A simple kinetic model for the standard NH₃-SCR reaction by Cu-ZSM-5 catalysts has been developed by assuming three reaction steps: NH₃ adsorption (desorption), reactions of adsorbed NH₃ with O₂ (NH₃ oxidation) and NO (NH₃-SCR). The model is based on Arrhenius parameters for NH₃-SCR and NH₃ oxidation by a powder catalyst, combined with models for heat and mass transport and parameters of monolithic catalysts. The model is validated with the experimental results, not included in the estimation of the model, for NH₃-SCR by monolithic catalysts with different parameters (catalyst loading and cell density). NOx removal from diesel exhaust, generated by engine bench, was also carried out by using monolithic Cu-ZSM-5 and Cu-AFX catalysts. The results suggest the poisoning effect of hydrocarbons in the exhaust emissions on NOx conversion is more significant for Cu-ZSM-5 than Cu-AFX.

通过假设三个反应步骤，开发了一个简单的动力学模型，用于标准的Cu-ZSM-5催化剂进行的NH ₃ -SCR反应：NH ₃吸附（解吸），吸附的NH ₃与O _2的反应（NH ₃氧化）和NO （NH ₃ -SCR）。该模型基于粉末催化剂对NH ₃ -SCR和NH ₃氧化的Arrhenius参数，以及传热和传质模型以及整体催化剂的参数。使用NH ₃的实验结果（未包括在模型估计中）对模型进行了验证-SCR通过具有不同参数（催化剂负载和电池密度）的整体催化剂进行。通过使用整体式Cu-ZSM-5和Cu-AFX催化剂还可以去除由发动机工作台产生的柴油机废气中的NOx。结果表明，Cu-ZSM-5的废气排放中碳氢化合物对NOx转化的中毒作用比Cu-AFX更为明显。