3.6 Verification of the reaction kinetics model
From Equations (11) and (13), the calculated values of the observed rate constant expressed for can be obtained:
From Equations (7) and (11), the experimental values of can also be obtained:
A comparison of the calculated and experimental values of at different temperatures and different sulfuric acid concentrations is provided in Table S1. These two values are very close. Furthermore, the effectiveness of the kinetic model in predicting the nitration of CB was verified by a series of experiments, as shown in Figure 10 . The mass fraction of sulfuric acid was changed to 93%, and the conversion of CB was investigated at different temperatures. Under both the conditions of a short residence time (low conversion) and a long residence time (high conversion), the experimental results of CB conversion are in good agreement with the values predicted by the model, indicating that even if the concentration of sulfuric acid changes, the model can still predict the kinetic parameters for CB nitration.