Comparison of partial oxidation and steam-CO{sub 2} mixed reforming of CH{sub 4} to syngas on MgO-supported metals
- CSIRO, Menai (Australia)
Partial oxidation (POX) and steam-CO{sub 2} mixed reforming of CH{sub 4} on MgO-supported noble metals were investigated at high space velocity (5.5 x 10{sup 5} h{sup -1}). Temperature-programmed reaction (TPR) and isotope transient techniques were used to study the mechanism of POX and mixed reforming. TPR profiles of POX and mixed reforming showed similar ignition reaction behaviors, which implied that there are similar characteristics in their mechanisms. Steam reforming and CO{sub 2} reforming were found to start at the same time in mixed reforming. TPR and CH{sub 4}-D{sub 2} exchange experiments indicated that CH{sub 4} was activated at low temperature on Rh/MgO. POX showed much higher activity than mixed reforming although their C, H, and O atomic concentrations were the same at the beginning of each reaction. Mechanisms for POX and mixed reforming are suggested and the effect of oxygen-metal bond strength on activity is discussed. 31 refs., 11 figs., 3 tabs.
- OSTI ID:
- 263780
- Journal Information:
- Journal of Catalysis, Vol. 159, Issue 1; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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