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用气相色谱脉冲技术研究了在负载型铂催化剂上CO选择氧化过程的反应机理,获知了CO氧化和H_2氧化两个平行竞争反应各自的反应历程和CO氧化具有高选择性的原因,并推导出动力学方程。采用最小容积准则的序贯实验设计法安排了动力学实验点。应用Gauss-Newton法对加权非线性最小二乘形式的目标函数进行了参数优化。对模型的残差分析证实了机理研究得到的动力学方程是合适的。
The reaction mechanism of selective oxidation of CO over supported platinum catalysts was studied by gas chromatography pulse. The reaction process of CO oxidation and H 2 oxidation and the reasons for the high selectivity of CO oxidation were obtained. Mechanical equations. Kinetic experiment points were arranged using the sequential experimental design method of minimum volume criterion. Gauss-Newton method is used to optimize the objective function of weighted nonlinear least-squares form. Residuals analysis of the model confirmed that the kinetic equation obtained by the mechanism study is suitable.