An experimental study of the thermolysis of hydrogen cyanide: the role of hydrothermal systems in chemical evolution
| Autor: | Marta Ruiz-Bermejo, María Colín-García, Saúl A. Villafañe-Barajas, Alicia Negrón-Mendoza |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics and Astronomy (miscellaneous)
010405 organic chemistry Thermal decomposition Hydrogen cyanide Raw material 01 natural sciences Chemical reaction Hydrothermal circulation 0104 chemical sciences chemistry.chemical_compound Chemical species chemistry Space and Planetary Science Computational chemistry 0103 physical sciences Earth and Planetary Sciences (miscellaneous) Molecule 010303 astronomy & astrophysics Ecology Evolution Behavior and Systematics Hydrothermal vent |
| Zdroj: | International Journal of Astrobiology. 19:369-378 |
| ISSN: | 1475-3006 1473-5504 |
| DOI: | 10.1017/s1473550420000142 |
| Popis: | Hydrogen cyanide (HCN) is considered a fundamental molecule in prebiotic chemistry experiments due to the fact that it could have an important role as raw material to form more complex molecules, as well as it could be an intermediate molecule in chemical reactions. However, the primitive scenarios in which this molecule might be available have been widely discussed. Hydrothermal systems have been considered as abiotic reactors and ideal niches for chemical evolution. Nevertheless, several experiments have shown that high temperatures and pressures could be adverse to the stability of organic molecules. Thus, it is necessary to carry out systematic experiments to study the synthesis, stability and fate of organic molecules in hydrothermal scenarios. In this work, we performed experiments focused on the stability and fate of HCN under a simple hydrothermal system scenario: the thermolysis of HCN at 100°C, at acidic and basic pH and in the presence of Mg-montmorillonite. Furthermore, we analysed the products from HCN thermolysis and highlighted the role of these chemical species as prebiotic molecules under a hydrothermal scenario. |
| Databáze: | OpenAIRE |
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