Catalytic oxidation of ethyl acetate over a cesium modified cryptomelane catalyst

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Santos, VP (Autor) Outra; Manuel Fernando R Pereira (Autor) FEUP; José Melo Orfão (Autor) FEUP; José Luis Figueiredo (Autor) FEUP

Revista

Título: Applied Catalysis B: Environmental

Vol. 88

Páginas: 550-556

ISSN: 0926-3373

Editora: Elsevier

Indexação

ISI Web of Knowledge - 32 Citações

ISI Web of Science

Scopus - 47 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-003-K24

DOI: 10.1016/j.apcatb.2008.10.006

Abstract (EN): Cryptomelane-type manganese oxide was synthesized by redox reaction under acid and reflux conditions. Cesium was incorporated into the tunnel structure by the ion-exchange technique. The catalytic oxidation of ethyl acetate in low concentration (1600 ppmv) was used to test the performance of the catalysts prepared. The presence of small amounts of cesium was found to improve the catalytic performance of cryptomelane. This behaviour was correlated with the basic properties of the catalyst. Temperature programmed experiments, and tests without oxygen in the feed, suggest that lattice oxygen atoms can react with ethyl acetate at low temperatures and are involved in the mechanism of ethyl acetate oxidation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7