Partial oxidation of methane to synthesis gas using a highly selective catalyst based on NdCaCoO4 has been studied, and rate constants have been determined. To determine the kinetic constants in a thin bed of the catalyst with a mass of 0.1 g, a model of isothermal syngas production process has been implemented and objective functions and computational algorithm to minimize the mismatch criterion between calculated and experimental data have been selected. The oxidative methane reforming process has been modeled in the isothermal and autothermal modes. The calculation results for the isothermal mode have been found to agree with experimental data.
The aromatization reaction of a propane-rich propane–butane mixture on an HZSM-5 catalyst modified with chromium and zinc ions has been studied in a flow reactor at temperatures in the range of 530–640°C. Kinetic modeling of the process as a heterogeneous catalytic reaction was performed using the experimental data obtained under conditions of unfeasibility of simultaneous maintenance of temperature and space time in each kinetic experiment. The approach proposed has made it possible to reveal the scheme of conversion of the propane–butane reactants to aromatic hydrocarbons, develop a kinetic model of the process, and find its parameters to ensure an adequate mathematical description of the experimental data.