Synthesis of prebiotic organics from CO2 by catalysis with meteoritic and volcanic particles
S. Peters et.al. 2023 Scientific Reports https://doi.org/10.1038/s41598-023-33741-8
Sophia Peters, Dmitry A. Semenov, Rupert Hochleitner & Oliver Trapp
Scientific Reports https://doi.org/10.1038/s41598-023-33741-8
The emergence of prebiotic organics was a mandatory step toward the origin of life. The significance of the exogenous delivery versus the in-situ synthesis from atmospheric gases is still under debate. We experimentally demonstrate that iron-rich meteoritic and volcanic particles activate and catalyse the fixation of CO2, yielding the key precursors of life-building blocks. This catalysis is robust and produces selectively aldehydes, alcohols, and hydrocarbons, independent of the redox state of the environment. It is facilitated by common minerals and tolerates a broad range of the early planetary conditions (150–300 °C, ≲ 10–50 bar, wet or dry climate). We find that up to 6 × 108 kg/year of prebiotic organics could have been synthesized by this planetary-scale process from the atmospheric CO2 on Hadean Earth.