Ni-Fe Catalysts Derived from Perovskite Precursors for Partial Oxidation of Methane

Author(s): Camila R. B. Silva, Nielson F.P. Ribeiro, Mariana M.V.M. Souza

Journal Name: Current Catalysis

Volume 1 , Issue 3 , 2012

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LaNi1-xFexO3 perovskites (x= 0, 0.2 and 0.4) were synthesized by the combustion method with urea and used as catalyst precursors in the partial oxidation of methane (POM). LaNiO3 was obtained as a single phase, while NiO and La(OH)3 were also detected in Fe-doped samples. The substitution of Ni by Fe in LaNiO3 perovskite resulted in a decrease in the specific surface area and an increase in the reduction temperature. The perovskite structure was completely decomposed by reduction, with formation of Ni°-Fe° and La2O3 phases. Activity cycles between 400 and 800°C revealed that the introduction of Fe decreased the catalytic activity for POM reaction at high temperatures. The catalysts showed great stability during 24 h on stream at 750°C without carbon deposition.

Keywords: Ni-Fe catalysts, perovskites, partial oxidation, methane, syngas, Fischer-Tropsch reaction, Combustion, perovskite catalysts, nano-sized, propellant chemistry, thermal conductivity detector, Carboxen columns, XRD, metallic nickel

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Article Details

Year: 2012
Published on: 31 October, 2012
Page: [215 - 220]
Pages: 6
DOI: 10.2174/2211544711201030215
Price: $25

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