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Kinetics of reduction of solid copper sulphate by hydrogen and carbon monoxide
Author(s) -
Van Kim Vo,
Habashi Fathi
Publication year - 1974
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450520311
Subject(s) - carbon monoxide , activation energy , copper , chemistry , hydrogen , exothermic reaction , mole fraction , atmospheric temperature range , kinetics , metal , reaction rate constant , inorganic chemistry , thermodynamics , catalysis , organic chemistry , physics , quantum mechanics
Abstract Cupric sulphate is reduced to metallic copper by H 2 at 225° to 400° with formation of Cu 2 SO 4 as an intermediate product. Under the present experimental conditions, the reduction followered the equation k = 1 — (1 — R) 1/3 , where R is the fraction reacted at time t and k is the velocity constant. The activation energy of the overall process in this temperature range lies between 15 and 17 Kcal/mole. Reduction by CO takes place at 400° to 650°C with formation of Cu 2 SO 4 and Cu 2 O and the activation energy in this temperature range lies between 24 and 29 Kcal/mole. Reduction in both cases is exothermic.