Separation method and separation apparatus of isotopes from gaseous substances
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United States of America Patent
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Issued Date -
Oct 20, 2005
app pub date -
Sep 7, 2004
filing date -
Mar 8, 2002
priority date (Note) -
Abandoned
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Abstract
A isotopic gas of high purity is obtained at low cost, wherein for example, in a case of separating .sup.13CH.sub.4 from methane gas and obtaining .sup.13CH.sub.4 of high purity, the enrichment of .sup.13CH.sub.4, using the difference in adsorption of .sup.12CH.sub.4 and .sup.13CH.sub.4 onto an adsorbing material, is performed up to a certain concentration, and thereafter, .sup.13CH.sub.4 is enriched by a separation method by distillation that uses the difference in boiling point.
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