Reaction kinetics of hydrogenation of m-nitrotrifluorotoluene over TiO_2 supported Pd-Fe catalyst

The hydrogenation of m-nitrotrifluorotoluene over TiO2 supported Pd-Fe catalyst was studied under atmospheric pressure.The influences of reaction temperature and catalyst mass concentration on the hydrogenation reaction kinetics were investigated.The reaction kinetics equation was built by fitting the experimental data.The results show that m-nitrotrifluorotoluene can be converted to 99.2% under the condition of initial m-nitrotrifluorotoluene concentration of 0.125 mol/L,catalyst mass concentration of 0.32 g/L,hydrogen pressure of 0.1 MPa,at 323.2 K and for 2.5 h.Based on these experimental results,the reaction rate is first-order for the concentration of m-nitrotrifluorotoluene and 0.464 order for catalyst mass concentration,and the activation energy for hydrogenation is 22 728.0 J/mol.The calculated values by the kinetics equation are in good agreement with the experimental ones.