Details

Autor(en) / Beteiligte

• Stroud, T.
• Smith, T.J.
• Le Saché, E.
• Santos, J.L.
• Centeno, M.A.
• Arellano-Garcia, H.
• Odriozola, J.A.
• Reina, T.R.

Titel

Chemical CO2 recycling via dry and bi reforming of methane using Ni-Sn/Al2O3 and Ni-Sn/CeO2-Al2O3 catalysts

Ist Teil von

• Applied catalysis. B, Environmental, 2018-05, Vol.224, p.125-135

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Development of highly efficient multicomponent Ni-Sn/CeO2-Al2O3 catalysts for the dry reforming of methane.•Understanding the role of Sn and CeO2 as promoters in the reforming reaction.•Influence of the promoters in the crystalline structure of the carbon deposits during dry reforming.•Flexibility in syngas production due to the versatility of the developed catalysts to work under dry/bi reforming conditions. Carbon formation and sintering remain the main culprits regarding catalyst deactivation in the dry and bi-reforming of methane reactions (DRM and BRM, respectively). Nickel based catalysts (10wt.%) supported on alumina (Al2O3) have shown no exception in this study, but can be improved by the addition of tin and ceria. The effect of two different Sn loadings on this base have been examined for the DRM reaction over 20h, before selecting the most appropriate Sn/Ni ratio and promoting the alumina base with 20wt.% of CeO2. This catalyst then underwent activity measurements over a range of temperatures and space velocities, before undergoing experimentation in BRM. It not only showed good levels of conversions for DRM, but exhibited stable conversions towards BRM, reaching an equilibrium H2/CO product ratio in the process. In fact, this work reveals how multicomponent Ni catalysts can be effectively utilised to produce flexible syngas streams from CO2/CH4 mixtures as an efficient route for CO2 utilisation.