Hydrogen production from ethanol steam reforming on M/CeO2/YSZ (M = Ru, Pd, Ag) nanocomposites

CARBAJAL; MONTINI; LORENZUT; TROIANI; GENNARI; GRAZIANI; FORNASIERO

CATALYSIS TODAY

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2012 p. 96 - 104

0920-5861

M/CeO2/YSZ nanocomposites (M = Ru, Pd, Ag) were prepared by successive impregnation and tested inthe ethanol steam reforming (ESR). Ru/CeO2/YSZ demonstrated good activity and stability under reactionconditions. Pd/CeO2/YSZ shows good initial activity but suffers of significant deactivation while theperformances of the Ag-based sample were rather poor. A plethora of different structural (Powder XRD),microstructural (HR-TEM), morphological (surface area, CO chemisorption) and thermal analysis characterizationtechniques were used to evidence the modification of the samples induced by prolongedexposure to the reaction mixture. The promising performances of Ru/CeO2/YSZ were associated to thecombination of the positive action of the metal selectivity to syn-gas and of CeO2 in metal dispersionstabilization and coke deactivation prevention.