Physics – Geophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..183c&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 183 (SEE N92-10728 01-91)
Physics
Geophysics
Deposits, Ilmenite, Lunar Bases, Lunar Geology, Lunar Surface, Moon, Oxygen, Oxygen Production, Volcanoes, By-Products, Glass, Helium Isotopes, Hydrogen, Solar Wind, Sulfur, Titanium
Scientific paper
Hawke et al. (1990) suggest that ilmenite found in Apollo 17-type pyroclastic glass may provide feedstock for the hydrogen reduction of ilmenite process for producing lunar oxygen. They also suggest that the ilmenite may help retain solar wind hydrogen and helium which can be extracted for use at a lunar outpost or even transported back to Earth for fusion fuel in the case of helium-3. Therefore, they suggest that ilmenite-rich material may be the best candidate. Here, researchers propose a somewhat different approach. They propose that the pyroclastic glass can be reduced directly to produce oxygen and one or more metals. Sulfur would be another important byproduct of the processing. This process would eliminate the need for having specific minerals such as ilmenite or for doing any mineral concentration. The bulk pyroclastic would provide the feedstock. Some recent experiments at the Johnson Space Center suggest that an iron-rich composition would be the most suitable for this direct feedstock reduction and that the titanium content may not be important. Also, the lunar pyroclastic deposits would be extremely useful in constructing and supporting a lunar base.
Coombs Cassandra R.
Hawke Bernard Ray
Heiken Grant
McKay David S.
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