在自制钒催化剂上SO_2氧化反应动力学模型识别—(Ⅱ)机理模型的确定

Distinction of Kinetie Model of SO_2 Oxidation on the Laboratory-Vanadium Catalysis (Ⅱ)Determination of mechanism model

前文报道了采用 Yang—Hongen 方法,从四种机理假设建立了十三个竞争功力学方程。本文则重点解决从上述竞争方程中识别出能适应于以云南硅藻土为载体的钒催化剂上 SO_2氧化机理的本征动力学方程。我们利用线性回归分析方法,用15组实验数据。从十三个竞争方程中,筛选出较为理想的动力学方程,并用6组实验数据进行验证,最后确定了最佳机理模型方程为:r=(KB(Po_2~1/2-P_(so3)/KP_(so2)/(1+(k_BP_(so3)/k_BP_(so2)^(1/2)+k_PP_(so3)^(1/2))

In Part (Ⅰ) of this paper,we reported that 13 competitive modle equations based on.the Yang-Hougen Method were established.In part (Ⅱ) of this paper,it is distinguished that the best one which can be suitable for our catalysis from above equations.15 groups data for imitating and 6 groups for testing and verifying then.the best equation is decided by the Linear Regression Analysis Method: ■