Volatile inventories in clathrate hydrates formed in the primordial nebula.
International audience The examination of ambient thermodynamic conditions suggests that clathrate hydrates could exist in the Martian permafrost, on the surface and in the interior of Titan, as well as in other icy satellites. Clathrate hydrates are probably formed in a significant fraction of plan...
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ftunivrennes1hal:oai:HAL:hal-00555848v1 2024-06-23T07:56:09+00:00 Volatile inventories in clathrate hydrates formed in the primordial nebula. Mousis, Olivier Lunine, Jonathan I. Picaud, Sylvain Cordier, Daniel Univers, Théorie, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Institut de Physique de Rennes (IPR) Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS) 2010 https://hal.science/hal-00555848 https://doi.org/10.1039/C003658G en eng HAL CCSD Royal Society of Chemistry info:eu-repo/semantics/altIdentifier/arxiv/1011.4171 info:eu-repo/semantics/altIdentifier/doi/10.1039/C003658G info:eu-repo/semantics/altIdentifier/pmid/21302563 hal-00555848 https://hal.science/hal-00555848 ARXIV: 1011.4171 doi:10.1039/C003658G PUBMED: 21302563 ISSN: 1359-6640 EISSN: 1364-5498 Faraday Discussions https://hal.science/hal-00555848 Faraday Discussions, 2010, 147, pp.509-525. ⟨10.1039/C003658G⟩ [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics info:eu-repo/semantics/article Journal articles 2010 ftunivrennes1hal https://doi.org/10.1039/C003658G 2024-06-11T14:11:06Z International audience The examination of ambient thermodynamic conditions suggests that clathrate hydrates could exist in the Martian permafrost, on the surface and in the interior of Titan, as well as in other icy satellites. Clathrate hydrates are probably formed in a significant fraction of planetesimals in the solar system. Thus, these crystalline solids may have been accreted in comets, in the forming giant planets and in their surrounding satellite systems. In this work, we use a statistical thermodynamic model to investigate the composition of clathrate hydrates that may have formed in the primordial nebula. In our approach, we consider the formation sequence of the different ices occurring during the cooling of the nebula, a reasonable idealization of the process by which volatiles are trapped in planetesimals. We then determine the fractional occupancies of guests in each clathrate hydrate formed at a given temperature. The major ingredient of our model is the description of the guest-clathrate hydrate interaction by a spherically averaged Kihara potential with a nominal set of parameters, most of which are fitted to experimental equilibrium data. Our model allows us to find that Kr, Ar and N2 can be efficiently encaged in clathrate hydrates formed at temperatures higher than approximately 48.5 K in the primitive nebula, instead of forming pure condensates below 30 K. However, we find at the same time that the determination of the relative abundances of guest species incorporated in these clathrate hydrates strongly depends on the choice of the parameters of the Kihara potential and also on the adopted size of cages. Indeed, by testing different potential parameters, we have noted that even minor dispersions between the different existing sets can lead to non-negligible variations in the determination of the volatiles trapped in clathrate hydrates formed in the primordial nebula. However, these variations are not found to be strong enough to reverse the relative abundances between the different ... Article in Journal/Newspaper permafrost Université de Rennes 1: Publications scientifiques (HAL) Faraday Discussions 147 509 |
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Université de Rennes 1: Publications scientifiques (HAL) |
op_collection_id |
ftunivrennes1hal |
language |
English |
topic |
[SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics |
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[SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics Mousis, Olivier Lunine, Jonathan I. Picaud, Sylvain Cordier, Daniel Volatile inventories in clathrate hydrates formed in the primordial nebula. |
topic_facet |
[SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics |
description |
International audience The examination of ambient thermodynamic conditions suggests that clathrate hydrates could exist in the Martian permafrost, on the surface and in the interior of Titan, as well as in other icy satellites. Clathrate hydrates are probably formed in a significant fraction of planetesimals in the solar system. Thus, these crystalline solids may have been accreted in comets, in the forming giant planets and in their surrounding satellite systems. In this work, we use a statistical thermodynamic model to investigate the composition of clathrate hydrates that may have formed in the primordial nebula. In our approach, we consider the formation sequence of the different ices occurring during the cooling of the nebula, a reasonable idealization of the process by which volatiles are trapped in planetesimals. We then determine the fractional occupancies of guests in each clathrate hydrate formed at a given temperature. The major ingredient of our model is the description of the guest-clathrate hydrate interaction by a spherically averaged Kihara potential with a nominal set of parameters, most of which are fitted to experimental equilibrium data. Our model allows us to find that Kr, Ar and N2 can be efficiently encaged in clathrate hydrates formed at temperatures higher than approximately 48.5 K in the primitive nebula, instead of forming pure condensates below 30 K. However, we find at the same time that the determination of the relative abundances of guest species incorporated in these clathrate hydrates strongly depends on the choice of the parameters of the Kihara potential and also on the adopted size of cages. Indeed, by testing different potential parameters, we have noted that even minor dispersions between the different existing sets can lead to non-negligible variations in the determination of the volatiles trapped in clathrate hydrates formed in the primordial nebula. However, these variations are not found to be strong enough to reverse the relative abundances between the different ... |
author2 |
Univers, Théorie, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Institut de Physique de Rennes (IPR) Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mousis, Olivier Lunine, Jonathan I. Picaud, Sylvain Cordier, Daniel |
author_facet |
Mousis, Olivier Lunine, Jonathan I. Picaud, Sylvain Cordier, Daniel |
author_sort |
Mousis, Olivier |
title |
Volatile inventories in clathrate hydrates formed in the primordial nebula. |
title_short |
Volatile inventories in clathrate hydrates formed in the primordial nebula. |
title_full |
Volatile inventories in clathrate hydrates formed in the primordial nebula. |
title_fullStr |
Volatile inventories in clathrate hydrates formed in the primordial nebula. |
title_full_unstemmed |
Volatile inventories in clathrate hydrates formed in the primordial nebula. |
title_sort |
volatile inventories in clathrate hydrates formed in the primordial nebula. |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00555848 https://doi.org/10.1039/C003658G |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
ISSN: 1359-6640 EISSN: 1364-5498 Faraday Discussions https://hal.science/hal-00555848 Faraday Discussions, 2010, 147, pp.509-525. ⟨10.1039/C003658G⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/1011.4171 info:eu-repo/semantics/altIdentifier/doi/10.1039/C003658G info:eu-repo/semantics/altIdentifier/pmid/21302563 hal-00555848 https://hal.science/hal-00555848 ARXIV: 1011.4171 doi:10.1039/C003658G PUBMED: 21302563 |
op_doi |
https://doi.org/10.1039/C003658G |
container_title |
Faraday Discussions |
container_volume |
147 |
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509 |
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1802649061449269248 |