Journal
CHEMCATCHEM
Volume 9, Issue 4, Pages 586-596Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201600582
Keywords
carbon dioxide fixation; doping; lanthanum; nickel; supported catalysts
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Funding
- Applied Catalysis European Network (ACENET)
- METACOOR project
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Dry-reforming catalysts were prepared by supporting Ni nanoparticles (2-3nm) on La-doped silica. These materials display higher activity and stability in low-temperature dry reforming (773K) than Ni/SiO2 or Ni/La2O3. The La-doped silica-supported catalysts were found to have exclusively lanthanum silicate at their surface rather than La2O3 and/or SiO2. While an increasing amount of La was found to favor both CO2 adsorption capacity and strength, it also influenced the hydrogen adsorption strength on nickel particles significantly, as evidenced by H-2 temperature-programmed desorption analysis. Finally, CH4 temperature-programmed reduction analysis revealed that the CH4 cracking threshold temperature varies in the order: Ni-bulk
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