Acta Phys. -Chim. Sin. ›› 1991, Vol. 7 ›› Issue (01): 125-128.doi: 10.3866/PKU.WHXB19910123

• Note • Previous Articles    

Measurement of the Activation Energy of Oxygen Offering and Reproducing on Pt/HM,Pd/HM Catalysts

Zheng Xiao-Ming; Gu Yue-Peng; Jin Song-Shou   

  1. Department of Chemistry, Hangzhou University
  • Received:1989-07-24 Revised:1990-09-27 Published:1991-02-15
  • Contact: Zheng Xiao-Ming

Abstract: Pulse-reacting experiments of gaseous CO with catalyst surface oxygen and gaseous O_2 with reduced catalyst surface were designed in order to measure the activation energy of oxygen offering and the activation energy of oxygen reproducing on the catalyst surface. By the separate measurement of these two kinds of activation energy, the difference in behavior of Pt/HM and Pd/HM catalysts was explained.
The activation energy of oxygen offering on Pt/HM is lower than that on Pd/HM, but the oxygen reproducing activation energy on Pt/HM is higher than that on Pd/HM.

Key words: Activation energy, Catalyst Oxidation, Pt, Pd