Journal
CATALYSIS LETTERS
Volume 129, Issue 1-2, Pages 135-141Publisher
SPRINGER
DOI: 10.1007/s10562-008-9799-4
Keywords
Water gas shift; Sodium; Pt/TiO2; Hydrogen
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Funding
- SEMGREEN
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Na promoted Pt/TiO2 catalysts have been studied under high severity, near equilibrium, conditions for use as a single stage WGS catalyst. Addition of 3 wt% Na to a 1 wt% Pt/TiO2 catalyst has been found to improve water gas shift activity significantly compared to Pt/TiO2, Pt/CeO2, and Pt-Re/TiO2 catalysts. This catalyst is stable when the reaction temperature is higher than 250 A degrees C. Deactivation occurred when the reaction temperature was lower than 250 A degrees C, however, returning the temperature to higher than 250 A degrees C fully recovered activity. TEM observations revealed that addition of Na inhibited Pt particle sintering. These results suggest that Na promoted Pt/TiO2 is a promising single stage water gas shift catalyst for small scale hydrogen production.
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