Salts in porous aluminosilicates. Part I. Sodium chlorite, chlorate, perchlorate, and azide

Abstract

Solid solutions of NaClO₄, NaClO₃, and NaClO₂+ NaCl in sodalite hydrate and of NaN₃ in cancrinite hydrate have been prepared and some properties examined. The isotherms of salt uptake are continuous functions of salt concentration in the synthesis mixtures. Thermogravimetric and differential thermal analyses of the oxo-salt sodalites and of the sodium azide–cancrinite have been made and interpreted. The kinetics of release of oxygen from the oxo-salt and of nitrogen from the azide solid solutions have been measured as functions of temperature, and, in the case of the oxo-salts, as functions of the oxo-salt concentrations. In the case of azide the curves of nitrogen evolution show an inflexion. The kinetics have been considered for the oxo-salts in terms of the probable reaction mechanisms.