Abstract:

The catalytic combustion of the individual components and the mixtures of carbon monoxide, propylene and propane were investigated by using an integral microreactor under the conditions of no diffusion limitations. The adsorption properties of the reactants were probed by the temperature-programmed desorption (TPD) technique to distinguish the probable reaction mechanism. The Eley-Rideal kinetic models were selected to fit the experimental data of individual components conversion, and the parameters of the models were estimated by the partial least-square (PLS) method and simplex search optimization. The calculated conversion values of every component were in good agreement with the experimental data. Also, it was found that the conversions predicted by the individual component kinetic models were consistent with the experimental results of the mixture catalytic combustion.

Key words:

丙烯腈尾气, 催化燃烧, 程序升温脱附, 本征动力学

摘要：

消除内外扩散影响后, 在微型固定床积分反应器中开展了国产HPA型负载贵金属催化剂上一氧化碳、丙烯和丙烷单组分及其三组分混合物催化燃烧的实验研究。采用程序升温脱附（TPD）手段考察了反应物在催化剂上的吸附脱附情况, 据此推测可能的反应机理, 建立了单组分催化燃烧的Eley-Rideal速率模型。运用最小二乘估计和单纯形优化搜索方法对模型参数进行了估值, 反应物转化率的模型计算值与实验值吻合良好。同时, 将所得单组分动力学模型叠加用于预测多组分催化燃烧时, 转化率的计算值与多组分实验结果相容。

关键词:

丙烯腈尾气, 催化燃烧, 程序升温脱附, 本征动力学