M. Maes, M. Gibilaro, P. Chamelot, C. Chiron, S. Chevrel, P. Pinet, L. Massot, J. Favier | 2024 | Planetary and Space Science
DOI 10.1016/j.pss.2024.105854Review state
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This study investigates the behavior of a lunar mare crystalline analog in molten LiF-NaF at 800°C for ISRU applications. The solubility of oxides in the simulant is compared using ICP-AES, and cyclic voltammetry confirms electroactivity of oxides except SiO2 and TiO2. Electrolysis on cathodic substrates produces metallic deposits, and a synthetic oxide mixture replicates the simulant's electrochemical behavior. The article investigates the behavior of lunar simulants in molten fluoride salts, focusing on their solubility and electrochemical properties at high temperatures. It examines the solubility of individual oxides and lunar simulants in LiF-NaF melts at 800°C, as well as the electrochemical deposition of metals from these melts. The study also compares a synthetic oxide powder with a natural lunar simulant, providing insights into potential applications for in-situ resource utilization (ISRU) on the Moon. The provided text appears to be a mix of metadata and content related to a scientific paper, likely from the journal 'Planetary and Space Science' (PSS). It includes information about the paper's DOI, title, authors, and links to the PDF and image files. There is no clear t
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Solubility of individual oxides in molten LiF-NaF at 800°C
Solubility test
Comparison of BPY-N and BPY SOP in molten LiF-NaF at 800°C
Comparative analysis
Testing of LMS-3 in electrochemical processes
Electrochemical process test
Testing of LMS-4 in solubility in molten salts
Solubility test
Electrolysis of BPY-N in LiF-NaF
electrolysis
Electrolysis of BPY-SOP in LiF-NaF
electrolysis
SEM-EDS analysis of electrolysis products
microscopy
Hydrogen reduction
oxygen extraction
Bulk chemistry
SiO2: 46.9% (LMS-1), 42.8% (BPY-N), 41.3% (Apollo 11); Al2 O3: 12.4% (LMS-1), 11.5% (BPY-N), 13.7% (Apollo 11); FeO: 8.6% (LMS-1), / (BPY-N), 15.8% (Apollo 11); Fe2 O3: / (LMS-1),
Electrochemical behavior
All main oxides are electroactive except SiO2 and TiO2; SiO2 and TiO2 are extracted in alloyed form through Under Potential Deposition (UPD); Metallic deposition of Al and Ti is on
oxygen extraction efficiency
96%
oxygen extraction efficiency
43.4%
anodic current efficiency
78.28%
energy consumption
12.3 kWh/kg O
melting point
652 C
Particle size distribution
Dv (10) = 6 m; Dv (50) = 131 m; Dv (90) = 432 m