Copper Ferrite has been prepared by solid state synthesis of milled mixtures of copper basic carbonate [Cu(OH)2 x CuCO3] and iron (II) oxalate dihydrate [FeC2O4 x 2H2O]. The reaction mechanism has been studied by simultaneous TG/DSC analysis: the different steps of the mass loss process have been individuated along with the relevant enthalpy terms starting from both physi- cal and mechanically activated mixtures. CuFe2O4 has been synthesized by annealing the mechanically activated mixture at 750–800 °C while no pure CuFe2O4 is obtained by annealing the physical mixture at temperatures as high as 1100 °C. CuFe2O4 has been characterized as concerns the molar het capacity, the tetragonal–cubic transition enthalpy and the Curie point.
Solid state synthesis of CuFe2O4 from Cu(OH)2 x CuCO3– 4FeC2O4 x 2H2O mixtures: mechanism of reaction and thermal characterization of CuFe2O4
BERBENNI, VITTORIO;MARINI, AMEDEO;MILANESE, CHIARA;BRUNI, GIOVANNA
2010-01-01
Abstract
Copper Ferrite has been prepared by solid state synthesis of milled mixtures of copper basic carbonate [Cu(OH)2 x CuCO3] and iron (II) oxalate dihydrate [FeC2O4 x 2H2O]. The reaction mechanism has been studied by simultaneous TG/DSC analysis: the different steps of the mass loss process have been individuated along with the relevant enthalpy terms starting from both physi- cal and mechanically activated mixtures. CuFe2O4 has been synthesized by annealing the mechanically activated mixture at 750–800 °C while no pure CuFe2O4 is obtained by annealing the physical mixture at temperatures as high as 1100 °C. CuFe2O4 has been characterized as concerns the molar het capacity, the tetragonal–cubic transition enthalpy and the Curie point.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
