CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
Hydrogen from glycerol steam reforming with a platinum catalyst supported on a SiO2-C composite
BUFFONI, IVANA N.; POMPEO, FRANCISCO; GATTI, MARTÍN N.; NICHIO, NORA N.; SANTORI, GERARDO F.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
PERGAMON-ELSEVIER SCIENCE LTD
Año: 2016 vol. 42 p. 12967 - 12967
This work studies 2 wt% Pt catalysts. The support is a SiO2-C composite whose main features are a high specific surface due to its mesoporosity, a higher thermal stability than the C support, and the absence of surface acid sites which could promote the dehydration reactions that produce coke precursors. The Pt/SiO2-C catalyst has very small metallic particles (dva = 1.37 nm) that favor the CC bond cleavage reactions which allow obtaining total gas conversion at 450 °C. With this catalyst, it is possible to obtain high yields to H2, between 4 and 5, which indicates that the active sites promote the WGS reaction, even with glycerol concentrations of 30 and 50%. Pt/SiO2-C is a very stable catalyst since it loses only 10% of its initial activity after 66 h on stream and is resistant to sintering and coke deposition.