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Title: Method and apparatus for synthesizing anhydrous HNO.sub.3

Abstract

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.

Inventors:
 [1];  [2];  [3];  [4]
+ Show Inventor Affiliations
  1. Fremont, CA
  2. Castro Valley, CA
  3. Pleasanton, CA
  4. Brentwood, CA
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
OSTI Identifier:
864963
Patent Number(s):
4443308
Assignee:
United States of America as represented by United States Department (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS
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DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; synthesizing; anhydrous; hno; electrochemically; aqueous; solution; oxidizing; anode; maintaining; controlled; potential; 80v; vs; sce; preferred; disposed; cathode; electrochemical; cell; water; content; 12; weight; utilized; synthesize; aqueous hno; electrochemical cell; aqueous solution; water content; anhydrous hno; controlled potential; electrochemically synthesizing; synthesizing anhydrous; /205/204/

Citation Formats

Coon, Clifford L, Harrar, Jackson E, Pearson, Richard K, and McGuire, Raymond R. Method and apparatus for synthesizing anhydrous HNO.sub.3. United States: N. p., 1984. Web.
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Coon, Clifford L, Harrar, Jackson E, Pearson, Richard K, & McGuire, Raymond R. Method and apparatus for synthesizing anhydrous HNO.sub.3. United States.
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Coon, Clifford L, Harrar, Jackson E, Pearson, Richard K, and McGuire, Raymond R. Sun . "Method and apparatus for synthesizing anhydrous HNO.sub.3". United States. https://www.osti.gov/servlets/purl/864963.
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@article{osti_864963,
title = {Method and apparatus for synthesizing anhydrous HNO.sub.3},
author = {Coon, Clifford L and Harrar, Jackson E and Pearson, Richard K and McGuire, Raymond R},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}
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