Title of article :
Methane oxidation over SOFC anodes with nanocrystalline ceria-based phases
Author/Authors :
Kharton، نويسنده , , V.V. and Yaremchenko، نويسنده , , A.A. and Valente، نويسنده , , A.A. and Frolova، نويسنده , , E.V. and Ivanovskaya، نويسنده , , M.I. and Frade، نويسنده , , J.R. and Marques، نويسنده , , F.M.B. and Rocha، نويسنده , , J.، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2006
Abstract :
The electrocatalytic performance of cermet anodes comprising Pt and nanocrystalline ceria-based components, Pt-modified Ce0.45Zr0.45La0.10O2−δ (CZLO) and Ce0.8Gd0.2O2−δ (CGO), was evaluated for the oxidation of dry CH4 in a SOFC-type reactor with zirconia-based electrolyte. At temperatures above 1100 K, CZLO-containing cermet exhibits a high activity towards the partial oxidation of methane, probably promoted by instability of the cubic fluorite lattice. For the stoichiometric O2:CH4 ratio equal to 0.5, the CO yield over CZLO/Pt anode is 73% with 54% conversion at 1173 K. Further increase in the CO selectivity and CH4 conversion, up to 84% and 87% respectively, can be achieved by incorporating Pt-modified CZLO catalyst at the reactor outlet.
Keywords :
SOFC anode , Methane oxidation , nanocrystalline ceria , Syngas generation , Catalyst
Journal title :
Solid State Ionics
Journal title :
Solid State Ionics
