Transition metal (Cu, Cr, and V) modified MCM-41 for the catalytic wet air oxidation of aniline

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Gomes, HT (Autor) Outra; Selvam, P (Autor) Outra; Dapurkar, SE (Autor) Outra; Figueiredo, JL (Autor) FEUP; Faria, JL (Autor) FEUP

Revista

Título: Microporous and Mesoporous Materials

Vol. 86

Páginas: 287-294

ISSN: 1387-1811

Editora: Elsevier

Indexação

ISI Web of Knowledge - 79 Citações

ISI Web of Science

Scopus - 90 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-000-0E8

DOI: 10.1016/j.micromeso.2005.07.022

Abstract (EN): Mesoporous MCM-41 based materials containing various transition metals (Cr, Cu and V) were prepared hydrothermally and characterized using various analytical and spectroscopic techniques. Cr and Cu are randomly anchored to the surface of MCM-41 support, while V is predominantly present as penta-valent species within the framework structure of the support. The catalytic activity was tested in the wet air oxidation of aniline aqueous solutions (2 g/L) using a high-pressure reactor at 200 degrees C with an oxygen partial pressure of 6.9 bar. Among the prepared materials, (Cu)MCM-41 showed a significant catalytic activity with an aniline conversion after 2 h of 96% and a selectivity towards CO2 formation of 76%. Although some leaching of the Cu was observed, the catalyst showed a good performance and stability after re-use in at least three consecutive cycles.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8