DEPENDENCE OF ZINC-OXIDE REDUCTION RATE ON THE CO CONCENTRATION IN COCO2 MIXTURES/

A combined experimental and theoretical approach presents the kinetics of ZnO reduction as a function of CO content and temperature. The equ ation that gives the dependence between these variables is developed. The rate constant values are verified with the topochemical model. The Arrhenius activation energy value of 60.15 kcal mol(-1) identifies th e reaction as being chemically controlled. The study of the temperatur e effect is conducted within the 1183-1497 K temperature range, and th e CO concentration is maintained at selected constant values between 1 7% and 100% CO.