Synthesis and Characterization of Manganese Oxide Catalysts for the Total Oxidation of Ethyl Acetate

• 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: Topics in Catalysis

Vol. 52

Páginas: 470-481

ISSN: 1022-5528

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 55 Citações

ISI Web of Science

Scopus - 77 Citações

COMPENDEX

Classificação Científica

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

Outras Informações

ID Authenticus: P-003-KP2

DOI: 10.1007/s11244-009-9187-3

Abstract (EN): Manganese oxide catalysts were synthesized by direct reaction between manganese acetate and permanganate ions, under acidic and reflux conditions. Parameters such as pH (2.0-4.5) and template cation (Na(+), K(+) and Cs(+)) were studied. A pure cryptomelane-type manganese oxide was synthesized under specific conditions, and it was found that the template cation plays an important role on the formation of this kind of structure. Cryptomelane was found to be a very active oxidation catalyst, converting ethyl acetate into CO(2) at low temperatures (220 A degrees C). This catalyst is very stable at least during 90 h of reaction and its performance is not significantly affected by the presence of water vapour or CO(2) in the feed stream. The catalyst performance can be improved by the presence of small amounts of Mn(3)O(4).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12