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McCalmont SH, Vaz ICM, Oorts H, Gong Z, Moura L, Costa Gomes M. Insights into the Absorption of Hydrocarbon Gases in Phosphorus-Containing Ionic Liquids. J Phys Chem B 2023; 127:3402-3415. [PMID: 36867065 DOI: 10.1021/acs.jpcb.2c08051] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
The solubility of ethane, ethylene, propane, and propylene was measured in two phosphorus-containing ionic liquids, trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate, [P6,6,6,14][DiOP], and 1-butyl-3-methylimidazolium dimethylphosphate, [C4C1Im][DMP], using an isochoric saturation method. The ionic liquid [C4C1Im][DMP] absorbed between 1 and 20 molecules of gas per 1000 ion pairs, at 313 K and 0.1 MPa, while [P6,6,6,14][DiOP] absorbed up to 169 molecules of propane per 1000 ion pairs under the same conditions. [C4C1Im][DMP] had a higher capacity to absorb olefins than paraffins, while the opposite was true for [P6,6,6,14][DiOP], with the former being slightly more selective than the later. From the analysis of the thermodynamic properties of solvation, we concluded that in both ionic liquids and for all of the studied gases the solvation is ruled by the entropy, even if its contribution is unfavorable. These results, together with density measurements, 2D NMR studies, and self-diffusion coefficients suggest that the gases' solubility is ruled mostly by nonspecific interactions with the ionic liquids and that the looser ion packing in [P6,6,6,14][DiOP] makes it easier to accommodate the gases compared to [C4C1Im][DMP].
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Affiliation(s)
- Sam H McCalmont
- QUILL Research Centre, Queen's University Belfast, School of Chemistry and Chemical Engineering, David Keir Building, 39-123 Stranmillis Road, Belfast BT9 5AG, U.K
| | - Inês C M Vaz
- Laboratoire de Chimie de l'ENS Lyon, CNRS and Université de Lyon, 46 allée d'Italie, 69364 Lyon, France
| | - Hanne Oorts
- Laboratoire de Chimie de l'ENS Lyon, CNRS and Université de Lyon, 46 allée d'Italie, 69364 Lyon, France
| | - Zheng Gong
- Laboratoire de Chimie de l'ENS Lyon, CNRS and Université de Lyon, 46 allée d'Italie, 69364 Lyon, France
| | - Leila Moura
- QUILL Research Centre, Queen's University Belfast, School of Chemistry and Chemical Engineering, David Keir Building, 39-123 Stranmillis Road, Belfast BT9 5AG, U.K
| | - Margarida Costa Gomes
- Laboratoire de Chimie de l'ENS Lyon, CNRS and Université de Lyon, 46 allée d'Italie, 69364 Lyon, France
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Vaz ICM, Lobo Ferreira AIMC, Silva GMC, Morgado P, Abranches DO, Bastos M, Santos LMNBF, Filipe EJM, Coutinho JAP. The path towards type V deep eutectic solvents: inductive effect and steric hindrance in the system tert-butanol + perfluoro tert-butanol. Phys Chem Chem Phys 2023; 25:11227-11236. [PMID: 37039782 DOI: 10.1039/d3cp00701d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
The solid-liquid phase behaviour of two tertiary alcohols, perfluoro-tert-butanol and tert-butanol, was here studied using experimental (ITC, DSC and density measurements) and theoretical (MD simulations) approaches. The phase diagram of...
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Affiliation(s)
- Inês C M Vaz
- CIQUP, Institute of Molecular Sciences (IMS) - Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, P-4169-007 Porto, Portugal
- Laboratoire de Chimie de l'ENS Lyon, CNRS and Université de Lyon, 46 allée d'Italie, 69364 Lyon, France
| | - Ana I M C Lobo Ferreira
- CIQUP, Institute of Molecular Sciences (IMS) - Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, P-4169-007 Porto, Portugal
| | - Gonçalo M C Silva
- CQE, Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal.
| | - Pedro Morgado
- CQE, Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Dinis O Abranches
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal.
| | - Margarida Bastos
- CIQUP, Institute of Molecular Sciences (IMS) - Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, P-4169-007 Porto, Portugal
| | - Luís M N B F Santos
- CIQUP, Institute of Molecular Sciences (IMS) - Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, P-4169-007 Porto, Portugal
| | - Eduardo J M Filipe
- CQE, Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - João A P Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, Aveiro, Portugal.
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Bakis E, Goloviznina K, Vaz ICM, Sloboda D, Hazens D, Valkovska V, Klimenkovs I, Padua A, Costa Gomes M. Unravelling free volume in branched-cation ionic liquids based on silicon. Chem Sci 2022; 13:9062-9073. [PMID: 36091212 PMCID: PMC9365092 DOI: 10.1039/d2sc01696f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 07/02/2022] [Indexed: 11/21/2022] Open
Abstract
The branching of ionic liquid cation sidechains utilizing silicon as the backbone was explored and it was found that this structural feature leads to fluids with remarkably low density and viscosity. The relatively low liquid densities suggest a large free volume in these liquids. Argon solubility was measured using a precise saturation method to probe the relative free volumes. Argon molar solubilities were slightly higher in ionic liquids with alkylsilane and siloxane groups within the cation, compared to carbon-based branched groups. The anion size, however, showed by far the dominant effect on argon solubility. Thermodynamic solvation parameters were derived from the solubility data and the argon solvation environment was modelled utilizing the polarizable CL&Pol force field. Semiquantitative analysis was in agreement with trends established from the experimental data. The results of this investigation demonstrate design principles for targeted ionic liquids when optimisation for the free volume is required, and demonstrate the utility of argon as a simple, noninteracting probe. As more ionic liquids find their way into industrial processes of scale, these findings are important for their utilisation in the capture of any gaseous solute, gas separation, or in processes involving the transformation of gases or small molecules. The branching of ionic liquid cation sidechains utilizing silicon as the backbone was explored and it was found that this structural feature leads to fluids with remarkably low density and viscosity.![]()
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Affiliation(s)
- Eduards Bakis
- Faculty of Chemistry, University of Latvia, Jelgavas 1, Riga, LV-1004, Latvia
| | - Kateryna Goloviznina
- Laboratoire de Chimie, ENS de Lyon and CNRS, 46 Allée D’Italie, Lyon 69364, France
| | - Inês C. M. Vaz
- Laboratoire de Chimie, ENS de Lyon and CNRS, 46 Allée D’Italie, Lyon 69364, France
| | - Diana Sloboda
- Faculty of Chemistry, University of Latvia, Jelgavas 1, Riga, LV-1004, Latvia
| | - Daniels Hazens
- Faculty of Chemistry, University of Latvia, Jelgavas 1, Riga, LV-1004, Latvia
| | - Valda Valkovska
- Faculty of Chemistry, University of Latvia, Jelgavas 1, Riga, LV-1004, Latvia
| | - Igors Klimenkovs
- Faculty of Chemistry, University of Latvia, Jelgavas 1, Riga, LV-1004, Latvia
| | - Agilio Padua
- Laboratoire de Chimie, ENS de Lyon and CNRS, 46 Allée D’Italie, Lyon 69364, France
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Vaz ICM, Bastos M, Bernardes CES, Canongia Lopes JN, Santos LMNBF. Solvation of alcohols in ionic liquids – understanding the effect of the anion and cation. Phys Chem Chem Phys 2018; 20:2536-2548. [DOI: 10.1039/c7cp07525a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The effect of the anion and cation nature in the solvation of alcohols in ionic liquids highlighting the R-OH anion H-bond interaction is analysed.
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Affiliation(s)
- Inês C. M. Vaz
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
| | - Margarida Bastos
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
| | - Carlos E. S. Bernardes
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- P-1049-001 Lisboa
- Portugal
| | - José N. Canongia Lopes
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- P-1049-001 Lisboa
- Portugal
| | - Luís M. N. B. F. Santos
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
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Ribeiro FMS, Lima CFRAC, Vaz ICM, Rodrigues ASMC, Sapei E, Melo A, Silva AMS, Santos LMNBF. Vaporization of protic ionic liquids derived from organic superbases and short carboxylic acids. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp02023f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Evaluation of the phase behavior and cohesive energy of DBN/DBU and carboxylic acid based protic ionic liquids (PILs).
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Affiliation(s)
- Filipe M. S. Ribeiro
- CIQUP
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- Porto
- Portugal
| | - Carlos F. R. A. C. Lima
- CIQUP
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- Porto
- Portugal
| | - Inês C. M. Vaz
- CIQUP
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- Porto
- Portugal
| | - Ana S. M. C. Rodrigues
- CIQUP
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- Porto
- Portugal
| | - Erlin Sapei
- Department of Biotechnology and Chemical Technology
- School of Chemical Technology
- Aalto University
- Aalto
- Finland
| | - André Melo
- LAQV-REQUIMTE
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- Porto
- Portugal
| | | | - Luís M. N. B. F. Santos
- CIQUP
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- Porto
- Portugal
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Vaz ICM, Bhattacharjee A, Rocha MAA, Coutinho JAP, Bastos M, Santos LMNBF. Alcohols as molecular probes in ionic liquids: evidence for nanostructuration. Phys Chem Chem Phys 2016; 18:19267-75. [DOI: 10.1039/c6cp03616c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comprehensive study of the solution and solvation of linear alcohols (propan-1-ol, butan-1-ol and pentan-1-ol) in ionic liquids (ILs) is presented.
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Affiliation(s)
- Inês C. M. Vaz
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
| | - Arijit Bhattacharjee
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
| | - Marisa A. A. Rocha
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
| | - João A. P. Coutinho
- Departamento de Química
- CICECO
- Universidade de Aveiro
- P-3810-193 Aveiro
- Portugal
| | - Margarida Bastos
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
| | - Luís M. N. B. F. Santos
- Centro de Investigação em Química
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade do Porto
- P-4169-007 Porto
- Portugal
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