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

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Gomes, HT (Author) Other; Selvam, P (Author) Other; Dapurkar, SE (Author) Other; Figueiredo, JL (Author) FEUP; Faria, JL (Author) FEUP

Journal

Title: Microporous and Mesoporous Materials

Vol. 86

Pages: 287-294

ISSN: 1387-1811

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 79 Citations

ISI Web of Science

Scopus - 90 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8