Method and apparatus for synthesizing anhydrous HNO.sub.3

Patent · 01 January 1984

OSTI ID:864963

Coon, Clifford L ^[1]; Harrar, Jackson E ^[2]; Pearson, Richard K ^[3]; McGuire, Raymond R ^[4]

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1. Fremont, CA
2. Castro Valley, CA
3. Pleasanton, CA
4. Brentwood, CA

A method and apparatus for electrochemically synthesizing anhydrous HNO.sub.3 from an aqueous solution of HNO.sub.3 includes oxidizing a solution of N.sub.2 O.sub.4 /aqueous HNO.sub.3 at an anode, while maintaining a controlled potential between the N.sub.2 O.sub.4 /aqueous HNO.sub.3 solution and the anode. A potential of about 1.80V vs. SCE is preferred. Anhydrous or aqueous HNO.sub.3 may be disposed at the cathode within the electrochemical cell. Aqueous HNO.sub.3 having a water content of up to about 12% by weight is utilized to synthesize anhydrous HNO.sub.3.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States Department (Washington, DC)
• Patent Number(s): US 4443308
• OSTI ID: 864963
• Country of Publication: United States
• Language: English

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