Insights into the role of the different supports in copper-based catalysts for propane combustion

Abstract

The catalytic efficacy of copper-based catalysts for volatile organic compounds (VOCs) oxidation is significantly affected by the metal oxide support's chemical properties. However, rigorous comparative analyses on TiO₂ and CeO₂ supports are scarce. This study systematically constructs Cu/TiO₂ and Cu/CeO₂ catalysts and investigates their mechanisms in promoting propane oxidation. Cu/CeO₂ exhibits superior performance and stability. Our research reveals the key role of Cu-O-Ce interfacial architecture in forming Cu¹⁺ sites for efficient propane adsorption and triggering surface O_latt generation, accelerating propane combustion. These findings elucidate Cu/CeO₂ catalyst enhanced performance and offer insights into non-noble metal catalysts. By demonstrating CeO₂ catalyst superiority, this study provides a basis for selecting optimal support materials to optimize catalyst performance, driving the development of cost-effective and eco-friendly catalytic technologies for air pollution control.