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Origin of methane and biomolecules from a CO2 cycle on terrestrial planets
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SYSNO ASEP 0576147 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Origin of methane and biomolecules from a CO2 cycle on terrestrial planets Author(s) Civiš, Svatopluk (UFCH-W) RID, ORCID, SAI
Knížek, Antonín (UFCH-W) ORCID, RID, SAI
Ferus, Martin (UFCH-W) ORCID, RIDSource Title European Conference on Laboratory Astrophysics ECLA2020, The Interplay of Dust, Ide, and Gas in Space. - Cham : Springer, 2023 / Mennella V. ; Joblin Ch. - ISBN 978-3-031-29002-2 Pages s. 721-726 Number of pages 7 s. Publication form Print - P Action European Conference on Laboratory Astrophysics Event date 26.09.2021 - 01.10.2021 VEvent location Anacapri Country IT - Italy Event type WRD Language eng - English Country CH - Switzerland Keywords carbon dioxide ; methane ; carbon cycle ; infrared spectroscopy Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects EF16_019/0000778 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFCH-W - RVO:61388955 EID SCOPUS 85172418084 DOI 10.1007/978-3-031-29003-9_39 Annotation Understanding the chemical evolution of newly formed terrestrial planets involves uncertainties in atmospheric chemical composition and assessing the plausibility of biomolecule synthesis. In this study, an original scenario for the origin of methane on Mars and terrestrial planets is suggested. Carbon dioxide in Martian and other planetary atmospheres can be abiotically converted into a mixture of methane and carbon monoxide by 'methanogenesis' on porous mineral photoactive surfaces under soft ultraviolet irradiation. On young planets exposed to heavy bombardment by interplanetary matter, this process can be followed by biomolecule synthesis through the reprocessing of reactive reducing atmospheres by impact-induced shock waves. The proposed mechanism of methanogenesis may help to answer the question concerning the formation of methane and carbon monoxide by photochemical processes, the formation of biomolecules on early Earth and other terrestrial planets, and the source and seasonal variation of methane concentrations on Mars. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2024
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