Rh/CeO2-ZrO2 catalysts with various CeO2/ZrO2 ratios have been applied to H2 production from ethanol steam reforming at low temperatures. The catalysts all deactivated with time on stream (TOS) at 350°C. The addition of 0.5% K has a beneficial effect on catalyst stability, while 5% K has a negative effect on catalytic activity. The catalyst could be regenerated considerably even at ambient temperature and could recover its initial activity after regeneration above 200°C with 1% O2. The results are most consistent with catalyst deactivation due to carbonaceous deposition on the catalyst.
Revised: September 12, 2006 |
Published: August 1, 2006
Citation
Roh H., A. Platon, Y. Wang, and D.L. King. 2006.Catalyst Deactivation and Regeneration in Low Temperature Ethanol Steam Reforming with Rh/CeO2-ZrO2 Catalysts.Catalysis Letters 110, no. 1-2:1-6.PNNL-SA-47728.