摘要
In this work, Temperature-Programmed Reduction Processes of iron oxide and 12 other kinds of promoted iron oxides were investigated. It is suggested that the reduction activation energy can be expressed as a normal distribution. The distribution parameters were obtained by kinetic data fitting, which depends on the chemical and geometric characteristics of both the iron oxide and the promoter.
1 INTRODUCTIONTemperature-Programmed Reduction(TPR)is widely used in the study of the reduc-tion properties of catalysts[1-4].It does not depend on any specific property exceptthe reducibility of the catalyst.Parameters of the TPR profile,such as peaktemperature,peak area and peak width,are capable of providing certain indications onthe original state of the reduced species,the interaction effects between active compo-nents and promoter or supporter,and other reduction properties of the catalyst.
