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Kinetics of Thermal Decomposition of Copper (II) Sulfate and Copper (II) Oxysulfate.

Authors
Shah-ID; Khalafalla-SE
Source
NTIS: PB 210 170 :21 pages
Link
NIOSHTIC No.
10008879
Abstract
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.
Publication Date
19720101
Document Type
IH; Report of Investigation;
Fiscal Year
1972
NTIS Accession No.
PB-210170
NTIS Price
A03
Identifying No.
RI 7638
NIOSH Division
TCRC;
Source Name
NTIS: PB 210 170
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