Abiotic Formation of Methane and Prebiotic Molecules on Mars and Other Planets
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00543199" target="_blank" >RIV/61388955:_____/21:00543199 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/21:10442257
Result on the web
<a href="http://hdl.handle.net/11104/0320469" target="_blank" >http://hdl.handle.net/11104/0320469</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsearthspacechem.1c00041" target="_blank" >10.1021/acsearthspacechem.1c00041</a>
Alternative languages
Result language
angličtina
Original language name
Abiotic Formation of Methane and Prebiotic Molecules on Mars and Other Planets
Original language description
We explored the photocatalytic (UV-driven) reduction of CO2 on mineral surfaces in acidic conditions and observed the production of methane. Based on our measured laboratory reaction rates, we estimate a 2.81 × 107 cm-2 s-1 methane surface flux on the current-day Mars. We also estimate a Martian methane destruction rate of 2.37 × 105 cm-2 s-1, which is 2 orders of magnitude less than the production rate. The flux of the photochemically produced methane therefore seems sufficient to explain the background levels of methane detected on Mars. This photocatalytic reduction is part of a proposed novel reaction network tightly bound to the chemistry of CO2 in planetary atmospheres described in this paper. The emergent methane-enriched atmosphere can be transformed by high-energy-density events on rocky planets to nucleic acid bases and amino acids. Finally, destructive processes, such as volcanic eruptions or lightning storms, can turn the synthesized products back into CO2 in any step. This proposed scenario should be, in our opinion, included in models of exoplanetary chemistry.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Earth and Space Chemistry
ISSN
2472-3452
e-ISSN
2472-3452
Volume of the periodical
5
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
1172-1179
UT code for WoS article
000655638500017
EID of the result in the Scopus database
2-s2.0-85106408962