Kinetics of Thermal Decomposition of Copper (II) Sulfate and Copper (II) Oxysulfate.
NTIS: PB 210 170 :21 pages
Thermal decomposition of copper (II) sulfate (cuso4) and copper (II) oxysulfate (cuo.Cuso4) are important steps in the overall oxidative roasting of covellite (cus) and chalcocite (cu2s). Nonisothermal thermogravimetric techniques were used to investigate the decomposition reactions in flowing n2 and air. Thermal decomposition of cuso4 and cuo.Cuso4 followed "linear" kinetics with an apparent activation energy of 55+/-2 and 66+/-3 kcal per mole decomposed, respectively. These apparent activation energies comply with those previously reported when isothermal kinetic techniques were used. The addition of oxygen decreased the rate of decomposition, while small amounts of iron which were admixed with cuo.Cuso4 did not have a significant effect. Neither oxygen nor iron had any appreciable effect on the apparent activation energy of the decomposition reaction.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 210 170