Zero-valent iron supported on nitrogen-containing activated carbon for catalytic wet peroxide oxidation of phenol

• Type: Article in International Scientific Journal
• Date: 2014

Authors

S. A. Messele (Author) Other; O. S. G. P. Soares (Author) FEUP; J. J. M. Órfão (Author) FEUP; F. Stüber (Author) Other; C. Bengoa (Author) Other; A. Fortuny (Author) Other; A. Fabregat (Author) Other; J. Font (Author) Other

Journal

Title: Applied Catalysis B: Environmental

Vol. 154

Pages: 329-338

ISSN: 0926-3373

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 46 Citations

ISI Web of Science

Scopus - 60 Citations

Scientific classification

CORDIS: Technological sciences > Engineering

FOS: Engineering and technology

Associated Projects

LA 20 - PROJECTO ESTRATÉGICO - LA 20 - 2013-2014

Other information

Authenticus ID: P-009-7BB

DOI: 10.1016/j.apcatb.2014.02.033

Abstract (EN): Zero-valent iron supported catalysts were prepared through modifying an activated carbon (AC) support with different nitrogen containing precursors; (ethylenediamine, urea and melamine) and impregnating it with 3 wt% of iron. The supports were characterized by N-2 adsorption at -196 degrees C, elemental analysis (EA), the pH at the point of zero charge (pH(pzc)) and temperature programmed desorption (TPD). The iron catalysts were also characterized by temperature programmed reduction (TPR). Subsequently, the catalysts were tested in the adsorption and wet peroxidation of phenol. The results from the different characterization techniques demonstrate that the nitrogen-containing groups are successfully introduced into the carbon surface via all the precursors used. The tests of the different modified carbons as adsorbents/catalysts indicated that the adsorption capacity and the efficiency in phenol oxidation are governed by the specific surface area and functional groups present. Both surface chemistry and textural properties of carbons are influenced by the nitrogen source and the type of oxygen functionalities preexisting on the surface. The modified carbon-supported iron catalysts revealed significantly enhanced phenol removal efficiency, reaching over 85% conversion after 3 h, and showed interesting catalytic stability.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10