A new empirical kinetics of novel catalyst for high temperature water-gas shift (HT-WGS) at the pressure of 2.5 MPa was developed in the study. Using gradientless reactor a set of kinetics data for catalyst in form of 5 x 5 mm tablet operating at diffusion regime was collected, studied and fitted to classic power-law kinetic equation. Simple power-law equation fits the experimental data with sufficient accuracy. The reaction with respect to CO is close to first order and the apparent activation energy of ca. 51.5 kJ mol(-1). The equation is believed to be applicable to modeling of HT-WGS at the temperature in the range of 300-400 degrees C and the pressure ca. 2.5 MPa corresponding to synthesis gas production for ammonia and methanol plants. (c) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.