Biogas Upgrading Via Dry Reforming Over a Ni-Sn/CeO 2 -Al 2 O 3 Catalyst: Influence of the Biogas Source

Estelle le Saché, Sarah Johnson, Laura Pastor-Pérez, Bahman Amini Horri and Tomas R. Reina
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Estelle le Saché: Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK
Sarah Johnson: Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK
Laura Pastor-Pérez: Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK
Bahman Amini Horri: Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK
Tomas R. Reina: Chemical & Process Engineering Department, University of Surrey, Guildford GU2 7XH, UK

Energies, 2019, vol. 12, issue 6, 1-14

Abstract: Biogas is a renewable, as well as abundant, fuel source which can be utilised in the production of heat and electricity as an alternative to fossil fuels. Biogas can additionally be upgraded via the dry reforming reactions into high value syngas. Nickel-based catalysts are well studied for this purpose but have shown little resilience to deactivation caused by carbon deposition. The use of bi-metallic formulations, as well as the introduction of promoters, are hence required to improve catalytic performance. In this study, the effect of varying compositions of model biogas (CH 4 /CO 2 mixtures) on a promising multicomponent Ni-Sn/CeO 2 -Al 2 O 3 catalyst was investigated. For intermediate temperatures (650 °C), the catalyst displayed good levels of conversions in a surrogate sewage biogas (CH 4 /CO 2 molar ratio of 1.5). Little deactivation was observed over a 20 h stability run, and greater coke resistance was achieved, related to a reference catalyst. Hence, this research confirms that biogas can suitably be used to generate H 2 -rich syngas at intermediate temperatures provided a suitable catalyst is employed in the reaction.

Keywords: biogas; syngas production; DRM; Ni catalyst; bi-metallic catalyst; ceria-alumina (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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