2. Ethanol Steam Reforming over Rh and Co Catalysts Supported on Lanthana/Silica Systems

LEANDRO CORONEL, ANA TARDITI, JOHN MÚNERA, LAURA CORNAGLIA

Congreso; NAM 24, 14-19 de junio de 2015; 2015

Among the different sources of hydrogen, ethanol is considered an excellentalternative due to its almost close carbon cycle of production and low toxicity. Ethanol steamreforming (ESR) is a global reaction that produces 6 moles of hydrogen per mol of ethanol.However, depending on the catalyst used and the operating conditions employed, severalreactions may occur in parallel such as ethanol decomposition, dehydrogenation anddehydration, methane steam reforming, water gas shift and hydrogenation reactions. All theseparallel reactions produce acetaldehyde, hydrogen, methane, carbon oxides and ethylene [1,2].Numerous catalysts based on noble metals as well as non-noble metals such as cobalt, nickeland copper have been studied for the steam reforming of ethanol [2]. Several studies haveshown that rhodium based catalysts are the most active and selective ones for hydrogenproduction [2]. Furthermore, the support may influence the catalytic properties of the metalsfor the ethanol steam reforming (ESR).In previous publications [3,4], we reported La2O3-SiO2 binary supports for Rhcatalysts applied to the dry reforming of methane and ESR. The formation of an amorphouslanthanum disilicate phase yielded a proper metal-support interaction that led to a high metaldispersion and high methane reaction rates. The purpose of this work was to apply Rh and Comonometallic catalysts supported on binary La2O3-SiO2