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Faramarzi E, Maghari A. SAFT-VR modelling of the surface and bulk properties of imidazolium and pyridinium based ionic liquids with ten different anions. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.10.076] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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2
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Morgado P, Lobanova O, Müller EA, Jackson G, Almeida M, Filipe EJM. SAFT-γ force field for the simulation of molecular fluids: 8. Hetero-segmented coarse-grained models of perfluoroalkylalkanes assessed with new vapour–liquid interfacial tension data. Mol Phys 2016. [DOI: 10.1080/00268976.2016.1218077] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Pedro Morgado
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Olga Lobanova
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Erich A. Müller
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - George Jackson
- Department of Chemical Engineering, Centre for Process Systems Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Miguel Almeida
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Eduardo J. M. Filipe
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
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3
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Haley JD, Iacovella CR, Cummings PT, McCabe C. Examining the aggregation behavior of polymer grafted nanoparticles using molecular simulation and theory. J Chem Phys 2015; 143:054904. [DOI: 10.1063/1.4927819] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Jessica D. Haley
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, USA
- Multiscale Modeling and Simulation (MuMS) Center, Vanderbilt University, Nashville, Tennessee 37235, USA
| | - Christopher R. Iacovella
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, USA
- Multiscale Modeling and Simulation (MuMS) Center, Vanderbilt University, Nashville, Tennessee 37235, USA
| | - Peter T. Cummings
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, USA
- Multiscale Modeling and Simulation (MuMS) Center, Vanderbilt University, Nashville, Tennessee 37235, USA
| | - Clare McCabe
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, USA
- Multiscale Modeling and Simulation (MuMS) Center, Vanderbilt University, Nashville, Tennessee 37235, USA
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
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4
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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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5
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Morgado P, Das G, McCabe C, Filipe EJM. Vapor pressure of perfluoroalkylalkanes: the role of the dipole. J Phys Chem B 2015; 119:1623-32. [PMID: 25526174 DOI: 10.1021/jp5109448] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The vapor pressure of four liquid perfluoroalkylalkanes (CF3(CF2)n(CH2)mCH3; n = 3, m = 4,5,7; n = 5, m = 5) was measured as a function of temperature between 278 and 328 K. Molar enthalpies of vaporization were calculated from the experimental data, and the results were compared with data from the literature for the corresponding alkanes and perfluoroalkanes. The heterosegmented statistical associating fluid theory was used to interpret the results at the molecular level both with and without the explicit inclusion of the dipolar nature of the molecules. Additionally, ab initio calculations were performed for all perfluoroalkylalkanes studied to determine the dipole moment to be used in the theoretical calculations. We demonstrate that the inclusion of a dipolar term is essential for describing the vapor-liquid equilibria of perfluoroalkylalkanes. It is also shown that vapor-liquid equilibria in these compounds result from a subtle balance between dipolar interactions, which decrease the vapor pressure, and the relatively weak dispersive interactions between the hydrogenated and fluorinated segments.
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Affiliation(s)
- Pedro Morgado
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa , 1049-001 Lisboa, Portugal
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Sauer E, Stavrou M, Gross J. Comparison between a Homo- and a Heterosegmented Group Contribution Approach Based on the Perturbed-Chain Polar Statistical Associating Fluid Theory Equation of State. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502203w] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Elmar Sauer
- Institute of Thermodynamics
and Thermal
Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
| | - Marina Stavrou
- Institute of Thermodynamics
and Thermal
Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
| | - Joachim Gross
- Institute of Thermodynamics
and Thermal
Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
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Papaioannou V, Lafitte T, Avendaño C, Adjiman CS, Jackson G, Müller EA, Galindo A. Group contribution methodology based on the statistical associating fluid theory for heteronuclear molecules formed from Mie segments. J Chem Phys 2014; 140:054107. [DOI: 10.1063/1.4851455] [Citation(s) in RCA: 193] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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8
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Vijande J, Piñeiro MM, Legido JL. Group-Contribution Method with Proximity Effect for PC-SAFT Molecular Parameters. 2. Application to Association Parameters: Primary Alcohols and Amines. Ind Eng Chem Res 2013. [DOI: 10.1021/ie4023786] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Javier Vijande
- Departamento de Física
Aplicada, Edificio de Ciencias Experimentais, Universidade de Vigo, E-36310 Vigo, Spain
| | - Manuel M. Piñeiro
- Departamento de Física
Aplicada, Edificio de Ciencias Experimentais, Universidade de Vigo, E-36310 Vigo, Spain
| | - José L. Legido
- Departamento de Física
Aplicada, Edificio de Ciencias Experimentais, Universidade de Vigo, E-36310 Vigo, Spain
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Jiménez-Serratos G, Gil-Villegas A, Vega C, Blas FJ. Monte Carlo simulation of flexible trimers: From square well chains to amphiphilic primitive models. J Chem Phys 2013; 139:114901. [PMID: 24070305 DOI: 10.1063/1.4820530] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Guadalupe Jiménez-Serratos
- Departamento de Ingeniería Física, División de Ciencias e Ingenierías Campus León, Universidad de Guanajuato, Colonia Lomas del Campestre, León 37150, Mexico
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Lafitte T, Avendaño C, Papaioannou V, Galindo A, Adjiman CS, Jackson G, Müller EA. SAFT-γforce field for the simulation of molecular fluids: 3. Coarse-grained models of benzene and hetero-group models ofn-decylbenzene. Mol Phys 2012. [DOI: 10.1080/00268976.2012.662303] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Morgado P, Lewis JB, Laginhas CMC, Martins LFG, McCabe C, Blas FJ, Filipe EJM. Systems Involving Hydrogenated and Fluorinated Chains: Volumetric Properties of Perfluoroalkanes and Perfluoroalkylalkane Surfactants. J Phys Chem B 2011; 115:15013-23. [DOI: 10.1021/jp207567y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Pedro Morgado
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - J. Ben Lewis
- Department of Chemical and Biomolecular Engineering and Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Carlos M. C. Laginhas
- Centro de Química de Évora, Universidade de Évora, Rua Romão Ramalho, 59, 7000-671 Évora, Portugal
| | - Luís F. G. Martins
- Centro de Química de Évora, Universidade de Évora, Rua Romão Ramalho, 59, 7000-671 Évora, Portugal
| | - Clare McCabe
- Department of Chemical and Biomolecular Engineering and Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Felipe J. Blas
- Departamento de Física Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain
| | - Eduardo J. M. Filipe
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
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Morgado P, Laginhas CMC, Lewis JB, McCabe C, Martins LFG, Filipe EJM. Viscosity of Liquid Perfluoroalkanes and Perfluoroalkylalkane Surfactants. J Phys Chem B 2011; 115:9130-9. [DOI: 10.1021/jp201364k] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Pedro Morgado
- Centro de Química Estrutural, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
| | - Carlos M. C. Laginhas
- Centro de Química de Évora, Universidade de Évora, Rua Romão Ramalho, 59, 7000-671 Évora, Portugal
| | | | | | - Luís F. G. Martins
- Centro de Química de Évora, Universidade de Évora, Rua Romão Ramalho, 59, 7000-671 Évora, Portugal
| | - Eduardo J. M. Filipe
- Centro de Química Estrutural, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
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dos Ramos MC, Blas FJ. Theoretical investigation of the phase behaviour of mixtures of a novel family of perfluoroalkyl–polyoxyethylene ether diblock surfactants in aqueous solutions of carbon dioxide. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.10.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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dos Ramos MC, Blas FJ. Theoretical investigation of the phase behaviour of model ternary mixtures containingn-alkanes, perfluoro-n-alkanes, and perfluoroalkylalkane diblock surfactants. Mol Phys 2010. [DOI: 10.1080/00268971003692000] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Tan SP, Adidharma H, Radosz M. Recent Advances and Applications of Statistical Associating Fluid Theory. Ind Eng Chem Res 2008. [DOI: 10.1021/ie8008764] [Citation(s) in RCA: 241] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Sugata P. Tan
- Soft Material Laboratory, Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, Wyoming 82071
| | - Hertanto Adidharma
- Soft Material Laboratory, Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, Wyoming 82071
| | - Maciej Radosz
- Soft Material Laboratory, Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, Wyoming 82071
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Lymperiadis A, Adjiman CS, Galindo A, Jackson G. A group contribution method for associating chain molecules based on the statistical associating fluid theory (SAFT-γ). J Chem Phys 2007; 127:234903. [DOI: 10.1063/1.2813894] [Citation(s) in RCA: 199] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Carolina Dos Ramos M, Blas FJ. Theory of phase equilibria for model mixtures of n-alkanes, perfluoroalkanes and perfluoroalkylalkane diblock surfactants. Mol Phys 2007. [DOI: 10.1080/00268970701297575] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Morgado P, Zhao H, Blas FJ, McCabe C, Rebelo LPN, Filipe EJM. Liquid Phase Behavior of Perfluoroalkylalkane Surfactants. J Phys Chem B 2007; 111:2856-63. [PMID: 17388407 DOI: 10.1021/jp063136d] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We have performed a combined experimental and theoretical study of the thermodynamic properties of semifluorinated alkanes. In particular, the liquid density of perfluorohexylhexane (F6H6) and perfluorohexyloctane (F6H8) has been measured as a function of temperature from 273.15 to 353.15 K and at four temperatures as a function of pressure up to 600 bar. The results were interpreted using the SAFT-VR equation of state. The perfluoroalkylalkanes were modeled as heterosegmented diblock chains using parameters for the alkyl and perfluoroalkyl segments developed in earlier work. Through this simple approach, we are able to predict the thermodynamic behavior of the perfluoroalkylalkanes studied without fitting to any experimental data for the systems being studied.
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Affiliation(s)
- Pedro Morgado
- Centro de Química Estrutural, Instituto Superior Técnico, 1049-001 Lisboa, Portugal
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19
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Martinez A, Castro M, McCabe C, Gil-Villegas A. Predicting adsorption isotherms using a two-dimensional statistical associating fluid theory. J Chem Phys 2007; 126:074707. [PMID: 17328627 DOI: 10.1063/1.2483505] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A molecular thermodynamics approach is developed in order to describe the adsorption of fluids on solid surfaces. The new theory is based on the statistical associating fluid theory for potentials of variable range [A. Gil-Villegas et al., J. Chem. Phys. 106, 4168 (1997)] and uses a quasi-two-dimensional approximation to describe the properties of adsorbed fluids. The theory is tested against Gibbs ensemble Monte Carlo simulations and excellent agreement with the theoretical predictions is achieved. Additionally the authors use the new approach to describe the adsorption isotherms for nitrogen and methane on dry activated carbon.
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Affiliation(s)
- Alejandro Martinez
- Instituto de Fisica, Universidad de Guanajuato, Lomas del Bosque 103, Colonia Lomas del Campestre, Leon 37150, Mexico
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20
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Peng Y, McCabe C. Molecular simulation and theoretical modeling of polyhedral oligomeric silsesquioxanes. Mol Phys 2007. [DOI: 10.1080/00268970701189244] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zhao H, McCabe C. Phase behavior of dipolar fluids from a modified statistical associating fluid theory for potentials of variable range. J Chem Phys 2006; 125:104504. [PMID: 16999538 DOI: 10.1063/1.2337624] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A statistical associating fluid theory for potentials of variable range to model dipolar fluids is presented. The new theory, termed the SAFT-VR+D equation (the statistical associating fluid theory for potentials of variable range plus dipole), explicitly accounts for dipolar interactions and their effect on the structure of the fluid. This is achieved through the use of the generalized mean spherical approximation (GMSA) to describe a reference fluid of dipolar square-well segments. Isothermal-isobaric and Gibbs ensemble Monte Carlo simulations have been performed in order to test the new theoretical approach. Predictions for the thermodynamic properties and phase behavior of dipolar square-well monomer and chain fluids, in which one or more segments are dipolar, are considered and compared with new computer simulation data. The results show that the equation of state in general provides a good description of the phase behavior of dipolar monomer and chain fluids. Some deviations are seen between the simulation data and theoretical predictions for monomer fluids with large dipole moments and for molecules composed of segments with dipoles in different orientations. This is addressed through the replacement of the GMSA by the linearized exponential approximation.
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Affiliation(s)
- Honggang Zhao
- Department of Chemical Engineering, Vanderbilt University, Nashville, TN 37235, USA
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