摘要
本文通过对纯铁氧化物及工业催化剂 B107进行程序升温还原(TPR)、程序升温氧化(TPO)以及高温变换反应动力学实验,认为铁基氧化物催化剂上进行变换反应是以 Redox 机理进行。Redox 过程中的控制步骤可能随温度和浓度变化而发生转移,并提出了适合控制步骤转移的动力学方程,对动力学实验数据回归得出了模拟参数。
Through the Temperature Programmed Reduction(TPR),Temperature Programmed Oxida- tion(TPO)and Shift Conversion kinetic measurements of the pure iron oxide and the commercial catalyst B107,it was shown that the shift reaction proceeds by a Redox cycle over the iron-based oxide catalysts.As the temperature or concentration changes,the controlling-step could be changed in the Redox cycle.The kinetic model developed is. r=[(kp_(CO)p_(H_2O))/(K/K_p+1/K)][1/(p_(H_2)+Kp_(H_2O))+1/(p_(CO_2)+(K_p/K)P_(CO))] which was found suitable to the case with the change of controlling-step.Parameters in the model were obtained by data fitting.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1990年第4期8-14,共7页
Chemical Reaction Engineering and Technology
