Method and apparatus for synthesizing anhydrous HNO/sub 3/

Patent · Mon Apr 16 23:00:00 EST 1984

OSTI ID:5838782

Coon, C L; Harrar, J E; McGuire, R R; Pearson, R K

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/.

• Assignee: The United States of America as represented by the United States Department of Energy
• Patent Number(s): US 4443308
• OSTI ID: 5838782
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ANHYDRIDES
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DISPERSIONS
ELECTROLYSIS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LYSIS
MIXTURES
NITRIC ACID
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REDOX POTENTIAL
SOLUTIONS
SYNTHESIS