Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 224, Issue -, Pages 125-135Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2017.10.047
Keywords
CO2 utilisation; Dry reforming; Si-reforming; Ni-Sn catalysts; Syngas
Funding
- Department of Chemical and Process Engineering at the University of Surrey
- EPSRC [EP/R512904/1]
- Erasmus + programme
- Spanish Ministry of Economy and Competitiveness - FEDER funds from the European Union [ENE2015-66975-C3-2-R]
- Junta de Andalucia - FEDER funds from the European Union [TEP-8196]
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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 (10 wt.%) 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 20 h, before selecting the most appropriate Sn/Ni ratio and promoting the alumina base with 20 wt.% 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 H-2/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.
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