
- Department of Chemistry, Durham University, Lower Mountjoy, Stockton Road, Durham DH1 3LE, United Kingdom
| | - Richard L Thompson
- Department of Chemistry, Durham University, Lower Mountjoy, Stockton Road, Durham DH1 3LE, United Kingdom
| | - Mario Campana
- Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, United Kingdom
| | - Mark R Wilson
- Department of Chemistry, Durham University, Lower Mountjoy, Stockton Road, Durham DH1 3LE, United Kingdom
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20
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Hurter RM, Cripwell JT, Burger AJ. Expanding SAFT-γ Mie’s Application to Dipolar Species: 2-Ketones, 3-Ketones, and Propanoate Esters. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruan M. Hurter
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Jamie T. Cripwell
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Andries J. Burger
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
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21
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Aasen A, Hammer M, Müller EA, Wilhelmsen Ø. Equation of state and force fields for Feynman-Hibbs-corrected Mie fluids. II. Application to mixtures of helium, neon, hydrogen, and deuterium. J Chem Phys 2020; 152:074507. [PMID: 32087642 DOI: 10.1063/1.5136079] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We extend the statistical associating fluid theory of quantum corrected Mie potentials (SAFT-VRQ Mie), previously developed for pure fluids [Aasen et al., J. Chem. Phys. 151, 064508 (2019)], to fluid mixtures. In this model, particles interact via Mie potentials with Feynman-Hibbs quantum corrections of first order (Mie-FH1) or second order (Mie-FH2). This is done using a third-order Barker-Henderson expansion of the Helmholtz energy from a non-additive hard-sphere reference system. We survey existing experimental measurements and ab initio calculations of thermodynamic properties of mixtures of neon, helium, deuterium, and hydrogen and use them to optimize the Mie-FH1 and Mie-FH2 force fields for binary interactions. Simulations employing the optimized force fields are shown to follow the experimental results closely over the entire phase envelopes. SAFT-VRQ Mie reproduces results from simulations employing these force fields, with the exception of near-critical states for mixtures containing helium. This breakdown is explained in terms of the extremely low dispersive energy of helium and the challenges inherent in current implementations of the Barker-Henderson expansion for mixtures. The interaction parameters of two cubic equations of state (Soave-Redlich-Kwong and Peng-Robinson) are also fitted to experiments and used as performance benchmarks. There are large gaps in the ranges and properties that have been experimentally measured for these systems, making the force fields presented especially useful.
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Affiliation(s)
- Ailo Aasen
- Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | | | - Erich A Müller
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Øivind Wilhelmsen
- Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
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22
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Aasen A, Hammer M, Ervik Å, Müller EA, Wilhelmsen Ø. Equation of state and force fields for Feynman–Hibbs-corrected Mie fluids. I. Application to pure helium, neon, hydrogen, and deuterium. J Chem Phys 2019. [DOI: 10.1063/1.5111364] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Ailo Aasen
- Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- SINTEF Energy Research, NO-7465 Trondheim, Norway
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Morten Hammer
- SINTEF Energy Research, NO-7465 Trondheim, Norway
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Åsmund Ervik
- SINTEF Energy Research, NO-7465 Trondheim, Norway
| | - Erich A. Müller
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Øivind Wilhelmsen
- Department of Energy and Process Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- SINTEF Energy Research, NO-7465 Trondheim, Norway
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
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23
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Alsaifi NM, Alkhater M, Binous H, Al Aslani I, Alsunni Y, Wang ZG. Nonphysical Behavior in Several Statistical Mechanically Based Equations of State. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b04656] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nayef M. Alsaifi
- Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Mohammed Alkhater
- Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Housam Binous
- Chemical Engineering Department, National Institute of Applied Sciences and Technology, University of Carthage, Carthage 1054, Tunisia
| | - Isa Al Aslani
- Saudi Aramco R&D Center, King Abdullah University of Techology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Yousef Alsunni
- Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Zhen-Gang Wang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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24
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Mitigating Complexity: Cohesion Parameters and Related Topics. I: The Hildebrand Solubility Parameter. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0821-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Cripwell JT, Smith SAM, Schwarz CE, Burger AJ. SAFT-VR Mie: Application to Phase Equilibria of Alcohols in Mixtures with n-Alkanes and Water. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b01042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jamie T. Cripwell
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Sonja A. M. Smith
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Cara E. Schwarz
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
| | - Andries J. Burger
- Department of Process Engineering, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa
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26
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Franco LFM, Economou IG, Castier M. Statistical Mechanical Model for Adsorption Coupled with SAFT-VR Mie Equation of State. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:11291-11298. [PMID: 28910528 DOI: 10.1021/acs.langmuir.7b02686] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We extend the SAFT-VR Mie equation of state to calculate adsorption isotherms by considering explicitly the residual energy due to the confinement effect. Assuming a square-well potential for the fluid-solid interactions, the structure imposed by the fluid-solid interface is calculated using two different approaches: an empirical expression proposed by Travalloni et al. ( Chem. Eng. Sci. 65 , 3088 - 3099 , 2010 ), and a new theoretical expression derived by applying the mean value theorem. Adopting the SAFT-VR Mie ( Lafitte et al. J. Chem. Phys. , 139 , 154504 , 2013 ) equation of state to describe the fluid-fluid interactions, and solving the phase equilibrium criteria, we calculate adsorption isotherms for light hydrocarbons adsorbed in a carbon molecular sieve and for carbon dioxide, nitrogen, and water adsorbed in a zeolite. Good results are obtained from the model using either approach. Nonetheless, the theoretical expression seems to correlate better the experimental data than the empirical one, possibly implying that a more reliable way to describe the structure ensures a better description of the thermodynamic behavior.
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Affiliation(s)
- Luís F M Franco
- School of Chemical Engineering, University of Campinas , Av. Albert Einstein, 500, CEP: 13083-852, Campinas, Brazil
- Chemical Engineering Program, Texas A&M University at Qatar , P.O. Box 23874, Doha, Qatar
| | - Ioannis G Economou
- Chemical Engineering Program, Texas A&M University at Qatar , P.O. Box 23874, Doha, Qatar
| | - Marcelo Castier
- Chemical Engineering Program, Texas A&M University at Qatar , P.O. Box 23874, Doha, Qatar
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27
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Hoang H, Delage-Santacreu S, Galliero G. Simultaneous Description of Equilibrium, Interfacial, and Transport Properties of Fluids Using a Mie Chain Coarse-Grained Force Field. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01397] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai Hoang
- Laboratoire
des Fluides Complexes et Leurs Reservoirs-IPRA, UMR5150, CNRS/Total/Univ Pau Et Pays Adour, 64000, PAU, France
- Institute
of Research and Development, Duy Tan University, Da Nang, Vietnam
| | - Stéphanie Delage-Santacreu
- Laboratoire
de Mathematiques et De Leurs Applications de PAU−IPRA, UMR5142, CNRS/Univ Pau et Pays Adour, 64000, PAU, France
| | - Guillaume Galliero
- Laboratoire
des Fluides Complexes et Leurs Reservoirs-IPRA, UMR5150, CNRS/Total/Univ Pau Et Pays Adour, 64000, PAU, France
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28
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Forte E, Burger J, Langenbach K, Hasse H, Bortz M. Multi-criteria optimization for parameterization of SAFT-type equations of state for water. AIChE J 2017. [DOI: 10.1002/aic.15857] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Esther Forte
- Laboratory of Engineering Thermodynamics; University of Kaiserslautern; Erwin-Schrödinger-Str. 44, Kaiserslautern 67663 Germany
| | - Jakob Burger
- Laboratory of Engineering Thermodynamics; University of Kaiserslautern; Erwin-Schrödinger-Str. 44, Kaiserslautern 67663 Germany
| | - Kai Langenbach
- Laboratory of Engineering Thermodynamics; University of Kaiserslautern; Erwin-Schrödinger-Str. 44, Kaiserslautern 67663 Germany
| | - Hans Hasse
- Laboratory of Engineering Thermodynamics; University of Kaiserslautern; Erwin-Schrödinger-Str. 44, Kaiserslautern 67663 Germany
| | - Michael Bortz
- Fraunhofer Institute for Industrial Mathematics (ITWM); Fraunhofer-Platz 1, Kaiserslautern 67663 Germany
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29
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Jiménez-Serratos G, Herdes C, Haslam AJ, Jackson G, Müller EA. Group Contribution Coarse-Grained Molecular Simulations of Polystyrene Melts and Polystyrene Solutions in Alkanes Using the SAFT-γ Force Field. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02072] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Carmelo Herdes
- Department
of Chemical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Andrew J. Haslam
- Department
of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - George Jackson
- Department
of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - Erich A. Müller
- Department
of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
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30
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Eriksen DK, Lazarou G, Galindo A, Jackson G, Adjiman CS, Haslam AJ. Development of intermolecular potential models for electrolyte solutions using an electrolyte SAFT-VR Mie equation of state. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1236221] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Daniel K. Eriksen
- Department of Chemical Engineering, Qatar Carbonates and Carbon Storage Research Centre, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Georgia Lazarou
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Amparo Galindo
- Department of Chemical Engineering, Qatar Carbonates and Carbon Storage Research Centre, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - George Jackson
- Department of Chemical Engineering, Qatar Carbonates and Carbon Storage Research Centre, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Claire S. Adjiman
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Andrew J. Haslam
- Department of Chemical Engineering, Qatar Carbonates and Carbon Storage Research Centre, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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31
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Brand CV, Graham E, Rodríguez J, Galindo A, Jackson G, Adjiman CS. On the use of molecular-based thermodynamic models to assess the performance of solvents for CO 2 capture processes: monoethanolamine solutions. Faraday Discuss 2016; 192:337-390. [PMID: 27604680 DOI: 10.1039/c6fd00041j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Predictive models play an important role in the design of post-combustion processes for the capture of carbon dioxide (CO2) emitted from power plants. A rate-based absorber model is presented to investigate the reactive capture of CO2 using aqueous monoethanolamine (MEA) as a solvent, integrating a predictive molecular-based equation of state: SAFT-VR SW (Statistical Associating Fluid Theory-Variable Range, Square Well). A distinctive physical approach is adopted to model the chemical equilibria inherent in the process. This eliminates the need to consider reaction products explicitly and greatly reduces the amount of experimental data required to model the absorber compared to the more commonly employed chemical approaches. The predictive capabilities of the absorber model are analyzed for profiles from 10 pilot plant runs by considering two scenarios: (i) no pilot-plant data are used in the model development; (ii) only a limited set of pilot-plant data are used. Within the first scenario, the mass fraction of CO2 in the clean gas is underestimated in all but one of the cases, indicating that a best-case performance of the solvent can be obtained with this predictive approach. Within the second scenario a single parameter is estimated based on data from a single pilot plant run to correct for the dramatic changes in the diffusivity of CO2 in the reactive solvent. This parameter is found to be transferable for a broad range of operating conditions. A sensitivity analysis is then conducted, and the liquid viscosity and diffusivity are found to be key properties for the prediction of the composition profiles. The temperature and composition profiles are sensitive to thermodynamic properties that correspond to major sources of heat generation or dissipation. The proposed modelling framework can be used as an early assessment of solvents to aid in narrowing the search space, and can help in determining target solvents for experiments and more detailed modelling.
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Affiliation(s)
- Charles V Brand
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Edward Graham
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Javier Rodríguez
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Amparo Galindo
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - George Jackson
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
| | - Claire S Adjiman
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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32
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Werth S, Stöbener K, Horsch M, Hasse H. Simultaneous description of bulk and interfacial properties of fluids by the Mie potential. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1206218] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Stephan Werth
- Department of Mechanical and Process Engineering, Laboratory of Engineering Thermodynamics, University of Kaiserslautern, Kaiserslautern, Germany
| | - Katrin Stöbener
- Department for Optimization, Fraunhofer Institute for Industrial Mathematics, Kaiserslautern, Germany
| | - Martin Horsch
- Department of Mechanical and Process Engineering, Laboratory of Engineering Thermodynamics, University of Kaiserslautern, Kaiserslautern, Germany
| | - Hans Hasse
- Department of Mechanical and Process Engineering, Laboratory of Engineering Thermodynamics, University of Kaiserslautern, Kaiserslautern, Germany
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33
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Mick JR, Soroush Barhaghi M, Jackman B, Rushaidat K, Schwiebert L, Potoff JJ. Optimized Mie potentials for phase equilibria: Application to noble gases and their mixtures with n-alkanes. J Chem Phys 2015; 143:114504. [DOI: 10.1063/1.4930138] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Jason R. Mick
- Department of Chemical Engineering and Materials Science, College of Engineering, Wayne State University, Detroit, Michigan 48202, USA
| | - Mohammad Soroush Barhaghi
- Department of Chemical Engineering and Materials Science, College of Engineering, Wayne State University, Detroit, Michigan 48202, USA
| | - Brock Jackman
- Department of Computer Science, College of Engineering, Wayne State University, Detroit, Michigan 48202, USA
| | - Kamel Rushaidat
- Department of Computer Science, College of Engineering, Wayne State University, Detroit, Michigan 48202, USA
| | - Loren Schwiebert
- Department of Computer Science, College of Engineering, Wayne State University, Detroit, Michigan 48202, USA
| | - Jeffrey J. Potoff
- Department of Chemical Engineering and Materials Science, College of Engineering, Wayne State University, Detroit, Michigan 48202, USA
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34
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Dufal S, Lafitte T, Haslam AJ, Galindo A, Clark GN, Vega C, Jackson G. The A in SAFT: developing the contribution of association to the Helmholtz free energy within a Wertheim TPT1 treatment of generic Mie fluids. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1029027] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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