Abstract
Abstract The intrinsic kinetics of oxidative dehydrogenation of propane with CO 2 has been investigated over Cr/MSU-1 catalyst in a fixed bed reactor. Without limitations of both internal and external diffusion, intrinsic kinetic data were obtained under the following conditions: 490-530 °C, space velocity of 3600-6000 mL·h −1·g −1 and 3/1 molar ratio for CO 2/C 3H 8 under normal pressure. Based on Langmuir-Hinshelwood mechanism, the kinetic models were established, and they were validated by statistical analysis. The parameters were estimated using Simplex Method combined with Universal Global Optimization Algorithm. The model, taking the surface reaction process as the rate-determining step, is the best one in agreement with the experimental data.
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