Large-scale production of anhydrous nitric acid and nitric acid solutions of dinitrogen pentoxide
Abstract
A method and apparatus are disclosed for a large scale, electrochemical production of anhydrous nitric acid and N.sub.2 O.sub.5. The method includes oxidizing a solution of N.sub.2 O.sub.4 /aqueous-HNO.sub.3 at the anode, while reducing aqueous HNO.sub.3 at the cathode, in a flow electrolyzer constructed of special materials. N.sub.2 O.sub.4 is produced at the cathode and may be separated and recycled as a feedstock for use in the anolyte. The process is controlled by regulating the electrolysis current until the desired products are obtained. The chemical compositions of the anolyte and catholyte are monitored by measurement of the solution density and the concentrations of N.sub.2 O.sub.4.
- Inventors:
-
- Castro Valley, CA
- Oakland, CA
- Livermore, CA
- Brentwood, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 873598
- Patent Number(s):
- 6200456
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- large-scale; production; anhydrous; nitric; acid; solutions; dinitrogen; pentoxide; method; apparatus; disclosed; scale; electrochemical; oxidizing; solution; aqueous-hno; anode; reducing; aqueous; hno; cathode; flow; electrolyzer; constructed; special; materials; produced; separated; recycled; feedstock; anolyte; process; controlled; regulating; electrolysis; current; desired; products; obtained; chemical; compositions; catholyte; monitored; measurement; density; concentrations; chemical compositions; aqueous hno; acid solutions; chemical composition; acid solution; nitric acid; desired product; reducing aqueous; chemical product; anhydrous nitric; /205/
Citation Formats
Harrar, Jackson E, Quong, Roland, Rigdon, Lester P, and McGuire, Raymond R. Large-scale production of anhydrous nitric acid and nitric acid solutions of dinitrogen pentoxide. United States: N. p., 2001.
Web.
Harrar, Jackson E, Quong, Roland, Rigdon, Lester P, & McGuire, Raymond R. Large-scale production of anhydrous nitric acid and nitric acid solutions of dinitrogen pentoxide. United States.
Harrar, Jackson E, Quong, Roland, Rigdon, Lester P, and McGuire, Raymond R. Mon .
"Large-scale production of anhydrous nitric acid and nitric acid solutions of dinitrogen pentoxide". United States. https://www.osti.gov/servlets/purl/873598.
@article{osti_873598,
title = {Large-scale production of anhydrous nitric acid and nitric acid solutions of dinitrogen pentoxide},
author = {Harrar, Jackson E and Quong, Roland and Rigdon, Lester P and McGuire, Raymond R},
abstractNote = {A method and apparatus are disclosed for a large scale, electrochemical production of anhydrous nitric acid and N.sub.2 O.sub.5. The method includes oxidizing a solution of N.sub.2 O.sub.4 /aqueous-HNO.sub.3 at the anode, while reducing aqueous HNO.sub.3 at the cathode, in a flow electrolyzer constructed of special materials. N.sub.2 O.sub.4 is produced at the cathode and may be separated and recycled as a feedstock for use in the anolyte. The process is controlled by regulating the electrolysis current until the desired products are obtained. The chemical compositions of the anolyte and catholyte are monitored by measurement of the solution density and the concentrations of N.sub.2 O.sub.4.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}
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Works referenced in this record:
Electrosynthesis of N 2 O 5 by Controlled‐Potential Oxidation of N 2 O 4 in Anhydrous HNO 3
journal, January 1983
- Harrar, J. E.; Pearson, R. K.
- Journal of The Electrochemical Society, Vol. 130, Issue 1