Physico-chemical characterization of thermal decomposition course in zinc nitrate-copper nitrate hexahydrates

摘要

This study reports experimental investigations by non-isothermal TG/DSC analysis of Zn(NO3)(2)center dot 4H(2)O, Cu(NO3)(2)center dot 4H(2)O and their mixtures of known compositions in the temperature range 30-1200 degrees C. Solid/liquid transitions in the sealed samples of the hexahydrate salts and their mixtures were also studied by DSC in the temperature range 0-60 degrees C. The mixture with composition 0.85Zn(NO3)(2)center dot 6H(2)O+0.15Cu(NO3)(2)center dot 6H(2)O showed single melting peak at 29 degrees C. This mixture was chosen for detailed studies. Melting temperature and heat of fusion of single salt hexahydrates and of the mixture were calculated from DSC endotherms.