1
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Oh H, Tumanov N, Ban V, Li X, Richter B, Hudson MR, Brown CM, Iles GN, Wallacher D, Jorgensen SW, Daemen L, Balderas-Xicohténcatl R, Cheng Y, Ramirez-Cuesta AJ, Heere M, Posada-Pérez S, Hautier G, Hirscher M, Jensen TR, Filinchuk Y. Small-pore hydridic frameworks store densely packed hydrogen. Nat Chem 2024; 16:809-816. [PMID: 38321236 PMCID: PMC11087247 DOI: 10.1038/s41557-024-01443-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/08/2024] [Indexed: 02/08/2024]
Abstract
Nanoporous materials have attracted great attention for gas storage, but achieving high volumetric storage capacity remains a challenge. Here, by using neutron powder diffraction, volumetric gas adsorption, inelastic neutron scattering and first-principles calculations, we investigate a magnesium borohydride framework that has small pores and a partially negatively charged non-flat interior for hydrogen and nitrogen uptake. Hydrogen and nitrogen occupy distinctly different adsorption sites in the pores, with very different limiting capacities of 2.33 H2 and 0.66 N2 per Mg(BH4)2. Molecular hydrogen is packed extremely densely, with about twice the density of liquid hydrogen (144 g H2 per litre of pore volume). We found a penta-dihydrogen cluster where H2 molecules in one position have rotational freedom, whereas H2 molecules in another position have a well-defined orientation and a directional interaction with the framework. This study reveals that densely packed hydrogen can be stabilized in small-pore materials at ambient pressures.
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Affiliation(s)
- Hyunchul Oh
- Department of Chemistry, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
- Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Nikolay Tumanov
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Voraksmy Ban
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Xiao Li
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Bo Richter
- Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - Matthew R Hudson
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Craig M Brown
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Gail N Iles
- Department of Crystallography, Helmholtz-Zentrum Berlin, Berlin, Germany
- School of Science, RMIT University, Melbourne, Victoria, Australia
| | - Dirk Wallacher
- Department of Crystallography, Helmholtz-Zentrum Berlin, Berlin, Germany
| | - Scott W Jorgensen
- Chemical and Environmental Sciences Lab, General Motors R&D Center, Warren, MI, USA
- Hyrax intercontinental, Bloomfield, MI, USA
| | - Luke Daemen
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - Yongqiang Cheng
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - Michael Heere
- Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen and Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Garching, Germany
- Technische Universität Braunschweig, Institute of Internal Combustion Engines, Braunschweig, Germany
| | - Sergio Posada-Pérez
- Institut de Química Computacional i Catàlisi, Departament de Química, Universitat de Girona, Girona, Catalonia, Spain
| | - Geoffroy Hautier
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
- Thayer School of Engineering, Dartmouth College, Hanover, NH, USA
| | - Michael Hirscher
- Max Planck Institute for Intelligent Systems, Stuttgart, Germany.
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, Japan.
| | - Torben R Jensen
- Department of Chemistry and Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark.
| | - Yaroslav Filinchuk
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium.
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2
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Algaba J, Blazquez S, Míguez JM, Conde MM, Blas FJ. Three-phase equilibria of hydrates from computer simulation. III. Effect of dispersive interactions in the methane and carbon dioxide hydrates. J Chem Phys 2024; 160:164723. [PMID: 38686999 DOI: 10.1063/5.0201309] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/02/2024] [Indexed: 05/02/2024] Open
Abstract
In this work, the effect of the range of dispersive interactions in determining the three-phase coexistence line of the CO2 and CH4 hydrates has been studied. In particular, the temperature (T3) at which solid hydrate, water, and liquid CO2/gas CH4 coexist has been determined through molecular dynamics simulations using different cutoff values (from 0.9 to 1.6 nm) for dispersive interactions. The T3 of both hydrates has been determined using the direct coexistence simulation technique. Following this method, the three phases in equilibrium are put together in the same simulation box, the pressure is fixed, and simulations are performed at different temperatures T. If the hydrate melts, then T > T3. Conversely, if the hydrate grows, then T < T3. The effect of the cutoff distance on the dissociation temperature has been analyzed at three different pressures for CO2 hydrate: 100, 400, and 1000 bar. Then, we have changed the guest and studied the effect of the cutoff distance on the dissociation temperature of the CH4 hydrate at 400 bar. Moreover, the effect of long-range corrections for dispersive interactions has been analyzed by running simulations with homo- and inhomogeneous corrections and a cutoff value of 0.9 nm. The results obtained in this work highlight that the cutoff distance for the dispersive interactions affects the stability conditions of these hydrates. This effect is enhanced when the pressure is decreased, displacing the T3 about 2-4 K depending on the system and the pressure.
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Affiliation(s)
- J Algaba
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, 21006 Huelva, Spain
| | - S Blazquez
- Dpto. Química Física I, Fac. Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - J M Míguez
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, 21006 Huelva, Spain
| | - M M Conde
- Departamento de Ingeniería Química Industrial y del Medio Ambiente, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, 28006 Madrid, Spain
| | - F J Blas
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, 21006 Huelva, Spain
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3
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Sedminek A, Likozar B, Gyergyek S. Electrification of Selective Catalytic Liquid Organic Hydrogen Carriers: Hydrogenation and Dehydrogenation Reactions. ACS OMEGA 2024; 9:6027-6035. [PMID: 38371759 PMCID: PMC10870301 DOI: 10.1021/acsomega.3c06738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/22/2023] [Accepted: 01/04/2024] [Indexed: 02/20/2024]
Abstract
The development of efficient, chemical hydrogen-storage materials is one of the greatest technical challenges for the coming hydrogen-based economy. Analyzed liquid organic hydrogen carriers (LOHCs), which bond, store, and release the H2 molecules through catalytic hydrogenation, cracking, and dehydrogenation cycles, are being considered as an alternative, functional option. The search for a highly industrialized reactive production process, coupled with the use of renewable electrical energy, has encouraged the consideration of characteristic stand-alone methods (such as microwave-assisted surface reactions, an increase in the rates by magnetic heating systems, electrocatalysis, variable photochemical manufacturing, and plasma). This mini review aims to highlight, assess, and critically evaluate these recent advances in the electrification of LOHC-related plant technologies. Besides base storing vectors, such as methanol, formaldehyde, and formic acid derivatives, reversible cycling compounds, i.e., benzene, toluene, polycyclic dibenzyl toluene (DBT), carbazole, and indole, are given an overview. These all compete with, for example, ammonia. Specific design methodologies, such as density functional theory (DFT), kinetics, mass-transfer phenomena, etc., are discussed, whether these were studied or the subject of modeling. Lastly, quantitative structure-performance relationships are correlated for activity, selectivity, and stability, where the latter was possible.
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Affiliation(s)
- Anja Sedminek
- Department
for Material Synthesis, Jožef Stefan
Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Maribor, Smetanova
17, 2000 Maribor, Slovenia
| | - Blaž Likozar
- Faculty
of Chemistry and Chemical Engineering, University
of Maribor, Smetanova
17, 2000 Maribor, Slovenia
- Department
for Catalysis in Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Sašo Gyergyek
- Department
for Material Synthesis, Jožef Stefan
Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Faculty
of Chemistry and Chemical Engineering, University
of Maribor, Smetanova
17, 2000 Maribor, Slovenia
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4
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Zhang Q, Fang C, Wang Y, Liu X. Selective and efficient H 2 evolution upon NH 3BH 3 hydrolysis at subzero temperatures. iScience 2024; 27:108774. [PMID: 38261948 PMCID: PMC10797192 DOI: 10.1016/j.isci.2023.108774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/05/2023] [Accepted: 12/20/2023] [Indexed: 01/25/2024] Open
Abstract
In the winter months, the temperature in most of the Earth stays below 0°C; the average temperature in winter at the South Pole is about -60°C. Therefore, it is urgent to develop efficient catalytic systems for selective and efficient H2 evolution upon NH3BH3 hydrolysis at subzero temperatures. For solving the freezing issue of water at below 0°C, herein, we have employed a facile and surfactant-free approach to synthesize M-Pt/C nanocomposites (M = Pd, Rh, Ru, Ni, Cu, or Fe), by the alloying of commercial Pt/C with Pd, Rh, Ru, Cu, Ni, or Fe for selective and efficient H2 evolution upon NH3BH3 hydrolysis in saline solution at below 0°C, even at -15°C. In addition, NH3BH3 hydrolysis over Pd-Pt/C in the saturated NaCl solution is utilized not only for safe hydrogen production but also for its in situ hydrogenation reduction in organic chemistry, which could avoid using dangerous hydrogen cylinders.
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Affiliation(s)
- Qing Zhang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P.R. China
| | - Chen Fang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P.R. China
| | - Yanlan Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Nevel Cell Technology, Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xiang Liu
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, P.R. China
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5
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Gupta P, Toksha B, Rahaman M. A Critical Review on Hydrogen Based Fuel Cell Technology and Applications. CHEM REC 2024; 24:e202300295. [PMID: 37772671 DOI: 10.1002/tcr.202300295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/19/2023] [Indexed: 09/30/2023]
Abstract
The research in energy storage and conversion is playing a critical role in energy policy as the innovation and technological progress are essential for achieving the energy transition and climate neutrality goals. Hydrogen Fuel Cell technology is considered a strategic element in the pursuit of sustainable and clean energy solutions. This technology is increasingly gaining attention in recent years as a potential substitute to conventional non-renewable energy sources. Fuel cell technology can be employed for domestic/commercial use along with powering the transportation sector which currently employs the use of conventional battery systems. However, these systems pose severe limitations with respect to longer charging times and limited distance range. This review article aims at providing a comprehensive methodical overview of hydrogen-based fuel cell technology along with key concepts, present day scenarios, including overview of the market and industry trends, government policies and initiatives, along with major stakeholders involved in scaling up the technology for mass consumption. The outlook of fuel cells, including their capability to revolutionise the energy sector is discussed. The technological advancements and breakthroughs on the horizon along with the challenges and safety concerns related to the widespread acceptance of fuel cells are analysed.
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Affiliation(s)
- Prashant Gupta
- MIT - Centre for Advanced Materials Research and Technology, Department of Plastic and Polymer Engineering, Maharashtra Institute of Technology, Aurangabad, 431010, India
| | - Bhagwan Toksha
- MIT - Centre for Advanced Materials Research and Technology, Department of Electronics and Telecommunication Engineering, Maharashtra Institute of Technology, Aurangabad, 431010, India
| | - Mostafizur Rahaman
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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6
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Li K, Chen B, Li M, Jiang L, Song Y, Yang M. Facilitation of Hydrate Dissociation and Structural Evolution by Major Marine Anions under Static Electric Fields. J Phys Chem B 2023; 127:10447-10457. [PMID: 37991934 DOI: 10.1021/acs.jpcb.3c06012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Electric fields have been proven to be capable of significantly affecting the equilibrium state of hydrates. In this study, the thermodynamic properties and structural changes of methane hydrate (MH) in various anion solutions in an electric field at 0.7 V/nm were investigated by molecular dynamics simulations. The presence of anions significantly enhances the instability of methane hydrates under electric fields, leading to a staged dissociation process. First, the anions coexist with MH to form a temporary metastable structure under the action of an electric field. Then, the migration of anions causes the dissociation of nearby hydrates and the formation of flow channels in the hydrate layer, which leads to the complete dissociation of MH after a period. The promotive effects of F-, Br-, I-, and Cl- ions were close, while SO42- was relatively weak. The anions are still in hydration shells in the MH phase, but the structure of the hydration shells differs slightly from that in solution (the coordination numbers of I- and SO42- ions increased). The migration resistances of multiple anions to cross the surface of the hydrate layer are similar. However, inside the hydrate phase, the anions with a larger radius have a higher migration resistance. It is difficult for SO42- ions to migrate inside the hydrate phase, and they tend to form a metastable structure on the hydrate surface. Combining our previous studies, SrCl2 solution has the best hydrate promotion under an electric field environment.
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Affiliation(s)
- Kehan Li
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
| | - Bingbing Chen
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
| | - Mingjun Li
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
| | - Lanlan Jiang
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
| | - Yongchen Song
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
| | - Mingjun Yang
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
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7
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Jafari Daghalian Sofla S, Servio P, Rey AD. Atomistic-geometry inspired structure-composition-property relations of hydrogen sII hydrates. Sci Rep 2023; 13:19675. [PMID: 37951989 PMCID: PMC10640630 DOI: 10.1038/s41598-023-46716-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/03/2023] [Indexed: 11/14/2023] Open
Abstract
Gas hydrates are crystalline inclusion compounds formed by trapping gas molecules inside water cages at high pressures and low temperatures. Hydrates are promising materials for hydrogen storage, but their potential depends on understanding their mechanical properties. This work integrates density functional theory (DFT) simulations with a geometry-inspired composite material model to explore the bulk moduli of structure II hydrogen hydrates subjected to pressure loads of - 0.2 to 3 GPa, representative of the hydrogen hydrate formation conditions. Our findings reveal that structure II hydrate comprises a bi-continuous composite of small and large cages with nearly equal volume fractions. The bulk modulus increases with rising pressure but decreases with increasing composition. Notably, these results align closely with the ideal laws of mixtures, especially at low pressures and compositions, where cage interactions are minimal. This integrated DFT-laws of mixtures methodology provides a key database for fast estimation of hydrate mechanical properties without costly computations.
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Affiliation(s)
| | - Phillip Servio
- Department of Chemical Engineering, McGill University, Montreal, QC, H3A 0C5, Canada
| | - Alejandro D Rey
- Department of Chemical Engineering, McGill University, Montreal, QC, H3A 0C5, Canada.
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8
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Hao TT, Yang YQ, Sun YY, Suen NT. A step-by-step strategy to design active and stable quaternary intermetallic compounds for the hydrogen evolution reaction. Chem Commun (Camb) 2023; 59:10781-10784. [PMID: 37593789 DOI: 10.1039/d3cc02606j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Multinary intermetallic compounds with rich chemical compositions enable one to achieve a logical design for desired materials based on the required function. In this work, we have demonstrated a step-by-step strategy to design a quaternary intermetallic compound that exhibits highly active and stable performance for the hydrogen evolution reaction (HER). With binary intermetallic TaCo2 as the starting point, the minor inclusion of a ductile Cu element in TaCo2 to form ternary TaCu0.25Co1.75 can substantially lower the degradation rate from ca. 20% to 5% after sintering treatment (i.e., enhance connectivity between particles). However, the overpotential at a current density of 10 mA cm-2 (η10) increases by ca. 20 mV from TaCo2 to TaCu0.25Co1.75. Further incorporation of a HER active Ru element to cast quaternary TaCu0.125Ru0.125Co1.75 can decrease ca. 70 mV of η10 while maintaining long-term stability. This proves that one can design functional intermetallic compounds intentionally, which may be extended to different fields of application.
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Affiliation(s)
- Tong-Tong Hao
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yu-Qing Yang
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yuan-Yuan Sun
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Nian-Tzu Suen
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
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9
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Adibifard M, Olorode O. Large-Scale Nonequilibrium Molecular Studies of Thermal Hydrate Dissociation. J Phys Chem B 2023; 127:6543-6550. [PMID: 37462521 PMCID: PMC11008782 DOI: 10.1021/acs.jpcb.3c03391] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/24/2023] [Indexed: 07/28/2023]
Abstract
The energy content of methane hydrate reservoirs (MHRs) is at least twice that of conventional fossil fuels. So, there is considerable interest in their commercial development by heating, among other dissociation mechanisms. However, a few researchers have highlighted the potentially uncontrollable release of methane from MHRs, which could occur because of global warming. Therefore, it is crucial to understand the kinetics of thermal hydrate dissociation to safely develop these resources and prevent the release of this greenhouse gas into the environment. Although there have been several molecular studies of thermal dissociation, most of these use small simulation domains that cannot capture the transient nature of the process. To address this limitation, we performed coarse-grained molecular dynamics (CGMD) simulations on a significantly larger domain with a hundred times more hydrate unit cells than those used in previous studies. We monitored the kinetics of dissociation using an image-processing algorithm and observed the dynamics of the process while maintaining a thermal gradient at the dissociation front. For the first time, we report the formation of an unstable secondary dissociation path that triggers gas bubbles within the solid hydrate. The kinetics of thermal dissociation appears to occur in three stages. In the first stage, the energy of the system increases until it exceeds the activation energy, and dissociation is initiated. Consistent dissociation occurs in the second stage, whereas the third stage involves the dissociation of the remaining hydrates across a nonplanar and heterogeneous interface.
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Affiliation(s)
- Meisam Adibifard
- Department
of Petroleum Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
| | - Olufemi Olorode
- Department
of Petroleum Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
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10
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Yanes-Rodríguez R, Prosmiti R. Computational investigations of stable multiple-cage-occupancy He clathrate-like hydrostructures. Phys Chem Chem Phys 2023. [PMID: 37314248 DOI: 10.1039/d3cp00603d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
One of the several possibilities offered by the interesting clathrate hydrates is the opportunity to encapsulate several atoms or molecules, in such a way that more efficient storage materials could be explored or new molecules that otherwise do not exist could be created. These types of applications are receiving growing attention from technologists and chemists, given the future positive implications that they entail. In this context, we investigated the multiple cage occupancy of helium clathrate hydrates, to establish stable novel hydrate structures or ones similar to those predicted previously by experimental and theoretical studies. To this purpose, we analyzed the feasibility of including an increased number of He atoms inside the small (D) and large (H) cages of the sII structure through first-principles properly assessed density functional approaches. On the one hand, we have computed energetic and structural properties, in which we examined the guest-host and guest-guest interactions in both individual and two-adjacent clathrate-like sII cages by means of binding and evaporation energies. On the other hand, we have carried out a thermodynamical analysis on the stability of such He-containing hydrostructures in terms of changes in enthalpy, ΔH, Gibbs free energy, ΔG, and entropy, ΔS, during their formation process at various temperature and pressure values. In this way, we have been able to make a comparison with experiments, reaffirming the ability of computational DFT approaches to describe such weak guest-host interactions. In principle, the most stable structure involves the encapsulation of one and four He atoms inside the D and H sII cages, respectively; however, more He atoms could be entrapped under lower temperature and/or higher pressure thermodynamic conditions. We foresee such accurate computational quantum chemistry approaches contributing to the current emerging machine-learning model development.
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Affiliation(s)
- Raquel Yanes-Rodríguez
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.
- Doctoral Programme in Theoretical Chemistry and Computational Modelling, Doctoral School, Universidad Autónoma de Madrid, Spain
| | - Rita Prosmiti
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.
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11
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Cao J, Huang W, Wang Y, Zhang Q, Liu X. Dehydrogenation of N2H4·H2O over NiMoO4 Nanorods-Stabilized NiPt Bimetal Nanoparticles for On-demand H2 Evolution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120917] [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]
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12
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Rapid and efficient hydrogen clathrate hydrate formation in confined nanospace. Nat Commun 2022; 13:5953. [PMID: 36216832 PMCID: PMC9550858 DOI: 10.1038/s41467-022-33674-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/28/2022] [Indexed: 11/08/2022] Open
Abstract
Clathrate hydrates are crystalline solids characterized by their ability to accommodate large quantities of guest molecules. Although CH4 and CO2 are the traditional guests found in natural systems, incorporating smaller molecules (e.g., H2) is challenging due to the need to apply higher pressures to stabilize the hydrogen-bonded network. Another critical limitation of hydrates is the slow nucleation and growth kinetics. Here, we show that specially designed activated carbon materials can surpass these obstacles by acting as nanoreactors promoting the nucleation and growth of H2 hydrates. The confinement effects in the inner cavities promote the massive growth of hydrogen hydrates at moderate temperatures, using pure water, with extremely fast kinetics and much lower pressures than the bulk system.
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13
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Rasoolzadeh A, Mehrabi K, Bakhtyari A, Javanmardi J, Nasrifar K, Mohammadi AH. Clathrate hydrates stability conditions in the presence of aqueous solutions of environmentally friendly sugar-derived compounds: A precise thermodynamic approach. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117862] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Dual Functionality of Ultralow Levels of a Model Kinetic Hydrate Inhibitor on Hydrate Particle Morphology and Interparticle Force. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Usman M. Recent Progress of SAPO-34 Zeolite Membranes for CO2 Separation: A Review. MEMBRANES 2022; 12:membranes12050507. [PMID: 35629833 PMCID: PMC9147644 DOI: 10.3390/membranes12050507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/23/2022] [Accepted: 04/28/2022] [Indexed: 02/06/2023]
Abstract
In the zeolite family, the silicoaluminophosphate (SAPO)-34 zeolite has a unique chemical structure, distinctive pore size, adsorption characteristics, as well as chemical and thermal stability, and recently, has attracted much research attention. Increasing global carbon dioxide (CO2) emissions pose a serious environmental threat to humans, animals, plants, and the entire environment. This mini-review summarizes the role of SAPO-34 zeolite membranes, including mixed matrix membranes (MMMs) and pure SAPO-34 membranes in CO2 separation. Specifically, this paper summarizes significant developments in SAPO-34 membranes for CO2 removal from air and natural gas. Consideration is given to a variety of successes in SAPO-34 membranes, and future ideas are described in detail to foresee how SAPO-34 could be employed to mitigate greenhouse gas emissions. We hope that this study will serve as a detailed guide to the use of SAPO-34 membranes in industrial CO2 separation.
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Affiliation(s)
- Muhammad Usman
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia
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Lee J, Park CY, Kong CI, Lee JH, Moon SY. Ultrathin Water-Cast Polymer Membranes for Hydrogen Purification. ACS APPLIED MATERIALS & INTERFACES 2022; 14:7292-7300. [PMID: 35084818 DOI: 10.1021/acsami.1c21780] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Among various H2 purification technologies, the use of membrane technology has been considered an ecofriendly approach for addressing the increasing hydrogen demand. Although many H2-selective membrane materials have been reported, processing them into hollow fibers or thin-film composites (TFCs) via traditional methods either affects the performance of the materials or renders their further processing into applicable membrane forms infeasible. Herein, we propose a water-casting method for fabricating TFC membranes for hydrogen purification with high permselectivity. The film integrity and thickness were manipulated by controlling the spreadability of the casting solution, and the resultant water-cast TFC membrane that comprised an ∼30 nm selective layer demonstrated high H2 permeance and H2/CH4 selectivity of approximately 190 GPU and 100, respectively, under optimized conditions. We performed a mixed-gas permeation test using a simulated off-gas of steam-methane reforming from natural gas in a single-stage system and obtained hydrogen gas of >99 mol % purity. This indicates not only the suitability of the water-cast membranes for satisfying the demand for pure hydrogen as a fuel and chemical reagent but also the great potential of the water-casting method for high-performance membranes in various industrial and environmental applications.
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Affiliation(s)
- Jongmyeong Lee
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
| | - Chae-Young Park
- R&D Center for Advanced Pharmaceuticals & Evaluation, Korea Institute of Toxicology, Daejeon 34114, Korea
| | - Chang-In Kong
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
| | - Jae-Hyeok Lee
- R&D Center for Advanced Pharmaceuticals & Evaluation, Korea Institute of Toxicology, Daejeon 34114, Korea
| | - Su-Young Moon
- C1 Gas & Carbon Convergent Research Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
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Park KH, Kim DH, Cha M. Spectroscopic identifications of structure II hydrate with new large alcohol guest molecule (Cyclopentanemethanol). Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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