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Title: Vapor phase ketonization of acetic acid on ceria based metal oxides

The activities of CeO2, Mn2O3-CeO2 and ZrO2-CeO2 were measured for acetic acid ketonization under reaction conditions relevant to pyrolysis vapor upgrading. We show that the catalyst ranking changed depending on the reaction conditions. Mn2O3-CeO2 was the most active catalyst at 350 oC, while ZrO2 - CeO2 was the most active catalyst at 450 oC. Under high CO2 and steam concentration in the reactants, Mn2O3-CeO2 was the most active catalyst at 350 and 450 °C. The binding energies of steam and CO2 with the active phase were calculated to provide the insight into the tolerance of Mn2O3-CeO2 to steam and CO2.
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Publication Date:
OSTI Identifier:
Report Number(s):
47660; BM0101010
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Topics in Catalysis, 56(18-20):1782-1789
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
Country of Publication:
United States
bio-oil upgrading; vapor phase ketonization; metal oxides; acid base catalyst; ceria; density functional theory; Environmental Molecular Sciences Laboratory