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US 12,172,890 B1Granted
Method and apparatus for manufacturing nitrogen tetroxide
AssigneeVERO Biotech Inc.
InventorsDavid H. Fine, Thorsten Schmidt, Bryan Johnson, Alessandra Miranda, Edward Bromberg, Marjorie Nelson
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Abstract
Dinitrogen tetroxide (N2O4) is synthesized in an apparatus by the reaction of concentrated nitric acid with copper. Oxygen is applied as a carrier gas to convert NO to NO2, and water vapor is removed with a tube dryer. A molecular sieve is applied to reduce and remove impurities.
Claims7
A method for manufacturing nitrogen tetroxide comprising:
- mixing nitric acid and copper in a reaction vessel to form a reaction slurry;
- allowing gas to desorb from the reaction slurry;
- applying O2 as a carrier gas to convert NO that has desorbed from the reaction slurry to NO2;
- collecting the NO2;
- and
- allowing NO2 to dimerize to N2O4.
3 more elements
Dependencies are inferred from the claim text.