Syngas production by steam and oxy-steam reforming of biogas on monolith-supported CeO2-based catalysts

Antonio Vita, Cristina Italiano, M. Arsalan Ashraf, Lidia Pino, Stefania Specchia

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In this study, the syngas production by steam reforming (SR) and oxy-steam reforming (OSR) of clean biogas over cordierite monoliths (400 cpsi) lined with Ni, Rh, or Pt on CeO2 catalyst was deeply investigated. Structured catalysts were prepared by using an alternative method to traditional washcoating based on the combination of the solution combustion synthesis (SCS) with the wetness impregnation (WI) technique. TEM and SEM analysis were used to study the morphology of the catalytic layer and to determine its thickness, while the quality of the coating in terms of adhesion on the monolith was evaluated by ultrasonic treatment in isopropyl alcohol solution. The performance and the stability of the structured catalysts were investigated at different process parameters, namely temperature (700-900 °C), steam-to-carbon (S/C = 1-5) and oxygen-to-carbon (O/C = 0.1-0.2) molar ratios, and weight space velocity (WSV = 30,000-250,000 NmL gcat -1 h-1). The SCS + WI deposition method allowed obtaining a uniform and thin coated layer with high mechanical strength. The following order of activity was exploited: Rh > Pt > Ni for biogas SR and Rh > Pt ≈ Ni for biogas OSR. The Rh-based catalyst exhibited higher activity and long-lasting stability towards biogas SR and OSR reactions for syngas production.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Early online date14 Dec 2017
DOIs
Publication statusE-pub ahead of print - 14 Dec 2017

Keywords

  • Durability
  • Mechanical strength
  • Platinum/rhodium/nickel
  • Solution combustion synthesis
  • Structured catalyst

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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