This study investigated the kinetics of a thermal dechlorination and oxidation of neodymium oxychloride (NdOCl) by using a non-isothermal thermogravimetric (TG) analysis under various oxygen partial pressures. The results of the isoconversional analysis of the TG data suggests that the dechlorination and oxidation of NdOCl follows a single step reaction and the observed activation energy was determined as 228.3 +/-6.1 kJmol(-1). A kinetic rate equation was derived for a conversion of the NdOCl into Nd2O3 with a power law model,f(alpha) = 2/3 alpha(-1/2). The oxygen power dependency and the pre-exponential factor were determined as 0.315 and 3.55 x 10(5) s(-1) Pa-0.315, respectively. (c) 2007 Elsevier B.V. All rights reserved.