A Study on Methanation of Carbon Monoxide over Catalysts NiO/TiO2 and NiO/-Al2O3

  • Luu Cam Loc
  • Nguyen Manh Tuan
  • Nguyen Kim Dung
  • Nguye Huu Huy Phuc
  • Ho Si Thoang


The catalyst 7.5% NiO/TiO2 and seven samples of NiO/ -Al2O3 with NiO content from 7.5% to 60% have been obtained and studied. Physico-chemical characteristics of the catalysts were determined by methods of Adsorption (BET), X-ray Diffraction (XRD), Temperature- Programmed Reduction (TPR) and Hydrogen Pulse Titration. The catalytic properties of the obtained samples were investigated in the reaction of CO methanation at temperatures 180 – 220C and mole ratios hydrogen/carbon monoxide 25-100. It has been found that the optimal regime for catalyst treatment is calcination at 600C and reduction at 400C. The catalyst 7.5% NiO/TiO2 expressed very high activity but in case of NiO/Al2O3 for having high activity it was necessary to raise the content of NiO up to 37.7%. This catalyst has been indicated to be the most active in all the studied conditions. The determining factors for expressing high activity in the catalyst 7.5% NiO/TiO2 are the presence of spinel NiTiO3 and the optimal average size of nickel assemblies but in the catalyst 37.7% NiO/Al2O3 – the optimal size of active centers, big values of specific surface area and content of NiO and the high thermal stability.


Luu Cam Loc
Journals of Science 70 Tran Hung Dao Str, Hanoi, Vietnam
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