摘要
提出了一个多相催化反应中可逆吸附物种及不可逆吸附物种同时参与反应的动态分析解析解新模型。在同时考虑轴向扩散、不可逆物种吸附速率以及可逆物种和不可逆物种表面反应速率的情况下,通过解析解对实验曲线进行拟合计算,即可求出各反应的速率常数。在不同简化条件下,由解析解可自然得到稳态方程、不可逆物种表面反应流出曲线解析解以及迎头吸附流出曲线解析解等。通过理论计算,考察了各速率参数对流出曲线的影响。
A new analytical solution model of dynamic method was developed to study the effect of reversible and irreversible adsorption on the heterogeneous catalytic reaction. The axial dispersion coefficient E, the surface reaction rate constants of reversibly and irreversibly adsorbed species kr and ki, and the reversible adsorption equilibrium constant K could be obtained by fitting the experimental data with the analytical solution.The equations for the steady state reaction, the effluent curves of the surface reaction of irreversible species and the breakthrough adsorption could be derived from the general analytical solution under simplified conditions. The influence of each rate constant on the effluent curves was investigated by theoretical calculation.
基金
国家自然科学基金
