Renewable H2 from Glycerol Steam Reforming: Effect of La2O3 and CeO2 Addition to Pt/Al2O3 catalysts.
Article first published online: 26 APR 2010
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 3, Issue 5, pages 619–628, May 25, 2010
How to Cite
Montini, T., Singh , R., Das , P., Lorenzut, B., Bertero , N., Riello, P., Benedetti, A., Giambastiani, G., Bianchini, C., Zinoviev, S., Miertus, S. and Fornasiero , P. (2010), Renewable H2 from Glycerol Steam Reforming: Effect of La2O3 and CeO2 Addition to Pt/Al2O3 catalysts. ChemSusChem, 3: 619–628. doi: 10.1002/cssc.200900243
- Issue published online: 14 MAY 2010
- Article first published online: 26 APR 2010
- Manuscript Revised: 22 DEC 2009
- Manuscript Received: 16 OCT 2009
- Universities of Trieste and Venice, ICCOM-CNR, INSTM, MIUR (Rome) PRIN2007 Project
- heterogeneous catalysis;
- supported catalysts
Glycerol is the main byproduct of biodiesel production and its increased production volume derives from the increasing demand for biofuels. The conversion of glycerol to hydrogen-rich mixtures presents an attractive route towards sustainable biodiesel production. Here we explored the use of Pt/Al2O3-based catalysts for the catalytic steam reforming of glycerol, evidencing the influence of La2O3 and CeO2 doping on the catalyst activity and selectivity. The addition of the latter metal oxides to a Pt/Al2O3 catalyst is found to significantly improve the glycerol steam reforming, with high H2 and CO2 selectivities. A good catalytic stability is achieved for the Pt/La2O3/Al2O3 system working at 350 °C, while the Pt/CeO2/Al2O3 catalyst sharply deactivates after 20 h under similar conditions. Studies carried out on fresh and exhausted catalysts reveal that both systems maintain high surface areas and high Pt dispersions. Therefore, the observed catalyst deactivation can be attributed to coke deposition on the active sites throughout the catalytic process and only marginally to Pt nanoparticle sintering. This work suggests that an appropriate support composition is mandatory for preparing high-performance Pt-based catalysts for the sustainable conversion of glycerol into syngas.