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- Title
Nickel Exsolution‐Driven Phase Transformation from an n=2 to an n=1 Ruddlesden‐Popper Manganite for Methane Steam Reforming Reaction in SOFC Conditions.
- Authors
Vecino‐Mantilla, Sebastián; Gauthier‐Maradei, Paola; Huvé, Marielle; Serra, José Manuel; Roussel, Pascal; Gauthier, Gilles H.
- Abstract
An original way to perform the exsolution of Ni nanoparticles on a ceramic support was explored for the development of methane steam reforming catalyst in SOFC anode conditions. The n=2 Ruddlesden‐Popper (RP) phase La1.5Sr1.5Mn1.5Ni0.5O7±δ has been synthesized by the Pechini method and subsequently reduced with an H2‐N2 mixture at different temperatures and reducing times to induce the formation of two phases: LaSrMnO4 (n=1 RP) decorated with metallic Ni nanoparticles. Preliminary measurements of catalytic behavior for the steam reforming have been carried out in a reduction‐reaction process with a mixture of 82 mol %CH4, 18 mol %N2 and low steam to carbon ratio (S/C=0.15). The catalyst exhibits a selectivity for CO production (0.97), 14.60 mol % CH4 conversion and around 24.19 mol % H2 production. Such catalytic behavior was maintained for more than 4 h, with a constant rate of hydrogen production and CH4 conversion rate.
- Subjects
STEAM reforming; INTERSTITIAL hydrogen generation; MANGANITE; NICKEL; WATER gas shift reactions
- Publication
ChemCatChem, 2019, Vol 11, Issue 18, p4631
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201901002