惰性载气对TPR动力学的影响

The Influence of Inert Carrier Gasses on TPR Kinetics

对于一些气-固相反应,同样条件下的动力学行为随惰性载气不同有所差异。为从实验上进一步揭示这一问题,并从理论上给出圆满的解释,我们对程序升温还原(TPR)过程进行了系统的考察,同时研究了不同惰性载气条件下铜氧化物还原反应的动力学问题,结合有关反应机理和统计热力学的概念,讨论惰性载气对气-固相还原反应动力学的影响。

By the study of temperature programmed reduction (TPR) for some copper oxides, it is shown that when the gasses used as inert carrier are different, there are some differences in kinetic character of the reduction reaction although other conditions are the same. In this paper, the TPR curves of some copper oxides, obtained by using of N2 and He respectively, have been analyzed qualitatively and quantitatively. Combining the mechanism of the reduction and statisitical thermodynamics with the results metioned above , it is supposed that the main reason of this phenomenon is that the molecular diameter of different inert carrier gasses are different.