Lanthanide oxide modified nickel supported on mesoporous silica catalysts for dry reforming of methane

Bin Li, Xiaoqing Yuan, Lvyin Li, Baitao Li, Xiujun Wang, Keiichi Tomishige

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Addition of rare earth oxide, especially lanthanide oxide, was regarded as a promising strategy to improve the carbon resistance for Nickel-based catalysts in dry reforming of methane (DRM). In this work, Nickel-based catalysts containing lanthanide oxides (NiLa/SiO2, NiCe/SiO2, NiSm/SiO2, and NiGd/SiO2) were prepared and employed to catalyze DRM. Lanthanide oxide affected the formation of Ni nanoparticles in different size. In NiLa/SiO2 and NiCe/SiO2, Ni nanoparticles maintained relatively small size (4 nm), while in NiSm/SiO2 and NiGd/SiO2, nickel particles were in large size (8 nm). NiLa/SiO2 and NiCe/SiO2 exhibited better stability than the other two catalysts, with CH4 conversion decreasing from 64.6 to 57.6% and 61.6 to 60.3%, respectively in 10 h on stream. The kinetic study confirmed that adding lanthanide oxide significantly affected the activation energy of CH4 dissociation and CO2 dissociation. Compared to monometallic Ni/SiO2, the presence of Sm and Gd suppressed CO2 dissociation, and introduction of Ce and La effectively promoted CO2 dissociation. These characters contributed to the higher carbon resistance and good stability for NiLa/SiO2 and NiCe/SiO2 catalysts in DRM reaction.

Original languageEnglish
Pages (from-to)31608-31622
Number of pages15
JournalInternational Journal of Hydrogen Energy
Volume46
Issue number62
DOIs
Publication statusPublished - 2021 Sep 8

Keywords

  • Carbon deposition
  • Dry reforming of methane
  • Kinetic study
  • Lanthanide oxides
  • Nickel catalysts

ASJC Scopus subject areas

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

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