The global reaction rates for industrial high-temperature shift reaction catalyst WB-2 of size φ9 × 7 mm have been investigated in an internal recycle gradientless reactor at pressures of 7 × 105 Pa (gauge) and 13 × 105 Pa(gauge). The pore-size distribution and the tortuosity factor of the catalyst have been measured. In this part

by using the intrinsic kinetic equation obtained at atmospheric pressure

the numerical solutions of the global rates have been computed according to the simplified multicomponent diffusion model presented in the second part of this paper

and have been compared with the experimentally observed values. The average absolute deviations between the calculated effectiveness factors by

the simplified multicompohent modeland thekey-component model

and the experimental values

are 11.72% and 11.88%

respectively. Therefore

the results of comparison are satisfaetory. It is proposed therefrom in this part

that the experiments of global rates under pressure are not necessary to investigate kinetic behavior under pressure for reactions for which operating pressures are not high such as the high-temperature shift reaction. The effectiveness factors and global reaction rates under pressure can be obtained by using the mathematical model of effectiveness factors presented in this paper on the basis of the intrinsic kinetic equation obtained at atmospheric pressure.