Ce-Doped La2O3 based catalyst for the oxidative coupling of methane

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Ferreira, VJ (Autor) Outra; Tavares, P (Autor) Outra; Figueiredo, JL (Autor) FEUP; Faria, JL (Autor) FEUP

Revista

Título: Catalysis Communications

Vol. 42

Páginas: 50-53

ISSN: 1566-7367

Editora: Elsevier

Indexação

ISI Web of Knowledge - 27 Citações

ISI Web of Science

Scopus - 42 Citações

Outras Informações

ID Authenticus: P-008-CN7

DOI: 10.1016/j.catcom.2013.07.035

Abstract (EN): The effect of ceria was studied on the oxidative coupling of methane (OCM) with Ce-doped La2O3 in a La:Ce molar ratio of 75:25 using two preparation methods. The characterisation techniques used were XRD and XPS. The results revealed high concentration of oxygen vacancies. Different types of ions (Ce3+ + Ce4+) were detected. More surface Ce3+ and higher ratio [(O-2(2-) + O-)/O2-] were obtained in the oxide synthesised by the solvothermal method, affecting the OCM reaction in terms of higher C-2 hydrocarbons selectivity. This was ascribed to the higher relative amount of O- species on the catalyst surface. (C) 2013 Published by Elsevier B.V.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4