La0.5Sr0.5Ni0.5Cu0.5O3催化剂上的CO氧化反应动力学

摘要

利用内循环无梯度反应器对钙钛矿型催化剂La0.5Sr0.5Ni0.5Cu0.5O3上CO氧化反应的动力学进行了研究，实验中通过分别测定CO和O2的分压对氧化反应速率的影响，得出了相应的曲线关系，通过对所有动力学数据用计算机进行多元线性回归，得出动力学方程r=2.26×108e-103000/8.314TPco0.5,根据动力学实验结果初步提出了CO在该催化剂上氧化机理模型.%The kinetics of CO oxid ation reaction on the perovskite catalysthas been investigated by means of inte rnal recycling and gradient less reactor. The rate of oxidation reaction re lated to the partial pressure of CO and O2 was measured and the curve relationship was obtained. After linear regressing for all kinetics data , we established a k inetics equation of CO oxidation reaction as r=2.26×108 e-103 0 00/8.314T Pco0.5 and proposed its reactive mechanism mod el on the perovskite catalyst.