A comparative study of Ni catalysts supported on Al2O3, MgO–CaO–Al2O3 and La2O3–Al2O3 for the dry reforming of ethane

Anastasios I. Tsiotsias, Nikolaos D. Charisiou, Victor Sebastian, Safa Gaber, Steven J. Hinder, Mark A. Baker, Kyriaki Polychronopoulou, Maria A. Goula

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

CO2 utilization through the activation of ethane, the second largest component of natural and shale gas, to produce syngas, has garnered significant attention in recent years. This work provides a comparative study of Ni catalysts supported on alumina, alumina modified with CaO and MgO, as well as alumina modified with La2O3 for the reaction of dry ethane reforming. The calcined, reduced and spent catalysts were characterized employing XRD, N2 physisorption, H2-TPR, CO2-TPD, TEM, XPS and TPO. The modification of the alumina support with alkaline earth oxides (MgO and CaO) and lanthanide oxides (La2O3), as promoters, is found to improve the dispersion of Ni, enhance the catalyst's basicity and metal-support interaction, as well as influence the nature of carbon deposition. The Ni catalyst supported on modified alumina with La2O3 exhibits a relatively stable syngas yield during 8 h of operation, while H2 and CO yields decrease substantially for Ni/Al2O3.

Original languageBritish English
Pages (from-to)5337-5353
Number of pages17
JournalInternational Journal of Hydrogen Energy
Volume47
Issue number8
DOIs
StatePublished - 26 Jan 2022

Keywords

  • Basic/lanthanide promoters
  • Carbon deposition
  • CO utilization
  • Dry ethane reforming
  • Modified alumina
  • Ni catalysts

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