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Martian Redox Chemistry: Oxygen Reduction in Low-Temperature Magnesium Perchlorate Brines.

Joseph ElliottKamonwad NgamchueaChristopher Batchelor-McAuleyRichard G Compton
Published in: The journal of physical chemistry letters (2017)
NASA has a mandate to send humans to Mars by 2033. Recent discoveries regarding Mars include the likely presence of low-temperature liquid brines on the planet's surface. This work investigates redox chemistry in near saturated aqueous 2.8 M Mg(ClO4)2 at temperatures as low as -34 °C. These conditions are comparable to those thought to be found on the Martian surface. In particular, electro-reduction of oxygen is studied, and the diffusion coefficient and solubility of this important redox species are established.
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