Preparation amd thermal decomposition of basic copper(II) sulfates

The compositions and thermal behavior of basic copper(II) sulfates, which were prepared by adding sodium hydroxide to copper(II) sulfate in solutions, were examined extensively by means of chemical analysis, IR spectroscopy, X-ray diffractometry, and thermal analysis. Synthetic brochantite and posnjakite were obtained by the methods used in the present study. The thermal decomposition processes of the compounds prepared to Cu2O were characterized by TG and DSC or DTA, as well as other physicochemical techniques.