engleski

Synthesis, characterization and thermal decomposition of double sulfates of trivalent Al and Fe with di- or triethanolammonium monovalent cations

By evaporation of an aqueous mixture of M(III) diethanolammonium sulfate or triethanolamonium sulphate in the presence of sulphuric acid, double sulfates of Al(III) and Fe(III) were obtained. The stoichiometries of the compounds obtained were determined by means of elemental and TG analyses. From the X-ray powder diffractin paterns it was concluded that the investigated compounds have different crystal structures. From the TG curves it was established that they lose water at low temperature and also that the anhydros double salts decompose at 523 K.

double sulphates of Al(III) and Fe(III) with di-or triethanolammonium ; synthesis ; thermal studies

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