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The oxidative coupling of methane(OCM)to ethylene over a perovskite titanate catalyst in a fixed bed reactor was studied experimentally and numerically.The two-dimensional steady state model accounted for separate energy equations for the gas and solid phases coupled with an experimental kinetic model.A lumped kinetic model containing four main species CH_4,O_2,CO_x(CO_2,CO),and C_2(C_2H_4 and C_2H_6)was used with a plug flow reactor model as well.The results from the model agreed with the experimental data.The model was used to analyze the influence of temperature and feed gas composition on the conversion and selectivity of the reactor performance.The analytical results indicate that the conversion decreases,whereas,C_2 selectivity increases by increasing gas hourly space velocity(GHSV)and the methane conversion also decreases by increasing the methane to oxygen ratio.
The oxidative coupling of methane (OCM) to ethylene over a perovskite titanate catalyst in a fixed bed reactor was studied experimentally and numerically. Two-dimensional steady state model accounted for separate energy equations for the gas and solid phases coupled with an experimental kinetic model . A lumped kinetic model containing four main species CH_4, O_2, CO_x (CO_2, CO), and C_2 (C_2H_4 and C_2H_6) was used with a plug flow reactor model as well. The results from the model agreed with the experimental data. model was used to analyze the influence of temperature and feed gas composition on the conversion and selectivity of the reactor performance. the analytical results indicate that the conversion decreases, but, C 2 selectivity increases by increasing gas hourly space velocity (GHSV) and the methane conversion also decreased by increasing the methane to oxygen ratio.