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Blazquez S, Algaba J, Míguez JM, Vega C, Blas FJ, Conde MM. Three-phase equilibria of hydrates from computer simulation. I. Finite-size effects in the methane hydrate. J Chem Phys 2024; 160:164721. [PMID: 38686998 DOI: 10.1063/5.0201295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/01/2024] [Indexed: 05/02/2024] Open
Abstract
Clathrate hydrates are vital in energy research and environmental applications. Understanding their stability is crucial for harnessing their potential. In this work, we employ direct coexistence simulations to study finite-size effects in the determination of the three-phase equilibrium temperature (T3) for methane hydrates. Two popular water models, TIP4P/Ice and TIP4P/2005, are employed, exploring various system sizes by varying the number of molecules in the hydrate, liquid, and gas phases. The results reveal that finite-size effects play a crucial role in determining T3. The study includes nine configurations with varying system sizes, demonstrating that smaller systems, particularly those leading to stoichiometric conditions and bubble formation, may yield inaccurate T3 values. The emergence of methane bubbles within the liquid phase, observed in smaller configurations, significantly influences the behavior of the system and can lead to erroneous temperature estimations. Our findings reveal finite-size effects on the calculation of T3 by direct coexistence simulations and clarify the system size convergence for both models, shedding light on discrepancies found in the literature. The results contribute to a deeper understanding of the phase equilibrium of gas hydrates and offer valuable information for future research in this field.
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Affiliation(s)
- S Blazquez
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - 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
| | - 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
| | - C Vega
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 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
| | - 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
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2
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Naderlou S, Vahedpour M, Franz DM. Multi-scale computational investigation of Ag-doped two-dimensional Zn-based MOFs for storage and release of small NO and CO bioactive molecules. Phys Chem Chem Phys 2023; 25:2830-2845. [PMID: 36607736 DOI: 10.1039/d2cp04725j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Nitric oxide (NO) and carbon monoxide (CO) are two important gasotransmitters with critical biological roles in the human body. Due to their short lifetime and dangerous side effects at high concentrations, it is essential to find safe storage and slow release methods of these two gases. Herein, we report the multi-scale simulations of two-dimensional (Zn)MOF-470 doped with antimicrobial Ag atoms to evaluate the degree of enhancement of adsorption and dynamics of NO and CO. The results show that NO binds to Ag stronger than CO. In addition, the decoration of the benzene ring with Ag atoms on both sides has led to the effective adsorption of NO and CO with binding energies of -26.34 and -21.71 kcal mol-1, respectively. The GCMC results show that Ag can significantly improve NO and CO storage capacity, especially in low-pressure ranges. The storage capacity of NO in (Zn)MOF-470 and Ag-doped MOFs is 6.12 and 7.21 mol kg-1, respectively. This storage capacity for CO is 4.09 and 5.48 mol kg-1, respectively. The heat of adsorption for NO and CO was obtained to be 31.72 and 25.64 kJ mol-1 for (Zn)MOF-470, and 36.5 and 31.12 kJ mol-1 for Ag-(Zn)MOF-470 at 298 K and 1 bar. Besides, the MD results indicate that when Ag is doped into the structure of MOFs, the dynamics of gases within the pores of MOFs significantly decrease. When Ag atoms are considered mobile, the dynamics of guest molecules increase and it shows that the structural and dynamical behavior of NO and CO strongly depends on the mobility or immobility of doped Ag atoms. The result from the MSD directions (x, y, and z components) indicates that the diffusion of NO and CO within the pores of (Zn)MOF-470 is anisotropic and this may be due to the 2D structural characteristics of the MOF, the dipolar nature of NO and CO molecules, and the very narrow and layered pores of (Zn)MOF-470. These promising results from the simulations suggest that (Zn)MOF-470 and doping Ag atoms into this MOF can improve the storage capacity and slow release of bioactive NO and CO along with utilization of the antimicrobial nature of Ag atoms in medical applications.
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Affiliation(s)
- Shabnam Naderlou
- Department of Chemistry, University of Zanjan (ZNU), P.O. Box 38791-45371, Zanjan, Iran.
| | - Morteza Vahedpour
- Department of Chemistry, University of Zanjan (ZNU), P.O. Box 38791-45371, Zanjan, Iran.
| | - Douglas M Franz
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, CHE205, Tempa, FL 33620-5250, USA
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Michalis VK, Economou IG, Stubos AK, Tsimpanogiannis IN. Phase equilibria molecular simulations of hydrogen hydrates via the direct phase coexistence approach. J Chem Phys 2022; 157:154501. [PMID: 36272800 DOI: 10.1063/5.0108738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report the three-phase (hydrate-liquid water-vapor) equilibrium conditions of the hydrogen-water binary system calculated with molecular dynamics simulations via the direct phase coexistence approach. A significant improvement of ∼10.5 K is obtained in the current study, over earlier simulation attempts, by using a combination of modifications related to the hydrogen model that include (i) hydrogen Lennard-Jones parameters that are a function of temperature and (ii) the water-guest energy interaction parameters optimized further by using the Lorentz-Berthelot combining rules, based on an improved description of the solubility of hydrogen in water.
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Affiliation(s)
| | - Ioannis G Economou
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - Athanasios K Stubos
- Environmental Research Laboratory, National Center for Scientific Research "Demokritos," 15310 Aghia Paraskevi Attikis, Greece
| | - Ioannis N Tsimpanogiannis
- Chemical Process and Energy Resources Institute (CPERI), Centre for Research & Technology Hellas (CERTH), 57001 Thermi-Thessaloniki, Greece
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4
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Molecular insights into the heterogeneous crystal growth of tetrahydrofuran hydrate: Kinetic and interfacial properties. J Mol Graph Model 2022; 115:108205. [DOI: 10.1016/j.jmgm.2022.108205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/17/2022] [Accepted: 04/23/2022] [Indexed: 11/22/2022]
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Ghafari H, Mohammadi-Manesh H. How Does the Guest—Host Hydrogen Bonding Affect the Thermal Properties of Clathrate Hydrates? J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620030038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ghafari H, Mohammadi-Manesh H. The thermal properties of binary structure sI clathrate hydrate from molecular dynamics simulation. MOLECULAR SIMULATION 2019. [DOI: 10.1080/08927022.2019.1572142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hakime Ghafari
- Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran
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Tetrahydrofuran (THF)-Mediated Structure of THF·(H2O)n=1–10: A Computational Study on the Formation of the THF Hydrate. CRYSTALS 2019. [DOI: 10.3390/cryst9020073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tetrahydrofuran (THF) is well known as a former and a promoter of clathrate hydrates, but the molecular mechanism for the formation of these compounds is not yet well understood. We performed ab initio calculations and ab initio molecular dynamics simulations to investigate the formation, structure, and stability of THF·(H2O)n=1–10 and its significance to the formation of the THF hydrate. Weak hydrogen bonds were found between THF and water molecules, and THF could promote water molecules from the planar pentagonal or hexagonal ring. As a promoter, THF could increase the binding ability of the CH4, CO2, or H2 molecule onto a water face, but could also enhance the adsorption of other THF molecules, causing an enrichment effect.
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Pérez-Rodríguez M, Otero-Fernández J, Comesaña A, Fernández-Fernández ÁM, Piñeiro MM. Simulation of Capture and Release Processes of Hydrogen by β-Hydroquinone Clathrate. ACS OMEGA 2018; 3:18771-18782. [PMID: 31458440 PMCID: PMC6644111 DOI: 10.1021/acsomega.8b01798] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/14/2018] [Indexed: 05/27/2023]
Abstract
Using molecular simulation techniques, we investigate the storage capabilities of H2 gas by the clathrate of hydroquinone (HQ). Quantum mechanics calculations have been used to assess structure and interactions at the atomic scale and molecular dynamics to model the HQ clathrate at successive equilibriums during the processes of capture and release of H2, as well as the diffusion of H2 inside the clathrate structure. The thermodynamic conditions of the simulations performed try to reproduce closely the corresponding experimental procedures, with results that are in good agreement with literature observed trends. The results obtained contribute to depict a more complete and better substantiated image of the mechanisms involved in stability and in the processes of capture and release of H2 by the HQ clathrate.
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Xu J, Chen Z, Liu J, Sun Z, Wang X, Zhang J. A molecular dynamic study on the dissociation mechanism of SI methane hydrate in inorganic salt aqueous solutions. J Mol Graph Model 2017; 75:403-412. [PMID: 28666231 DOI: 10.1016/j.jmgm.2017.03.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 03/28/2017] [Accepted: 03/29/2017] [Indexed: 10/19/2022]
Abstract
Gas hydrate is not only a potential energy resource, but also almost the biggest challenge in oil/gas flow assurance. Inorganic salts such as NaCl, KCl and CaCl2 are widely used as the thermodynamic inhibitor to reduce the risk caused by hydrate formation. However, the inhibition mechanism is still unclear. Therefore, molecular dynamic (MD) simulation was performed to study the dissociation of structure I (SI) methane hydrate in existence of inorganic salt aqueous solution on a micro-scale. The simulation results showed that, the dissociation became stagnant due to the presence of liquid film formed by the decomposed water molecules, and more inorganic ions could shorten the stagnation-time. The diffusion coefficients of ions and water molecules were the largest in KCl system. The structures of ion/H2O and H2O/H2O were the most compact in hydrate/NaCl system. The ionic ability to decompose hydrate cells followed the sequence of: Ca2+>2K+>2Cl->2Na+.
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Affiliation(s)
- Jiafang Xu
- University of Petroleum (East China), Qingdao, China; National Engineering Laboratory for Subsea Equipment Testing and Detection Technology, China.
| | - Zhe Chen
- University of Petroleum (East China), Qingdao, China
| | | | - Zening Sun
- China United Coalbed Methane Corporation, Ltd., Taiyuan, China.
| | - Xiaopu Wang
- University of Petroleum (East China), Qingdao, China
| | - Jun Zhang
- University of Petroleum (East China), Qingdao, China.
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11
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Alavi S, Ripmeester JA. Simulations of hydrogen gas in clathrate hydrates. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1295456] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Saman Alavi
- National Research Council of Canada, Ottawa, Canada
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada
| | - John A. Ripmeester
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada
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12
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Pérez-Rodríguez M, Vidal-Vidal A, Míguez JM, Blas FJ, Torré JP, Piñeiro MM. Computational study of the interplay between intermolecular interactions and CO 2 orientations in type I hydrates. Phys Chem Chem Phys 2017; 19:3384-3393. [PMID: 28092383 DOI: 10.1039/c6cp07097c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Carbon dioxide (CO2) molecules show a rich orientation landscape when they are enclathrated in type I hydrates. Previous studies have described experimentally their preferential orientations, and some theoretical works have explained, but only partially, these experimental results. In the present paper, we use classical molecular dynamics and electronic density functional theory to advance in the theoretical description of CO2 orientations within type I hydrates. Our results are fully compatible with those previously reported, both theoretical and experimental, the geometric shape of the cavities in hydrate being, and therefore, the steric constraints, responsible for some (but not all) preferential angles. In addition, our calculations also show that guest-guest interactions in neighbouring cages are a key factor to explain the remaining experimental angles. Besides the implication concerning equation of state hydrate modeling approximations, the conclusion is that these guest-guest interactions should not be neglected, contrary to the usual practice.
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Affiliation(s)
- M Pérez-Rodríguez
- Dpto. de Física Aplicada, Fac. de Ciencias, Univ. de Vigo, E36310, Spain.
| | - A Vidal-Vidal
- Dpto. de Física Aplicada, Fac. de Ciencias, Univ. de Vigo, E36310, Spain.
| | - J M Míguez
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Física Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, E21071 Huelva, Spain
| | - F J Blas
- Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Física Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, E21071 Huelva, Spain
| | - J-P Torré
- UMR 5150 - Laboratoire des Fluides Complexes et leurs Réservoirs, Université de Pau et des Pays de l'Adour, B. P. 1155, Pau, Cedex 64013, France
| | - M M Piñeiro
- Dpto. de Física Aplicada, Fac. de Ciencias, Univ. de Vigo, E36310, Spain.
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13
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Xu J, Gu T, Sun Z, Li X, Wang X. Molecular dynamics study on the dissociation of methane hydrate via inorganic salts. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1081708] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Takasu Y, Matsumoto S, Fujii Y, Nishio I. Raman study of the low temperature behavior of tetrahydrofuran molecule in the cage of clathrate hydrate. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Atamas AA, de Leeuw SW, Cuppen HM. A method distinguishing between guest molecules that can form sI, sII, and sH hydrogen clathrates. RSC Adv 2015. [DOI: 10.1039/c5ra03175c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new method based on free energy calculations is proposed for discriminating between promoters that can form sI, sII, and sH hydrogen clathrates.
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Affiliation(s)
- Alexander A. Atamas
- Institute for Molecules and Materials
- Radboud University
- 6525 AJ Nijmegen
- The Netherlands
| | - Simon W. de Leeuw
- Leiden Institute of Chemistry
- Gorlaeus Laboratories
- Leiden University
- 2300 RA Leiden
- The Netherlands
| | - Herma M. Cuppen
- Institute for Molecules and Materials
- Radboud University
- 6525 AJ Nijmegen
- The Netherlands
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16
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Perspectives on molecular simulation of clathrate hydrates: Progress, prospects and challenges. Chem Eng Sci 2015. [DOI: 10.1016/j.ces.2014.07.047] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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17
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Yagasaki T, Matsumoto M, Andoh Y, Okazaki S, Tanaka H. Dissociation of Methane Hydrate in Aqueous NaCl Solutions. J Phys Chem B 2014; 118:11797-804. [DOI: 10.1021/jp507978u] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takuma Yagasaki
- Department
of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Masakazu Matsumoto
- Department
of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Yoshimichi Andoh
- Department
of Applied Chemistry, Nagoya University, Nagoya 464-8603, Japan
| | - Susumu Okazaki
- Department
of Applied Chemistry, Nagoya University, Nagoya 464-8603, Japan
| | - Hideki Tanaka
- Department
of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan
- Research Center
of New Functional Materials for Energy Production, Storage and Transport, Okayama 700-8530, Japan
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18
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Celli M, Powers A, Colognesi D, Xu M, Bačić Z, Ulivi L. Experimental inelastic neutron scattering spectrum of hydrogen hexagonal clathrate-hydrate compared with rigorous quantum simulations. J Chem Phys 2013; 139:164507. [DOI: 10.1063/1.4826451] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Milva Celli
- Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
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Cao H, English NJ, MacElroy JMD. Diffusive hydrogen inter-cage migration in hydrogen and hydrogen-tetrahydrofuran clathrate hydrates. J Chem Phys 2013; 138:094507. [PMID: 23485313 DOI: 10.1063/1.4793468] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Classical equilibrium molecular dynamics simulations have been performed to investigate the diffusive properties of inter-cage hydrogen migration in both pure hydrogen and mixed hydrogen-tetrahydrofuran sII hydrates at 0.05 kbar from 200 K and up to 250-260 K. For mixed H2-THF systems in which there is single H2 occupation of the small cage (labelled "1S1L"), we found that no H2 migration occurs. However, for more densely filled H2-THF and pure-H2 systems, in which there is more than single H2 occupation in the small cage, there is an onset of inter-cage H2 migration events from the small cages to neighbouring cavities at around 200 K. The mean square displacements of the hydrogen molecules were fitted to a mathematical model consisting of an anomalous term and a Fickian component, and nonlinear regression fitting was conducted to estimate long-time (inter-cage) diffusivities. An approximate Arrhenius temperature relationship for the diffusion coefficient was examined and an estimation of the hydrogen hopping energy barrier was calculated for each system.
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Affiliation(s)
- Huayu Cao
- The SFI Strategic Research Cluster in Solar Energy Conversion, School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, Ireland
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Atamas AA, Cuppen HM, Koudriachova MV, de Leeuw SW. Monte Carlo calculations of the free energy of binary sII hydrogen clathrate hydrates for identifying efficient promoter molecules. J Phys Chem B 2013; 117:1155-65. [PMID: 23289842 DOI: 10.1021/jp306585t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The thermodynamics of binary sII hydrogen clathrates with secondary guest molecules is studied with Monte Carlo simulations. The small cages of the sII unit cell are occupied by one H(2) guest molecule. Different promoter molecules entrapped in the large cages are considered. Simulations are conducted at a pressure of 1000 atm in a temperature range of 233-293 K. To determine the stabilizing effect of different promoter molecules on the clathrate, the Gibbs free energy of fully and partially occupied sII hydrogen clathrates are calculated. Our aim is to predict what would be an efficient promoter molecule using properties such as size, dipole moment, and hydrogen bonding capability. The gas clathrate configurational and free energies are compared. The entropy makes a considerable contribution to the free energy and should be taken into account in determining stability conditions of binary sII hydrogen clathrates.
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Affiliation(s)
- Alexander A Atamas
- Theoretical Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
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21
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Alavi S, Ripmeester JA. Effect of small cage guests on hydrogen bonding of tetrahydrofuran in binary structure II clathrate hydrates. J Chem Phys 2012; 137:054712. [DOI: 10.1063/1.4739928] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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22
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Belosludov RV, Mizuseki H, Souissi M, Kawazoe Y, Kudoh J, Subbotin OS, Adamova TP, Belosludov VR. An atomistic level description of guest molecule effect on the formation of hydrate crystal nuclei by ab initio calculations. J STRUCT CHEM+ 2012. [DOI: 10.1134/s0022476612040014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Iwai Y, Hirata M. Molecular dynamics simulation of diffusion of hydrogen in binary hydrogen–tetrahydrofuran hydrate. MOLECULAR SIMULATION 2012. [DOI: 10.1080/08927022.2011.633256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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24
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English NJ, Gorman PD, MacElroy JMD. Mechanisms for thermal conduction in hydrogen hydrate. J Chem Phys 2012; 136:044501. [DOI: 10.1063/1.3677189] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gorman PD, English NJ, MacElroy JMD. Dynamical cage behaviour and hydrogen migration in hydrogen and hydrogen-tetrahydrofuran clathrate hydrates. J Chem Phys 2012; 136:044506. [DOI: 10.1063/1.3677188] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Giannasi A, Celli M, Zoppi M, Moraldi M, Ulivi L. Experimental and theoretical analysis of the rotational Raman spectrum of hydrogen molecules in clathrate hydrates. J Chem Phys 2011; 135:054506. [PMID: 21823711 DOI: 10.1063/1.3618549] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The Raman spectra of H(2) and HD molecules in simple hydrogen and binary hydrogen-tetrahydrofuran clathrate hydrates have been measured at temperatures as low as 20 K. The rotational bands of trapped molecules in simple and binary hydrates have been analyzed, and the contributions originating from hydrogen molecules in the large cages have been separated from those in the small cages. A theoretical model, consisting in rigid cages enclosing interacting hydrogen molecules, has been exploited to calculate, on the basis of quantum mechanics, the Raman intensity of the rotational transitions for up to two interacting molecules in one cage. A comparison with experiment leads to a clear interpretation of sidebands appearing in the Raman rotational lines. The quantitative agreement between theory and experiment obtained in some cases clarifies the importance of the choice of the interaction potential, and of the proton disorder in the clathrate crystal.
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Affiliation(s)
- Alessandra Giannasi
- Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Sesto Fiorentino, Italy
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27
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Papadimitriou NI, Tsimpanogiannis IN, Stubos AK, Martín A, Rovetto LJ, Florusse LJ, Peters CJ. Experimental and Computational Investigation of the sII Binary He−THF Hydrate. J Phys Chem B 2011; 115:1411-5. [DOI: 10.1021/jp105451m] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nikolaos I. Papadimitriou
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece
| | - Ioannis N. Tsimpanogiannis
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece
| | - Athanassios K. Stubos
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece
| | - Angel Martín
- Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Laura J. Rovetto
- Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Louw J. Florusse
- Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Cor J. Peters
- Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
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Frankcombe TJ, Kroes GJ. A new method for screening potential sII and sH hydrogen clathrate hydrate promoters with model potentials. Phys Chem Chem Phys 2011; 13:13410-20. [DOI: 10.1039/c0cp02702b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Gorman PD, English NJ, MacElroy JMD. Dynamical and energetic properties of hydrogen and hydrogen–tetrahydrofuran clathrate hydrates. Phys Chem Chem Phys 2011; 13:19780-7. [DOI: 10.1039/c1cp21882d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Finney AR, Rodger PM. Applying the Z method to estimate temperatures of melting in structure II clathrate hydrates. Phys Chem Chem Phys 2011; 13:19979-87. [DOI: 10.1039/c1cp21919g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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31
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Erfan-Niya H, Modarress H, Zaminpayma E. Computational study on the structure II clathrate hydrate of methane and large guest molecules. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-010-9899-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Papadimitriou N, Tsimpanogiannis I, Stubos A. Monte Carlo study of sI hydrogen hydrates. MOLECULAR SIMULATION 2010. [DOI: 10.1080/08927021003752796] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Yoshioka H, Ota M, Sato Y, Watanabe M, Inomata H, Smith RL, Peters CJ. Decomposition kinetics and recycle of binary hydrogen-tetrahydrofuran clathrate hydrate. AIChE J 2010. [DOI: 10.1002/aic.12241] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Belosludov RV, Subbotin OS, Mizuseki H, Kawazoe Y, Belosludov VR. Accurate description of phase diagram of clathrate hydrates at the molecular level. J Chem Phys 2009; 131:244510. [DOI: 10.1063/1.3276282] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Papadimitriou NI, Tsimpanogiannis IN, Stubos AK. Gas content of binary clathrate hydrates with promoters. J Chem Phys 2009; 131:044102. [DOI: 10.1063/1.3160767] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Sum AK, Koh CA, Sloan ED. Clathrate Hydrates: From Laboratory Science to Engineering Practice. Ind Eng Chem Res 2009. [DOI: 10.1021/ie900679m] [Citation(s) in RCA: 300] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Amadeu K. Sum
- Center for Hydrate Research, Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado 80401
| | - Carolyn A. Koh
- Center for Hydrate Research, Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado 80401
| | - E. Dendy Sloan
- Center for Hydrate Research, Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado 80401
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37
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Nada H. Anisotropy in Growth Kinetics of Tetrahydrofuran Clathrate Hydrate: A Molecular Dynamics Study. J Phys Chem B 2009; 113:4790-8. [DOI: 10.1021/jp810041t] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroki Nada
- National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba 305-8569, Japan
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38
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Mohammadi-Manesh H, Alavi S, Woo TK, Ashrafizaadeh M, Najafi B. Molecular dynamics simulation of 13C NMR powder lineshapes of CO in structure I clathrate hydrate. Phys Chem Chem Phys 2009; 11:8821-8. [DOI: 10.1039/b905233j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Sebastianelli F, Xu M, Bačić Z. Quantum dynamics of small H2 and D2 clusters in the large cage of structure II clathrate hydrate: Energetics, occupancy, and vibrationally averaged cluster structures. J Chem Phys 2008; 129:244706. [DOI: 10.1063/1.3049781] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Papadimitriou N, Tsimpanogiannis I, Papaioannou A, Stubos A. Monte Carlo study of sII and sH argon hydrates with multiple occupancy of cages. MOLECULAR SIMULATION 2008. [DOI: 10.1080/08927020802101734] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- N.I. Papadimitriou
- a Environmental Research Laboratory , National Center for Scientific Research ‘Demokritos’ , Agia Paraskevi, 15310, Greece
| | - I.N. Tsimpanogiannis
- a Environmental Research Laboratory , National Center for Scientific Research ‘Demokritos’ , Agia Paraskevi, 15310, Greece
| | - A.Th. Papaioannou
- b School of Chemical Engineering, National Technical University of Athens , Zografou, 15780, Greece
| | - A.K. Stubos
- a Environmental Research Laboratory , National Center for Scientific Research ‘Demokritos’ , Agia Paraskevi, 15310, Greece
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41
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Chun DH, Lee TY. Molecular simulation of cage occupancy and selectivity of binary THF–H2 sII hydrate. MOLECULAR SIMULATION 2008. [DOI: 10.1080/08927020802301946] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Dong-Hyuk Chun
- a Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon, South Korea
| | - Tai-Yong Lee
- a Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology , Daejeon, South Korea
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42
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Papadimitriou NI, Tsimpanogiannis IN, Peters CJ, Papaioannou AT, Stubos AK. Hydrogen Storage in sH Hydrates: A Monte Carlo Study. J Phys Chem B 2008; 112:14206-11. [DOI: 10.1021/jp805906c] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- N. I. Papadimitriou
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece, and Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - I. N. Tsimpanogiannis
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece, and Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - C. J. Peters
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece, and Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - A. Th. Papaioannou
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece, and Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - A. K. Stubos
- Environmental Research Laboratory, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece, School of Chemical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 15780 Zografou, Greece, and Laboratory of Process Equipment, Department of Process and Energy, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
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43
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Xu M, Sebastianelli F, Bačić Z. Quantum dynamics of H2, D2, and HD in the small dodecahedral cage of clathrate hydrate: Evaluating H2-water nanocage interaction potentials by comparison of theory with inelastic neutron scattering experiments. J Chem Phys 2008; 128:244715. [DOI: 10.1063/1.2945895] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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44
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Alavi S, Dornan P, Woo TK. Determination of NMR lineshape anisotropy of guest molecules within inclusion complexes from molecular dynamics simulations. Chemphyschem 2008; 9:911-9. [PMID: 18386265 DOI: 10.1002/cphc.200700805] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Nonspherical cages in inclusion compounds can result in non-uniform motion of guest species in these cages and anisotropic lineshapes in NMR spectra of the guest. Herein, we develop a methodology to calculate lineshape anisotropy of guest species in cages based on molecular dynamics simulations of the inclusion compound. The methodology is valid for guest atoms with spin 1/2 nuclei and does not depend on the temperature and type of inclusion compound or guest species studied. As an example, the nonspherical shape of the structure I (sI) clathrate hydrate large cages leads to preferential alignment of linear CO(2) molecules in directions parallel to the two hexagonal faces of the cages. The angular distribution of the CO(2) guests in terms of a polar angle theta and azimuth angle phi and small amplitude vibrational motions in the large cage are characterized by molecular dynamics simulations at different temperatures in the stability range of the CO(2) sI clathrate. The experimental (13)C NMR lineshapes of CO(2) guests in the large cages show a reversal of the skew between the low temperature (77 K) and the high temperature (238 K) limits of the stability of the clathrate. We determine the angular distributions of the guests in the cages by classical MD simulations of the sI clathrate and calculate the (13)C NMR lineshapes over a range of temperatures. Good agreement between experimental lineshapes and calculated lineshapes is obtained. No assumptions regarding the nature of the guest motions in the cages are required.
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Affiliation(s)
- Saman Alavi
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
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45
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Alavi S, Klug DD, Ripmeester JA. Simulations of structure II H2 and D2 clathrates: Potentials incorporating quantum corrections. J Chem Phys 2008; 128:064506. [DOI: 10.1063/1.2825618] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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46
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Vatamanu J, Kusalik PG. Heterogeneous crystal growth of methane hydrate on its sII [001] crystallographic face. J Phys Chem B 2008; 112:2399-404. [PMID: 18247598 DOI: 10.1021/jp077583k] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This paper presents a systematic molecular simulation study of the heterogeneous crystal growth of methane hydrate sII from supersaturated aqueous methane solutions. The growth of sII hydrate on the [001] crystallographic face is achieved through utilization of a recently proposed methodology, and rates of crystal growth of 1 A/ns were sustained for the molecular models and specific conditions employed in this work. Characteristics of the crystals grown as well as properties and structure of the interface are examined. Water cages with a 5(12)6(3) arrangement, which are improper to both sI and sII structures, are identified during the heterogeneous growth of sII methane hydrate. We show that the growth of a [001] face of sII hydrate can produce an sI crystalline structure, confirming that cross-nucleation of methane hydrate structures is possible. Defects consisting of two methane molecules trapped in large 5(12)6(4) cages and water molecules trapped in small and large cages are observed, where in one instance we have found a large 5(12)6(4) cage containing three water molecules.
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Affiliation(s)
- Jenel Vatamanu
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
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47
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Xu M, Sebastianelli F, Bačić Z. Hydrogen Molecule in the Small Dodecahedral Cage of a Clathrate Hydrate: Quantum Translation−Rotation Dynamics at Higher Excitation Energies. J Phys Chem A 2007; 111:12763-71. [DOI: 10.1021/jp076296d] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Minzhong Xu
- Department of Chemistry, New York University, New York, New York 10003
| | | | - Zlatko Bačić
- Department of Chemistry, New York University, New York, New York 10003
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48
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Dornan P, Alavi S, Woo TK. Free energies of carbon dioxide sequestration and methane recovery in clathrate hydrates. J Chem Phys 2007; 127:124510. [PMID: 17902924 DOI: 10.1063/1.2769634] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Classical molecular dynamics simulations are used to compare the stability of methane, carbon dioxide, nitrogen, and mixed CO(2)N(2) structure I (sI) clathrates under deep ocean seafloor temperature and pressure conditions (275 K and 30 MPa) which were considered suitable for CO(2) sequestration. Substitution of methane guests in both the small and large sI cages by CO(2) and N(2) fluids are considered separately to determine the separate contributions to the overall free energy of substitution. The structure I clathrate with methane in small cages and carbon dioxide in large cages is determined to be the most stable. Substitutions of methane in the small cages with CO(2) and N(2) have positive free energies. Substitution of methane with CO(2) in the large cages has a large negative free energy and substitution of the methane in the large cages with N(2) has a small positive free energy. The calculations show that under conditions where storage is being considered, carbon dioxide spontaneously replaces methane from sI clathrates, causing the release of methane. This process must be considered if there are methane clathrates present where CO(2) sequestration is to be attempted. The calculations also indicate that N(2) does not directly compete with CO(2) during methane substitution or clathrate formation and therefore can be used as a carrier gas or may be present as an impurity. Simulations further reveal that the replacement of methane with CO(2) in structure II (sII) cages also has a negative free energy. In cases where sII CO(2) clathrates are formed, only single occupancy of the large cages will be observed.
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Affiliation(s)
- Peter Dornan
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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Struzhkin VV, Militzer B, Mao WL, Mao HK, Hemley RJ. Hydrogen Storage in Molecular Clathrates. Chem Rev 2007; 107:4133-51. [PMID: 17850164 DOI: 10.1021/cr050183d] [Citation(s) in RCA: 327] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Viktor V Struzhkin
- Carnegie Institution of Washington, Geophysical Laboratory, 5251 Broad Branch Road, NW, Washington, DC 20015, USA
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