Work

An Approach to the Optimization of Ba-Mn-Cu Perovskites as Catalysts for CO Oxidation: The Role of Cerium

Year: 2025

Type: article

Abstract: Two copper-containing perovskites Ba0.8Mn0.7Cu0.3O3 and Cu(4 wt%)/Ba0.7MnO3 (selected from previous studies) were tested as catalysts for the CO oxidation reaction under conditions similar to the found in the exhaust of last-generation automotive internal combustion engines. The Cu(4 wt%)/Ba0.7MnO3 sample has been selected due to its higher tolerance to CO2. In order to optimize the performance of this sample for the reaction under study, a Cu(2 wt%)Ce(2 wt%)/Ba0.7MnO3 formulation was synthesized, characterized and tested. The excellent catalytic performance of the bimetallic formulation, in terms of CO conversion at low temperatures and tolerance to CO2, is because cerium improves the redox properties and increases the proportion of reduced copper species on the surface compared to the Cu(4 wt%)/Ba0.7MnO3 sample.

Source: Nanomaterials

DOI: 10.3390/nano15191467

Authors: Álvaro Díaz-Verde, María José Illán-Gómez

Institution: University of Alicante

Language: English

Topic: Catalytic Processes in Materials Science

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,896