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Química Nova  2012 

Efeito da adi??o de lantanio em catalisadores de Ni/ZrO2 aplicados na rea??o de reforma a vapor de etanol

DOI: 10.1590/S0100-40422012000300013

Keywords: ethanol steam reforming, hydrogen, nickel catalysts.

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Abstract:

the catalytic performance of ni/zro2 catalysts loaded with different lanthanum content for steam reforming of ethanol was investigated. catalysts were characterized by bet surface area, x-ray diffraction, uv-vis spectroscopy, temperature programmed reduction, and x-ray absorption fine structure techniques. results showed that lanthanum addition led to an increase in the degree of reduction of both nio and nickel surface species interacting with the support, due to the higher dispersion effect. the best catalytic performance at 450 oc was found for the ni/12lz catalyst, which exhibited an effluent gaseous mixture with the highest h2 yield.

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