Copper Supported on Mesoporous Structured Catalysts for NO Reduction

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Felgueiras, MBS (Autor) Outra; Restivo, J (Autor) Outra; Sousa, JPS (Autor) Outra; Manuel Fernando R Pereira (Autor) FEUP; O.S.G.P. Soares (Autor) FEUP

Revista

Título: Catalysts

Vol. 12

Página Final: 170

ISSN: 2073-4344

Editora: MDPI

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00W-1G5

DOI: 10.3390/catal12020170

Abstract (EN): Nitrogen oxides (NOx) are one of the pollutants of greatest concern in terms of atmospheric contamination and, consequently, human health. The main objective of this work, is the synthesis of structured carbon catalysts, introducing on their surface metals and nitrogen groups, catalytically active in NO reduction. Structured catalysts represent an attractive alternative to powder catalysts because they have better thermal stability and lower pressure drop. The catalysts were synthesized by coating a melamine foam using precursor solutions of carbon xerogels with and without nitrogen (using melamine and urea as precursors), and impregnated with transition metals (Fe, Ni and Cu). The introduction of nitrogen and metals modified the textural properties of the materials. Samples synthesized with melamine presented the highest amount of nitrogen, while the highest content of copper, found to be the most active transition metal for NO reduction, was found in structured catalysts impregnated with urea. The presence of transition metals in catalysts is essential for the reduction of NO to N-2 and the introduction of nitrogenous precursors makes this evident. The synthesis and application of carbon-supported structured catalysts containing transition metals for NO reduction is demonstrated in this work for the first time, as well as the study of the factors influencing their performance.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17