• Evgeny A. Alikin
  • Evgeny O. Baksheev
  • Grigory B. Veselov
  • Roman M. Kenzhin
  • Vladimir O. Stoyanovskii
  • Pavel E. Plyusnin
  • Yury V. Shubin
  • Aleksey A. Vedyagin
Due to enhanced high-temperature stability, zirconia-stabilized alumina is widely used as a support of three-way catalysts. The addition of barium oxide is known to improve the catalytic performance of the composition. In order to go in-depth about the effects of BaO addition, a series of samples was prepared using nitrates and complex salts as a precursor. The interaction of BaO with alumina was found to change dramatically the metal-support interaction of the latter with metals. Thus, the presence of BaO resulted in the sintering of Pd with the formation of agglomerated Pd0 species, which explains a lower activity in CO oxidation of the BaO-doped samples after thermal treatment. Contrarily, the addition of barium nitrate showed a positive effect, inhibiting the collapse of the porous structure of the support, which was the most crucial and accompanied by the formation of the α-Al2O3 phase when no barium nitrate was added.
Язык оригиналаАнглийский
Номер статьи112945
ЖурналJournal of Environmental Chemical Engineering
Номер выпуска3
СостояниеОпубликовано - 1 июн. 2024

    Предметные области WoS

  • Технологии, Моделирование условий эксплуатации
  • Технологии, Химические

    Предметные области ASJC Scopus

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Pollution
  • Process Chemistry and Technology

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