A highly active Ca/Cu/YCeO2–TiO2 catalyst for the transient reduction of NO with CO and naphthalene under oxidizing conditions. Issue 63 (14th December 2021)

• Record Type: Journal Article
• Authors: Sánchez, Luis; Aguila, Gonzalo; Araya, Paulo; Quijada, Sergio; Guerrero, Sichem
• Is Part Of: RSC advances. Volume 11:Issue 63(2021)
• Page Start: 39896
• Page End: 39906
• Publication Date: 2021-12-14
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d1ra08412g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A highly-active Ca/Cu/YCeO2 –TiO2 catalyst shows full conversion of CO and naphthalene and 72% conversion of NO under oxygen. 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 –TiO2 catalyst. Response surface methodology was used to identify the optimum amounts of calcium, copper, and cerium. The optimized Ca/Cu/YCeO2 –TiO2 catalyst was then extensively studied and characterized. The coupling of yttrium-stabilized ceria with TiO2 provided an active support that effectively activated naphthalene. When calcium and copper were added to the support, the obtained Ca/Cu/YCeO2 –TiO2 catalyst achieved the full conversion of CO and naphthalene and 72% conversion of NO. The Ca/Cu/YCeO2 –TiO2 catalyst possessed labile oxygen species, which might be related to the high catalytic activity.