Selective Production of H2 from Ethanol at Low Temperatures over Rh/ZrO2-CeO2 Catalysts

Journal Article · Tue Jul 01 00:00:00 EDT 2008 · Topics in Catalysis, 49(1-2):32-37

DOI:https://doi.org/10.1007/s11244-008-9066-3· OSTI ID:935605

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

A series of Rh catalysts on various supports have been applied to H2 production from the bio-ethanol steam reforming reaction. Support plays a very important role on product selectivity at low temperatures (below 450°C). Acidic or basic supports favor ethanol dehydration, while ethanol dehydrogenation is favored over neutral supports at low temperatures. Among the catalysts evaluated in this study, the Rh/Ce-ZrO2 catalyst exhibited the highest H2 yield at 450 °C, which is possibly due to the high oxygen storage capacity of Ce-ZrO2 resulting in efficient transfer of mobile oxygen species from the H2O molecule to the reaction intermediate.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 935605
• Report Number(s): PNNL-SA-46943; EB4201000; TRN: US200816%%628
• Journal Information: Topics in Catalysis, 49(1-2):32-37, Vol. 49, Issue 1-2
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
ETHANOL
HYDROGEN PRODUCTION
REACTION INTERMEDIATES
STEAM REFORMER PROCESSES
RHODIUM
CATALYTIC EFFECTS
CATALYST SUPPORTS
CERIUM
ZIRCONIUM OXIDES
H2 production
Ethanol steam reforming
low temperature
Rh
Ce-ZrO2 BIOMASS-DERIVED HYDROCARBONS
MIXED-OXIDE CATALYSTS
HYDROGEN-PRODUCTION
FUEL-CELL
THERMODYNAMIC ANALYSIS
NI-CE-ZRO2 CATALYSTS
STEAM
CO
METHANE
CERIA