【摘要】 应用变量代换、摄动分析和级数展开的方法， 求解了颗粒催化剂内二级反应的反应扩散方程， 得到了催化剂颗粒内的反应物浓度分布的级数近似解， 并由此得到了效率因子表达式， 与数值解比较表明计算精度较高更多还原

【Abstract】 The second order reaction-diffusion equation for porous catalyst is solved with the method of variable transformation-perturbation analysis-series expansion to obtain the reactant concentration profile in catalyst An approximate expression of the effectiveness factor is derived Compared with the numerical solution, the approximate expression is satisfactory更多还原