ABSTRACT
In contrast to onium salts considered above, the equilibrium formation o f acids and bases is impossible for metal salts. In this case, all o f the pathways o f thermal decomposition are determined by thermal transformations o f anions. Only at the decomposition of crystal hydrates is the hydrolysis o f a salt with separation of oxide or hydroxide o f metal and corresponding acid possible. This is observed for some heavy metal perchlorates and nitrates, but for the majority o f salts such a pathway is not realized. Crystal water is usually lost on heating long before the beginning o f salt decomposition. Thus, the kinetic regularities o f decomposition of metal perchlorates and nitrates differed considerably from the regularities o f decomposition of onium salts and they are determined by other factors. The detailed quantitative studies o f the kinetic regularities o f decomposition o f these salts are almost absent. The studies were carried out mainly by the D T A method without analysis o f the kinetic law and rate constants. Here, we w i l l not consider the details o f these works. The detailed review o f metal perchlorates is given in [16.1]. We wi l l consider in a generalized form only general regularities, which allow one to analyze the peculiarities o f thermal decomposition and combustion of mixtures containing such compounds.
