Electrochemistry of Hydrazine-Hydrazine Azide Mixtures.
Final scientific rept. 1 Mar 72-30 Jun 76,
UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CONN
Pagination or Media Count:
This document constitutes the final report under Contract F44620-72-C-0049, Electrochemistry of Hydrazine-Hydrazine Azide Mixtures. Investigations into the nature of hydrazine and hydrazine derivatives were carried out with the objective of providing solvents for electrochemical applications which exhibit large potential ranges without sacrificing solubility levels of the reactants. The activity of the azide ion was also examined since its theoretical cell potential is high. The experimental investigations included the development of methods for the purification of hydrazine and the determination of the basic electrochemical properties of hydrazine. The effect of impurities on the conductivity of hydrazine was also determined as a function of water and carbon dioxide content. Electrode polarization measurements on platinum in the presence of hydrazine indicates that the azide ion is not electrochemically active and the electrode processes are due to the solvent itself. The basic cathodic reaction is the reduction of the hydrazonium ion to hydrogen and the anodic reaction is the oxidation of hydrazine to the hydrazonium ion and nitrogen. Studies in monomethylhydrazine and unsymmetrical dimethyhydrazine indicated an improved anodic overpotential no nitrogen formation however the cathodic reaction was identical to hydrazine. The program direction was changed to the study of metal-metal ion couples in hydrazine and it was found that the magnesium-magnesium ion couple was reversible and that magnesium and aluminum metals exhibit a high overpotential for solvent decomposition.
- Physical Chemistry