Room-temperature nitrophenol reduction over ag–ceo2 catalysts: The role of catalyst preparation method

Mariia Chernykh, Natalia Mikheeva, Vladimir Zaikovskii, Mikhail Salaev, Leonarda F. Liotta, Grigory Mamontov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Ag–CeO2 catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N2 sorption, TEM, H2-TPR methods, and probed in room-temperature p-nitrophenol reduction into p-aminophenol in aqueous solution at atmospheric pressure. The catalyst preparation method was found to determine the textural characteristics, the oxidation state and distribution of silver and, hence, the catalytic activity in the p-nitrophenol reduction. The impregnation technique was the most favorable for the formation over the ceria surface of highly dispersed silver species that are active in the p-nitrophenol reduction (the first-order rate constant k = 0.656 min−1).

Original languageEnglish
Article number580
Number of pages12
JournalCatalysts
Volume10
Issue number5
DOIs
Publication statusPublished - 21 May 2020

Keywords

  • Ag
  • Catalysts preparation
  • CeO catalysts
  • Metal
  • Mild conditions
  • Nitrophenol reduction
  • Support interaction
  • AG-AT-CEO2
  • 4-NITROPHENOL
  • nitrophenol reduction
  • METAL-SUPPORT INTERACTION
  • NANORODS
  • mild conditions
  • CO OXIDATION
  • metal-support interaction
  • NANOPARTICLES
  • NITROARENES
  • SELECTIVE HYDROGENATION
  • catalysts preparation
  • DEGRADATION
  • EFFICIENT
  • Ag-CeO(2)catalysts

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