Catalyst Deactivation and Regeneration in Low Temperature Ethanol Steam Reforming with Rh/CeO2-ZrO2 Catalysts

Journal Article · Tue Aug 01 04:00:00 EDT 2006 · Catalysis Letters, 110(1-2):1-6

DOI:https://doi.org/10.1007/s10562-006-0082-2· OSTI ID:890102

Roh, Hyun-Seog; Platon, Alex; Wang, Yong; King, David L

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.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 890102
• Report Number(s): PNNL-SA-47728; 6696
• Journal Information: Catalysis Letters, 110(1-2):1-6, Journal Name: Catalysis Letters, 110(1-2):1-6
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
CATALYSTS
CATALYTIC EFFECTS
CERIUM OXIDES
DEACTIVATION
ETHANOL
Environmental Molecular Sciences Laboratory
HYDROGEN PRODUCTION
REGENERATION
RHODIUM
Rh/CeO2-ZrO2
STEAM REFORMER PROCESSES
ZIRCONIUM OXIDES
deactivation
ethanol steam reforming
low temperature
regeneration