Kinetic study of chlorination of niobium (V) oxide with chlorine and carbon monoxide

Kinetic study of the chlorination of niobium oxide was carried out in a fix ed-bed reactor under temperatures from 800 to 1000 degrees C and normal pre ssure. Thermodynamic simulation was performed to analyze the reaction syste m. Reactants introduced were niobium (V) oxide powder and gaseous chlorine with carbon monoxide as reductant. The chlorination products were all in ga seous phase under the temperatures and pressure studied. Reaction was of no n-catalytic gas-solid nature and experimental data fitted the shrinking cor e model. Rate expression and kinetic data were determined. (C) 1999 Elsevie r Science S.A. All rights reserved.