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Conversion of nitrogen dioxide (NO2) to nitric oxide (NO)

  • US 7,914,743 B2
  • Filed: 01/28/2009
  • Issued: 03/29/2011
  • Est. Priority Date: 01/28/2008
  • Status: Active Grant
First Claim
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1. An apparatus for converting nitrogen dioxide to nitric oxide comprisinga receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent,wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide;

  • wherein the apparatus further comprises a NO2 scavenger selected from the group consisting of proline and diphenylamine.

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