ABSTRACT
Substitution of the ammonium ion in the oxidizer for hydrazinium or hydroxylammonium ions results in an increase o f the heat o f combustion and energetic efficiency o f a composite, but in contrast to the N H 4 + ion, they are capable o f thermal transformations at a considerably higher rate by themselves and, in a number o f cases, just an insufficiently high thermal stability o f the salts o f hydrazinium and hydroxylammonium hampers their commercial use. Since thermal transformations with participation of N 2 H 5 +
and N H 4 0 + ions are rather complex and in the corresponding nitrates and perchlorates these reactions are imposed on the processes considered above with participation o f nitric and perchloric acids, it is appropriate to take into consideration such salts, in which transformations of cations and corresponding bases are the only possible thermal transformations and the acids forming them are thermally stable. The salts o f hydrazinium are melted at quite low temperatures and the reaction o f their decomposition is usually studied in the liquid phase. Thermal decomposition of all salts o f hydrazinium proceeds through their preliminary dissociation into hydrazine and acid. The rate o f decomposition is determined by the concentrations and the rate constants o f transformation of these products, and, in the majority o f cases, thermal transformations of hydrazine are the determining stages.
