Efeito do teor metálico em catalisadores Co/Al2O3 aplicados à reação de reforma a vapor de etanol

Autor:	Santos,Rudye K. S., Batista,Marcelo S., Assaf,Elisabete M., Assaf,José M.
Jazyk:	portugalština
Rok vydání:	2005
Předmět:	inorganic chemicals hydrogen production ethanol steam reforming cobalt oxide
Zdroj:	Química Nova v.28 n.4 2005 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ
Popis:	The development of cobalt catalysts to produce hydrogen from ethanol is the goal of this investigation. Co/Al2O3 catalysts were prepared by impregnation and characterized by atomic absorption, nitrogen adsorption, X-ray diffraction, Raman spectroscopy, temperature programmed reduction and carbon analysis. The catalysts contained Co3O4 oxide and Co3+ and Co2+ species interacting with alumina. The cobalt load affects the crystal size and the crystalline structure and higher Co loads influence the reaction mechanism, changing the selectivity of the catalysts, decreasing the amount of CO produced and avoiding the formation of products catalyzed by the support. The ethanol conversion was 50-70% with 10
Databáze:	OpenAIRE
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