Study on Catalysis of Cu-Fe Metal Composite Oxides to Thermal Decomposition Behavior of Bluestone

Abstract

<em>Nano-CuFe₂O₄catalysts with different Cu/Fe molar ratios (Cu_nFe_mO_(n+1.5m)) were prepared by hydrothermal method. The thermal decomposition performance of Cu_nFe_mO_(n+1.5m)on CuSO₄ were determined with TG-DSC method to evaluate its catalytic activity and the roasted product was characterized by XRD. The results showed that Cu_nFe_mO_(n+1.5m) had superior catalytic properties and efficiency to CuSO₄ crystals in 1:1 Cu/Fe molar ratios and 4% Cu_nFe_mO_(n+1.5m) (in mass) contained. Under these conditions, the high and low temperature decomposition peaks of CuSO₄ were overlapped. The temperature and heat of decomposition were decreased by 29.5 °C and 112.1 J/g, respectively. The results were also confirmed by roasting experiments of CuSO₄·5H₂O in muffle furnace in the presence of Cu_nFe_mO_(n+1.5m) as catalyst at the same temperature.</em>