INTEQUI   20941
INSTITUTO DE INVESTIGACIONES EN TECNOLOGIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
SYNTHESIS OF Ni NANOPARTICLES SUPPORTED CARBON CATALYSTS USING PAPER AS BIO-TEMPLATE
Autor/es:
AGUSTÍN E. GALETTI; BARROSO MARIANA N.; ARRÚA LUIS A.; ANTONIO MONZÓN; ABELLO M. CRISTINA
Lugar:
Cancun
Reunión:
Simposio; Symposium 6A, Catalysis - Solids, Molecules, Nanoparticles and Interfaces at the XXII International Materials Research Congress; 2013
Institución organizadora:
SOCIEDAD MEXICANA DE MATERIALES, A.C.
Resumen:
In the recent years, the development of materials in nanometric scale has been focused due to their unique properties and their potential applications. Nickel nanoparticles have found applications in the field of electronics, magnetism, energy, technology and biomedicine. Nickel is an attractive catalytic phase for the reforming of hydrocarbons and biomass for hydrogen production for its optimal ratio cost/activity compared to the noble metals. The main disadvantage is the tendency to deactivation by carbon deposition, frequently by the formation of carbon nanofiber (CNF). The nickel particle diameter and its interaction with support are the key parameters for the control of the activity and carbon deposition rate. It was proven that under specific reaction conditions, nickel catalysts keep high conversion levels in spite of a high amount of carbon deposited. This behavior suggests that nickel particles are able to maintain their activity after they have been pulled out from the support by the CNF growing. This observation led us to design a Nickel catalyst.supported over carbon. Different types of carbon have been used as catalytic supports for their high stability, simplicity for metal recovery and versatility to adjust superficial properties. Carbon as support is also attractive for CNF production. Besides, desired metal loading and dispersion level require superficial treatments to ensure anchoring points for the metal ion adsorption. Recently, biotemplating methods have been used to produce highly porous carbides and oxides ceramis with pore morphologies in the micrometric range. Chun-yan Zuo y col have produced a biomorphic Al2O3 with a high surface using sol-gel slurries and filter papers as bio-templates. Biotemplated Al2O3 kept the filter paper morphology and showed a higher surface than Al2O3 produced by the conventional sol-gel method. In this work we synthetized highly dispersed Ni nanoparticles over carbon using filter paper as carbon source, biomorphic template and a porous media to absorb the nickel solution. Samples were characterized by BET, SEM, TEM, DRX, TG and were tested in the steam reforming of ethanol. Materials obtained are potentially useful for several fields like hydrogen storage, carbon nanotubes production and fine chemicals.