Resumen

PROFETI, Luciene Paula Roberto; HABITZHEUTER, Filipe  y  ASSAF, Elisabete Moreira. Effects of adding lanthanum to Ni/ZrO₂ catalysts on ethanol steam reforming. Quím. Nova [online]. 2012, vol.35, n.3, pp. 510-516. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422012000300013.

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.

Palabras llave : ethanol steam reforming; hydrogen; nickel catalysts.