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Ryzhikov A, Dirand C, Astafan A, Nouali H, Daou TJ, Bezverkhyy I, Chaplais G, Bellat JP. Calorimetric Heats of Intrusion of LiCl Aqueous Solutions in Hydrophobic MFI-Type Zeosil: Influence of the Concentration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8827-8835. [PMID: 38626757 DOI: 10.1021/acs.langmuir.3c03931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
For the first time, we report calorimetric measurements of intrusion of aqueous LiCl solutions in a hydrophobic pure siliceous MFI zeolite (silicalite-1) under high pressure. Our results show that the intrusion heats are strongly dependent on the LiCl concentration. The intrusion process is endothermic for diluted solutions (molar H2O/LiCl = 12) as well as for water, but it becomes exothermic for a concentration close to saturation (molar H2O/LiCl = 4). Analysis of the data in the framework of wetting thermodynamics shows that besides surface wetting, other phenomena occur during intrusion, such as hydrogen-bond weakening and composition change. In all cases, water is preferentially intruded so that the intruded phase becomes more diluted than the bulk solution. In the case of the most diluted solution, only water molecules seemed to be intruded. Furthermore, silicalite-1 is shown to be very stable in the presence of LiCl solution, with no noticeable structural and textural modifications observed after intrusion.
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Affiliation(s)
- Andrey Ryzhikov
- Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 CNRS, Axe Matériaux à Porosité Contrôlée (MPC), Université de Haute-Alsace, F-68100 Mulhouse, France
- Université de Strasbourg, F-67000 Strasbourg, France
| | - Céline Dirand
- Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne, F-21078 Dijon, France
| | - Amir Astafan
- Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 CNRS, Axe Matériaux à Porosité Contrôlée (MPC), Université de Haute-Alsace, F-68100 Mulhouse, France
- Université de Strasbourg, F-67000 Strasbourg, France
| | - Habiba Nouali
- Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 CNRS, Axe Matériaux à Porosité Contrôlée (MPC), Université de Haute-Alsace, F-68100 Mulhouse, France
- Université de Strasbourg, F-67000 Strasbourg, France
| | - T Jean Daou
- Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 CNRS, Axe Matériaux à Porosité Contrôlée (MPC), Université de Haute-Alsace, F-68100 Mulhouse, France
- Université de Strasbourg, F-67000 Strasbourg, France
| | - Igor Bezverkhyy
- Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne, F-21078 Dijon, France
| | - Gérald Chaplais
- Institut de Science des Matériaux de Mulhouse (IS2M), UMR 7361 CNRS, Axe Matériaux à Porosité Contrôlée (MPC), Université de Haute-Alsace, F-68100 Mulhouse, France
- Université de Strasbourg, F-67000 Strasbourg, France
| | - Jean-Pierre Bellat
- Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université de Bourgogne, F-21078 Dijon, France
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Bushuev YG, Grosu Y, Chorążewski M. Spontaneous Dipole Reorientation in Confined Water and Its Effect on Wetting/Dewetting of Hydrophobic Nanopores. ACS APPLIED MATERIALS & INTERFACES 2024; 16:7604-7616. [PMID: 38300737 PMCID: PMC10875646 DOI: 10.1021/acsami.3c17272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 02/03/2024]
Abstract
The properties of nanoconfined fluids are important for a broad range of natural and engineering systems. In particular, wetting/dewetting of hydrophobic nanoporous materials is crucial due to their broad applicability for molecular separation and liquid purification; energy storage, conversion, recuperation, and dissipation; for catalysis, chromatography, and so on. In this work, a rapid, orchestrated, and spontaneous dipole reorientation was observed in hydrophobic nanotubes of various pore sizes d (7.9-16.5 Å) via simulations. This phenomenon leads to the fragmentation of water clusters in the narrow nanopores (d = 7.9, 10 Å) and strongly affects dewetting through cluster repulsion. The cavitation in these pores has an electrostatic origin. The dependence of hydrogen-bonded network properties on the tube aperture is obtained and is used to explain wetting (intrusion)-dewetting (extrusion) hysteresis. Computer simulations and experimental data demonstrate that d equals ca. 12.5 Å is a threshold between a nonhysteretic (spring) behavior, where intrusion-extrusion is reversible, and a hysteretic one (shock absorber), where hysteresis is prominent. This work suggests that water clustering and the electrostatic nature of cavitation are important factors that can be effectively exploited for controlling the wetting/dewetting of nanoporous materials.
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Affiliation(s)
- Yuriy G. Bushuev
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
| | - Yaroslav Grosu
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
- Centre
for Cooperative Research on Alternative Energies (CIC EnergiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein
48, Vitoria, Gasteiz 01510, Spain
| | - Mirosław Chorążewski
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9 Street, 40-006 Katowice, Poland
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Bratko D. Reversible Surface Energy Storage in Molecular-Scale Porous Materials. Molecules 2024; 29:664. [PMID: 38338408 PMCID: PMC10856011 DOI: 10.3390/molecules29030664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
Forcible wetting of hydrophobic pores represents a viable method for energy storage in the form of interfacial energy. The energy used to fill the pores can be recovered as pressure-volume work upon decompression. For efficient recovery, the expulsion pressure should not be significantly lower than the pressure required for infiltration. Hysteresis of the wetting/drying cycle associated with the kinetic barrier to liquid expulsion results in energy dissipation and reduced storage efficiency. In the present work, we use open ensemble (Grand Canonical) Monte Carlo simulations to study the improvement of energy recovery with decreasing diameters of planar pores. Near-complete reversibility is achieved at pore widths barely accommodating a monolayer of the liquid, thus minimizing the area of the liquid/gas interface during the cavitation process. At the same time, these conditions lead to a steep increase in the infiltration pressure required to overcome steric wall/water repulsion in a tight confinement and a considerable reduction in the translational entropy of confined molecules. In principle, similar effects can be expected when increasing the size of the liquid particles without altering the absorbent porosity. While the latter approach is easier to follow in laboratory work, we discuss the advantages of reducing the pore diameter, which reduces the cycling hysteresis while simultaneously improving the stored-energy density in the material.
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Affiliation(s)
- Dusan Bratko
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23221, USA
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de Izarra A, Coudert FX, Fuchs AH, Boutin A. Molecular Simulation of the Impact of Defects on Electrolyte Intrusion in Zeolites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:19056-19063. [PMID: 38088342 DOI: 10.1021/acs.langmuir.3c03306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
We have investigated through molecular simulation the intrusion of electrolytes in two representative pure-silica zeolites, silicalite-1 and chabazite, in which point defects were introduced in varying amounts. We distinguish between two types of defects, considering either "weak" or "strong" silanol nest defects, resulting in different hydration behaviors. In the presence of weak defects, the hydration process occurs through a homogeneous nucleation process, while with strong defects, we observe an initial adsorption followed by a filling of the nanoporous volume at a higher pressure. However, we show that electrolytes do not penetrate the zeolites, and these defects appear to have only marginal influence on the thermodynamics of electrolyte intrusion. While replacing pure water by the electrolyte solution shifts the intrusion pressure toward higher values because of the drop of water saturation vapor pressure, an increase in hydrophilicity of the framework due to point defects has the opposite effect, showing that controlling the amount of defects in zeolites is crucial for storage energy applications.
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Affiliation(s)
- Ambroise de Izarra
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - François-Xavier Coudert
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Alain H Fuchs
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Anne Boutin
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
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Izarra AD, Coudert FX, Fuchs AH, Boutin A. Alchemical Osmostat for Monte Carlo Simulation: Sampling Aqueous Electrolyte Solution in Open Systems. J Phys Chem B 2023; 127:766-776. [PMID: 36634303 DOI: 10.1021/acs.jpcb.2c07902] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Molecular simulations involving electrolytes are usually performed at a fixed amount of salt ions in the simulation box, reproducing macroscopic concentration. Although this statement is valid in the bulk, the concentration of an electrolyte confined in nanoporous materials such as MOFs or zeolites is greatly affected and remains a priori unknown. The nanoporous material in equilibrium with the bulk electrolyte exchange water and ions at a given chemical potential Δμ in the semi-grand-canonical ensemble, that must be calibrated in order to determine the concentration in the nanoporous material. In this work, we propose an algorithm based on nonequilibrium candidate Monte Carlo (NCMC) moves to ultimately perform MC simulations in contact with a saline reservoir. First, we adapt the Widom insertion technique to calibrate the chemical potential by alchemically transmuting water molecules into ions by using NCMC moves. The chemical potential defines a Monte Carlo osmostat in the semi-grand-constant volume and temperature ensemble (Δμ, N, V, T) to be added in a Monte Carlo simulation where the number of ions fluctuates. In order to validate the method, we adapted the NCMC move to determine the free energy of water solvation and subsequently explore thermodynamics of electrolyte solvation at infinite dilution in water. Finally, we implemented the osmostat in MC simulations initialized with bulk water that are driven toward electrolyte solutions of similar concentration as the saline reservoir. Our results demonstrate that alchemical osmostat for MC simulation is a promising tool for use to sample electrolyte insertion in nanoporous materials.
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Affiliation(s)
- Ambroise de Izarra
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France.,Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris75005, France
| | - François-Xavier Coudert
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris75005, France
| | - Alain H Fuchs
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris75005, France
| | - Anne Boutin
- PASTEUR, Département de Chimie, École Normale Supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
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Confalonieri G, Vezzalini G, Quattrini F, Quartieri S, Dejoie C, Arletti R. Ce-exchange capacity of zeolite L in different cationic forms: a structural investigation. J Appl Crystallogr 2021. [DOI: 10.1107/s1600576721010827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Cerium exchange by microporous materials, such as zeolites, has important applications in different fields, for example, rare earth element recovery from waste or catalytic processes. This work investigated the Ce-exchange capacity of zeolite L in three different cationic forms (the as-synthesized K form and Na- and NH4-exchanged ones) from a highly concentrated solution. Chemical analyses and structural investigations allowed determination of the mechanisms involved in the exchanges and give new insights into the interactions occurring between the cations and the zeolite framework. Different cation sites are involved: (i) K present in the original LTL in the cancrinite cage (site KB) cannot be exchanged; (ii) the cations in KD (in the 12-membered ring channel) are always exchanged; while (iii) site KC (in the eight-membered ring channel) is involved only when K+ is substituted by NH4
+, thus promoting a higher exchange rate for NH4
+ → K+ than for Na+ → K+. In the Ce-exchanged samples, a new site occupied by Ce appears in the centre of the main channel, accompanied by an increase in the number of and a rearrangement of H2O molecules. In terms of Ce exchange, the three cationic forms behave similarly, from both the chemical and structural point of view (exchanged Ce ranges from 38 to 42% of the pristine cation amount). Beyond the intrinsic structural properties of the zeolite L framework, the Ce exchange seems thus also governed by the water coordination sphere of the cation. Complete Ce recovery from zeolite pores was achieved.
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Mochizuki K. Absorption of mechanical energy via formation of ice nanotubes in zeolites. Phys Chem Chem Phys 2021; 23:20307-20312. [PMID: 34486614 DOI: 10.1039/d1cp01482j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular dynamics simulations are carried out for a heterogeneous system composed of bulk water and pure-silica zeolites of the AFI type. My simulations show, for the first time, the spontaneous crystallization of water in hydrophobic zeolite channels by compression, while the water outside remains liquid. The formation of ice nanotubes results in a molecular bumper behavior in the absence of chemical reactions, although the mechanism has been explained by the appearance of silanol defects. In contrast, the same zeolite-water system exhibits a weak shock-absorber behavior at higher temperatures. My study shows that the phase transitions of confined water dramatically change its intrusion/extrusion behavior and alter the energetic performance by varying the temperature alone. The results offer a new perspective for a better design of hydrophobic nanoporous materials utilized with water.
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Affiliation(s)
- Kenji Mochizuki
- Department of Chemistry, Zhejiang University, 148 Tianmushan Road, Hangzhou, Zhejiang, 310028, P. R. China.
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Confalonieri G, Daou TJ, Nouali H, Arletti R, Ryzhikov A. Energetic Performance of Pure Silica Zeolites under High-Pressure Intrusion of LiCl Aqueous Solutions: An Overview. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25092145. [PMID: 32375316 PMCID: PMC7248837 DOI: 10.3390/molecules25092145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 11/16/2022]
Abstract
An overview of all the studies on high-pressure intrusion-extrusion of LiCl aqueous solutions in hydrophobic pure silica zeolites (zeosils) for absorption and storage of mechanical energy is presented. Operational principles of heterogeneous lyophobic systems and their possible applications in the domains of mechanical energy storage, absorption, and generation are described. The intrusion of LiCl aqueous solutions instead of water allows to considerably increase energetic performance of zeosil-based systems by a strong rise of intrusion pressure. The intrusion pressure increases with the salt concentration and depends considerably on zeosil framework. In the case of channel-type zeosils, it rises with the decrease of pore opening diameter, whereas for cage-type ones, no clear trend is observed. A relative increase of intrusion pressure in comparison with water is particularly strong for the zeosils with narrow pore openings. The use of highly concentrated LiCl aqueous solutions instead of water can lead to a change of system behavior. This effect seems to be related to a lower formation of silanol defects under intrusion of solvated ions and a weaker interaction of the ions with silanol groups of zeosil framework. The influence of zeosil nanostructure on LiCl aqueous solutions intrusion-extrusion is also discussed.
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Affiliation(s)
- Giorgia Confalonieri
- Axe Matériaux à Porositées Contrôlées, Université de Haute Alsace (UHA), CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (G.C.); (H.N.)
- Université de Strasbourg, F-67081 Strasbourg, France
- Dipartimento di Scienze Chimiche e Geologiche (DSCG), Università di Modena e Reggio Emilia, 41125 Modena, Italy;
| | - T. Jean Daou
- Axe Matériaux à Porositées Contrôlées, Université de Haute Alsace (UHA), CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (G.C.); (H.N.)
- Université de Strasbourg, F-67081 Strasbourg, France
- Correspondence: (T.J.D.); (A.R.); Tel.: +33-389-33-67-39 (T.J.D.); +33-389-33-67-54 (A.R.)
| | - Habiba Nouali
- Axe Matériaux à Porositées Contrôlées, Université de Haute Alsace (UHA), CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (G.C.); (H.N.)
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Rossella Arletti
- Dipartimento di Scienze Chimiche e Geologiche (DSCG), Università di Modena e Reggio Emilia, 41125 Modena, Italy;
| | - Andrey Ryzhikov
- Axe Matériaux à Porositées Contrôlées, Université de Haute Alsace (UHA), CNRS, IS2M UMR 7361, F-68100 Mulhouse, France; (G.C.); (H.N.)
- Université de Strasbourg, F-67081 Strasbourg, France
- Correspondence: (T.J.D.); (A.R.); Tel.: +33-389-33-67-39 (T.J.D.); +33-389-33-67-54 (A.R.)
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