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Methane partial oxidation by the lattice oxygen of the lanio₃δ perovskite. a pulse study

SIERRA GALLEGO, GERMÁN and BATIOT-DUPEYRAT, CATHERINE and MONDRAGÓN, FANOR (2011) Methane partial oxidation by the lattice oxygen of the lanio₃δ perovskite. a pulse study. Dyna; Vol. 77, núm. 163 (2010); 141-150 DYNA; Vol. 77, núm. 163 (2010); 141-150 2346-2183 0012-7353 .

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LaNiO₃ perovskite was prepared by the selfcombustion method and tested as catalyst for CH4 activation using the oxygen lattice at 700°C and 800°C. Based on the non-stoichiometry experiments, the perovskite formula is written as La³⁺+ Ni³⁺ 0.37Ni²⁺ 0.63O2.68. When unreduced LaNiO3d perovskite is used, only type oxygen species were responsible for the partial CH₄ oxidation. Over non reduced perovskite high CH4 conversions to H₂ and CO were obtained. CH4 conversion and H₂, CO and CO₂, selectivities under quasistationary conditions were 100%, 80%, 98% and 2 % respectively at 800°C. At the beginning of the reaction, a complete oxidation of methane to CO₂ and H₂O took place, whereas a partial oxidation to CO and H₂ was observed after that period. In such conditions the H₂/CO molar ratio obtained was 1.7, indicating a contribution of the parallel reverse water gas shift reaction

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:Methane partial oxidation, lattice oxygen, LaNiO3δ perovskite, auto combustion method
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:27677
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :27 Junio 2014 18:52
Ultima modificación:18 Agosto 2014 18:05
Ultima modificación:18 Agosto 2014 18:05
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