<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Electrochemical or chemical reduction of nitric acid is a well studied area in literature due to the importance of the products formed. The present work focuses on the effect of conventional cathode materials including PbO2, amalgamated Cu, graphite, Pb, Pt and a modified electrode material Ti/TiO2 on the reduction of nitric acid. Ammonia and hydroxylamine are the main products which are estimated by conventional titration methods. Other conditions being similar, the product distribution varies quite drastically as a function of the electrode material and Ti/TiO2 is found to favor a higher ratio of hydroxylamine to ammonia formation compared to other electrodes. The conditions have also been optimized based on the maximum yield of the product.</abstract>

Electrochemical or chemical reduction of nitric acid is a well studied area in literature due to the importance of the products formed. The present work focuses on the effect of conventional cathode materials including PbO2, amalgamated Cu, graphite, Pb, Pt and a modified electrode material Ti/TiO2 on the reduction of nitric acid. Ammonia and hydroxylamine are the main products which are estimated by conventional titration methods. Other conditions being similar, the product distribution varies quite drastically as a function of the electrode material and Ti/TiO2 is found to favor a higher ratio of hydroxylamine to ammonia formation compared to other electrodes. The conditions have also been optimized based on the maximum yield of the product.

The effect of cathode materials on the electrochemical reduction of nitric acid

Central Electrochemical Research Institute, Karaikudi 630006, Tamilnadu, India

Polish Journal of Chemical Technology

{"article-title":"The effect of cathode materials on the electrochemical reduction of nitric acid"}

Electrochemical or chemical reduction of nitric acid is a well studied area in literature due to the importance of the products formed. The present work...

The effect of cathode materials on the electrochemical reduction of nitric acid

Published Online: Apr 08, 2010

Page range: 35 - 37

DOI: https://doi.org/10.2478/v10026-010-0007-0

Keywords
Electroreduction, Nitric acid, Hydroxylamine, Ammonia, Conventional and modified cathodes, Mechanism

This content is open access.

The effect of cathode materials on the electrochemical reduction of nitric acid

Published Online: Apr 08, 2010

Page range: 35 - 37

DOI: https://doi.org/10.2478/v10026-010-0007-0

KeywordsElectroreduction, Nitric acid, Hydroxylamine, Ammonia, Conventional and modified cathodes, Mechanism

This content is open access.

Keywords
Electroreduction, Nitric acid, Hydroxylamine, Ammonia, Conventional and modified cathodes, Mechanism