1
|
Kummamuru NB, Ciocarlan RG, Houlleberghs M, Martens J, Breynaert E, Verbruggen SW, Cool P, Perreault P. Surface modification of mesostructured cellular foam to enhance hydrogen storage in binary THF/H 2 clathrate hydrate. SUSTAINABLE ENERGY & FUELS 2024; 8:2824-2838. [PMID: 38933237 PMCID: PMC11197926 DOI: 10.1039/d4se00114a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/12/2024] [Indexed: 06/28/2024]
Abstract
This study introduces solid-state tuning of a mesostructured cellular foam (MCF) to enhance hydrogen (H2) storage in clathrate hydrates. Grafting of promoter-like molecules (e.g., tetrahydrofuran) at the internal surface of the MCF resulted in a substantial improvement in the kinetics of formation of binary H2-THF clathrate hydrate. Identification of the confined hydrate as sII clathrate hydrate and enclathration of H2 in its small cages was performed using XRD and high-pressure 1H NMR spectroscopy respectively. Experimental findings show that modified MCF materials exhibit a ∼1.3 times higher H2 storage capacity as compared to non-modified MCF under the same conditions (7 MPa, 265 K, 100% pore volume saturation with a 5.56 mol% THF solution). The enhancement in H2 storage is attributed to the hydrophobicity originating from grafting organic molecules onto pristine MCF, thereby influencing water interactions and fostering an environment conducive to H2 enclathration. Gas uptake curves indicate an optimal tuning point for higher H2 storage, favoring a lower density of carbon per nm2. Furthermore, a direct correlation emerges between higher driving forces and increased H2 storage capacity, culminating at 0.52 wt% (46.77 mmoles of H2 per mole of H2O and 39.78% water-to-hydrate conversions) at 262 K for the modified MCF material with fewer carbons per nm2. Notably, the substantial H2 storage capacity achieved without energy-intensive processes underscores solid-state tuning's potential for H2 storage in the synthesized hydrates. This study evaluated two distinct kinetic models to describe hydrate growth in MCF. The multistage kinetic model showed better predictive capabilities for experimental data and maintained a low average absolute deviation. This research provides valuable insights into augmenting H2 storage capabilities and holds promising implications for future advancements.
Collapse
Affiliation(s)
- Nithin B Kummamuru
- Sustainable Energy Air & Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp Groenenborgerlaan 171 2020 Antwerpen Belgium
- Laboratory for the Electrification of Chemical Processes and Hydrogen (ElectrifHy), University of Antwerp Olieweg 97 2020 Antwerp Belgium
| | - Radu-George Ciocarlan
- Department of Chemistry, University of Antwerp Universiteitsplein 1 2610 Wilrijk Belgium
| | - Maarten Houlleberghs
- KU Leuven, Centre for Surface Chemistry and Catalysis-Characterization and Application Team (COK-KAT) Celestijnenlaan 200F - Box 2461 Leuven 3001 Belgium
| | - Johan Martens
- KU Leuven, Centre for Surface Chemistry and Catalysis-Characterization and Application Team (COK-KAT) Celestijnenlaan 200F - Box 2461 Leuven 3001 Belgium
- NMR/X-Ray Platform for Convergence Research (NMRCoRe) Celestijnenlaan 200F - Box 2461 Leuven 3001 Belgium
| | - Eric Breynaert
- KU Leuven, Centre for Surface Chemistry and Catalysis-Characterization and Application Team (COK-KAT) Celestijnenlaan 200F - Box 2461 Leuven 3001 Belgium
- NMR/X-Ray Platform for Convergence Research (NMRCoRe) Celestijnenlaan 200F - Box 2461 Leuven 3001 Belgium
| | - Sammy W Verbruggen
- Sustainable Energy Air & Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp Groenenborgerlaan 171 2020 Antwerpen Belgium
- NANOlab Center of Excellence, University of Antwerp Groenenborgerlaan 171 2020 Antwerpen Belgium
| | - Pegie Cool
- Department of Chemistry, University of Antwerp Universiteitsplein 1 2610 Wilrijk Belgium
| | - Patrice Perreault
- Laboratory for the Electrification of Chemical Processes and Hydrogen (ElectrifHy), University of Antwerp Olieweg 97 2020 Antwerp Belgium
- University of Antwerp, BlueApp Olieweg 97 2020 Antwerpen Belgium
| |
Collapse
|
2
|
Yanes-Rodríguez R, Prosmiti R. Analysing the stability of He-filled hydrates: how many He atoms fit in the sII crystal? Phys Chem Chem Phys 2024; 26:2519-2528. [PMID: 38170811 DOI: 10.1039/d3cp05410a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Clathrate hydrates have the ability to encapsulate atoms and molecules within their cavities, and thus they could be potentially large storage capacity materials. The present work studies the multiple cage occupancy effects in the recently discovered He@sII crystal. On the basis of previous theoretical and experimental findings, the stability of He(1/1)@sII, He(1/4)@sII and He(2/4)@sII crystals was analysed in terms of structural, mechanical and energetic properties. For this purpose, first-principles DFT/DFT-D computations were performed by using both semi-local and non-local functionals, not only to elucidate which configuration is the most energetically favoured, but also to scrutinize the relevance of the long-range dispersion interactions in these kinds of compounds. We have encountered that dispersion interactions play a fundamental role in describing the underlying interactions, and different tendencies were observed depending on the choice of the functional. We found that PW86PBE-XDM shows the best performance, while the non-local functionals tested here were not able to correctly account for them. The present results reveal that the most stable configuration is the one presenting singly occupied D cages and tetrahedrally occupied H cages (He(1/4)@sII) in line with the experimental observation.
Collapse
Affiliation(s)
| | - Rita Prosmiti
- Institute of Fundamental Physics (IFF-CSIC), CSIC, Serrano 123, 28006 Madrid, Spain.
| |
Collapse
|
3
|
Special Issue “Analysis and Experimental Study on Natural Gas Hydrate Exploitation Processes”. Processes (Basel) 2023. [DOI: 10.3390/pr11030727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023] Open
Abstract
Gas hydrates are crystalline structures formed by water molecule cages hosting gas molecules [...]
Collapse
|
4
|
Tang Y, Ding LP, Dou XL, Shao P, Wei GD, Guo YJ, Zeng JH. Structures and Electronic and Hydrogen Storage Properties of Magnesium Scandium Hydrides. Inorg Chem 2022; 61:15569-15575. [PMID: 36122371 DOI: 10.1021/acs.inorgchem.2c02314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
MgH2 is well known as a potential hydrogen storage material. However, its high thermodynamic stability, high dissociation temperature, slow absorption, and desorption kinetics severely limit its application. Aiming at these shortcomings, we try to improve the hydrogen storage property of MgH2 by doping with transition metal Sc atoms. The structures and electronic and hydrogen storage properties of Mg-Sc-H systems have been systematically studied by combining the crystal structure analysis by particle swarm optimization and density functional theory method. The results show that the structure of MgScH8 with the R3 space group is the most stable one, which is proved to be a wide-band gap (2.96 eV) semiconductor. The possible decomposition pathways, which are crucial for the applicability of R3-MgScH8 as a hydrogen storage material, are studied, and the pathway of MgScH8 → ScH6 + Mg + H2 is found to be the most favorable one under 107.8 GPa pressure, while above 107.8 GPa, MgScH8 → Mg + Sc + 4H2 becomes the most thermodynamically stable pathway and releases the maximum amount of hydrogen. Based on the root mean square deviation calculation, it is found that R3-MgScH8 begins to melt at 400 K. The result of ab initio molecular dynamics simulations shows that the hydrogen release capacity (4.04 wt %) can be easily achieved at 500 K, thus making MgScH8 a potential hydrogen storage material.
Collapse
Affiliation(s)
- Yan Tang
- Department of Optoelectronic Science and Technology, School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Li-Ping Ding
- Department of Optoelectronic Science and Technology, School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xi-Long Dou
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Peng Shao
- Department of Physics, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Guo-Dong Wei
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi, P. R. China
| | - Yi-Jin Guo
- Department of Optoelectronic Science and Technology, School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Jia-Hao Zeng
- Department of Optoelectronic Science and Technology, School of Electronic Information and Artificial Intelligence, Shaanxi University of Science and Technology, Xi'an 710021, China
| |
Collapse
|
5
|
Yanes-Rodríguez R, Cabrera-Ramírez A, Prosmiti R. Delving into guest-free and He-filled sI and sII clathrate hydrates: a first-principles computational study. Phys Chem Chem Phys 2022; 24:13119-13129. [PMID: 35587105 DOI: 10.1039/d2cp00701k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dynamics of the formation of a specific clathrate hydrate as well as its thermodynamic transitions depend on the interactions between the trapped molecules and the host water lattice. The molecular-level understanding of the different underlying processes benefits not only the description of the properties of the system, but also allows the development of multiple technological applications such as gas storage, gas separation, energy transport, etc. In this work we investigate the stability of periodic crystalline structures, such as He@sI and He@sII clathrate hydrates by first-principles computations. We consider such host water networks interacting with a guest He atom using selected density functional theory approaches, in order to explore the effects on the encapsulation of a light atom in the sI/sII crystals, by deriving all energy components (guest-water, water-water, guest-guest). Structural properties and energies were first computed by structural relaxations of the He-filled and empty sI/sII unit cells, yielding lattice and compressibility parameters comparable to experimental and theoretical values available for those hydrates. According to the results obtained, the He enclathration in the sI/sII unit cells is a stabilizing process, and both He@sI and He@sII clathrates, considering single cage occupancy, are predicted to be stable whatever the XDM or D4 dispersion correction applied. Our results further reveal that despite the weak underlying interactions the He encapsulation has a rather notable effect on both lattice parameters and energetics, with the He@sII being the most energetically favorable in accord with recent experimental observations.
Collapse
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
| | - Adriana Cabrera-Ramírez
- 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.
| |
Collapse
|
6
|
Wei S, Liu S, Cao S, Zhou S, Chen Y, Wang Z, Lu X. Theoretical Investigation of the Fusion Process of Mono-Cages to Tri-Cages with CH 4/C 2H 6 Guest Molecules in sI Hydrates. Molecules 2021; 26:7071. [PMID: 34885652 PMCID: PMC8659103 DOI: 10.3390/molecules26237071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/17/2021] [Accepted: 11/19/2021] [Indexed: 11/24/2022] Open
Abstract
Owing to a stable and porous cage structure, natural gas hydrates can store abundant methane and serve as a potentially natural gas resource. However, the microscopic mechanism of how hydrate crystalline grows has not been fully explored, especially for the structure containing different guest molecules. Hence, we adopt density functional theory (DFT) to investigate the fusion process of structure I hydrates with CH4/C2H6 guest molecules from mono-cages to triple-cages. We find that the volume of guest molecules affects the stabilities of large (51262, L) and small (512, s) cages, which are prone to capture C2H6 and CH4, respectively. Mixed double cages (small cage and large cage) with the mixed guest molecules have the highest stability and fusion energy. The triangular triple cages exhibit superior stability because of the three shared faces, and the triangular mixed triple cages (large-small-large) structure with the mixed guest molecules shows the highest stability and fusion energy in the triple-cage fusion process. These results can provide theoretical insights into the growth mechanism of hydrates with other mono/mixed guest molecules for further development and application of these substances.
Collapse
Affiliation(s)
- Shuxian Wei
- School of Science, China University of Petroleum, Qingdao 266580, China;
| | - Siyuan Liu
- School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, China; (S.C.); (S.Z.); (Z.W.)
| | - Shoufu Cao
- School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, China; (S.C.); (S.Z.); (Z.W.)
| | - Sainan Zhou
- School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, China; (S.C.); (S.Z.); (Z.W.)
| | - Yong Chen
- School of Geosciences, China University of Petroleum, Qingdao 266580, China
| | - Zhaojie Wang
- School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, China; (S.C.); (S.Z.); (Z.W.)
| | - Xiaoqing Lu
- School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, China; (S.C.); (S.Z.); (Z.W.)
| |
Collapse
|
7
|
Krishnan Y, Ghaani MR, English NJ. Hydrogen and Deuterium Molecular Escape from Clathrate Hydrates: "Leaky" Microsecond-Molecular-Dynamics Predictions. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:8430-8439. [PMID: 34276853 PMCID: PMC8279647 DOI: 10.1021/acs.jpcc.1c00987] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/25/2021] [Indexed: 06/13/2023]
Abstract
It is predicted herewith that the leakage of both hydrogen (H2) and deuterium (D2) from sII clathrate hydrates, borne of guest chemical-potential equalization driving enhanced nonequilibrium intercage hopping, should be observable experimentally. To this end, we have designed simulations to realize and study this process by microsecond molecular dynamics within the temperature range of 150-180 K-for which the hydrate lattice was found to be stable. In this pursuit, we considered initial large-cage (51264) guest occupancies of 1-4, with single occupation of 512 cavities. Examining transient, nonequilibrium intercage hopping, we present a lattice-escape activation energy for the four nominal large-cage occupancies (1-4), by fitting to the hydrate-leakage rate. The intercage hopping of H2 and D2 was studied using Markov-chain models and expressed at different temperatures and large-cage occupancies. The free energy of guest "binding" in the large and small cages was also computed for all of the occupancies. Toward equilibrium, following the majority of H2/D2 escape via leakage, the percentage of occupancies was calculated for both H2 and D2 for all of the systems for all initial nominal large-cage occupancies; here, not unexpectedly, double occupancies occurred more favorably in large cages and single occupancies dominated in small cages.
Collapse
Affiliation(s)
- Yogeshwaran Krishnan
- School of Chemical and Bioprocess
Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Mohammad Reza Ghaani
- School of Chemical and Bioprocess
Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Niall J. English
- School of Chemical and Bioprocess
Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
8
|
Hydrogen Inter-Cage Hopping and Cage Occupancies inside Hydrogen Hydrate: Molecular-Dynamics Analysis. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app11010282] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The inter-cage hopping in a type II clathrate hydrate with different numbers of H2 and D2 molecules, from 1 to 4 molecules per large cage, was studied using a classical molecular dynamics simulation at temperatures of 80 to 240 K. We present the results for the diffusion of these guest molecules (H2 or D2) at all of the different occupations and temperatures, and we also calculated the activation energy as the energy barrier for the diffusion using the Arrhenius equation. The average occupancy number over the simulation time showed that the structures with double and triple large-cage H2 occupancy appeared to be the most stable, while the small cages remained with only one guest molecule. A Markov model was also calculated based on the number of transitions between the different cage types.
Collapse
|
9
|
Water Salinity as Potential Aid for Improving the Carbon Dioxide Replacement Process’ Effectiveness in Natural Gas Hydrate Reservoirs. Processes (Basel) 2020. [DOI: 10.3390/pr8101298] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Natural gas hydrates represent a valid opportunity to counteract two of the most serious issues that are affecting humanity this century: climate change and the need for new energy sources, due to the fast and constant increase in the population worldwide. The energy that might be produced with methane contained in hydrates is greater than any amount of energy producible with known conventional energy sources; being widespread in all oceans, they would greatly reduce problems and conflicts associated with the monopoly of energy sources. The possibility of extracting methane and simultaneously performing the permanent storage of carbon dioxide makes hydrate an almost carbon-neutral energy source. The main topic of scientific research is to improve the recovery of technologies and guest species replacement strategies in order to make the use of gas hydrates economically advantageous. In the present paper, an experimental study on how salt can alter the formation process of both methane and carbon dioxide hydrate was carried out. The pressure–temperature conditions existing between the two respective equilibrium curves are directly proportional to the effectiveness of the replacement process and thus its feasibility. Eighteen formation tests were realized at three different salinity values: 0, 30 and 37 g/L. Results show that, as the salinity degree increases, the space between CO2 and CH4 formation curves grows. A further aspect highlighted by the tests is how the carbon dioxide formation process tends to assume a very similar trend in all experiments, while curves obtained during methane tests show a similar trend but with some significant differences. Moreover, this tendency became more pronounced with the increase in the salinity degree.
Collapse
|