CO在Cu-Mn催化剂上的催化氧化本征反应动力学

Intrinsic Reaction Kinetics of Catalytic Oxidation of CO on Cu-Mn Catalyst Bed

采用共沉淀法制备了用于低温催化氧化脱除气体中CO的Cu—Mn催化剂．通过x射线衍射和扫描电镜对该催化剂进行：分析发现：非晶态催化剂在室温下对CO具有良好的催化氧化活性．同时，在50～80℃范围内，测定了CO在所制备的Cu-Mn催化剂床层上的催化反应等温线，研究了CO在Cu-Mn催化剂床层上的催化氧化本征反应动力学．结果表明：在消除内外扩散的条件下，CO在Cu—Mn催化剂床层上的本征反应是一个表面反应控制的一级催化反应，反应的活化能为43．0kJ／t001．

Cu-Mn catalyst suitable for the CO removal from gas via low-temperature catalytic oxidation was prepared by means of coprecipitation. The product was then characterized using XRD and SEM. It is found that the amorphous catalyst is of high catalytic activity for CO oxidation at room temperature. Moreover, the catalytic isotherm of CO oxidation on the Cu-Mn catalyst bed at 50 - 80℃ was obtained, and the corresponding intrinsic reaction kinetics was investigated. Experimental results show that the surface reaction on the catalyst bed plays the most important role in the control of reaction rate, and that, when eliminating the internal and external diffusion, the catalytic oxidation of CO on the Cu-Mn catalyst bed is a first-order reaction with an activation energy of 43.0 kJ/mol.