A highly active Ca/Cu/YCeO2-TiOcatalyst for the transient reduction of NO with CO and naphthalene under oxidizing conditions

Luis Sánchez, Gonzalo Aguila, Paulo Araya, Sergio Quijada, Sichem Guerrero

Research output: Contribution to journalArticlepeer-review

Abstract

The transient combustion of biomass leads to the evolution of a variety of pollutants (NO, CO, organic compounds, and many others) that can react with each other on a suitable catalyst to generate compounds of lower toxicity. Here, the transient reduction of NO with CO and naphthalene in the presence of oxygen was studied on a Ca/Cu/YCeO2-TiO2catalyst. Response surface methodology was used to identify the optimum amounts of calcium, copper, and cerium. The optimized Ca/Cu/YCeO2-TiO2catalyst was then extensively studied and characterized. The coupling of yttrium-stabilized ceria with TiO2provided an active support that effectively activated naphthalene. When calcium and copper were added to the support, the obtained Ca/Cu/YCeO2-TiO2catalyst achieved the full conversion of CO and naphthalene and 72% conversion of NO. The Ca/Cu/YCeO2-TiO2catalyst possessed labile oxygen species, which might be related to the high catalytic activity.

Original languageEnglish
Pages (from-to)39896-39906
Number of pages11
JournalRSC Advances
Volume11
Issue number63
DOIs
Publication statusPublished - 14 Dec 2021

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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