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Mechanism of thermal decomposition of potassium permanganate in the solid phase

1969; Elsevier BV; Volume: 30; Issue: 5 Linguagem: Inglês

10.1016/0022-3697(69)90379-5

1879-2553

В. В. Болдырев,

Energetic Materials and Combustion

This study of the mechanism of thermal decomposition of potassium permanganate illustrates the possibility of applying the methods and conceptions of solid-state physics in solving problems related to the investigation of chemical reactions in solids. It was found that the elementary stages of the thermal decomposition of permanganate, which is a semiconductor of the n-type, are associated with electron transition from one anion site to another. This viewpoint provides an explanation for the mechanism of the action of catalysic additives and the influence of the solid products formed in the course of the reaction of thermal decomposition, as well as for the mechanism whereby the rate of thermal decomposition of permanganate is affected by preliminary irradiation. The latter is interpreted as the result of the concurrent catalytic action of manganese dioxide and inhibiting action of manganate formed on thermolysis and radiolysis of permanganate. The physical processes occurring during the chemical reactions under investigation are discussed.