Indexed by:期刊论文

Date of Publication:2013-12-05

Journal:CATALYSIS COMMUNICATIONS

Included Journals:EI、SCIE、Scopus

Volume:42

Issue:42

Page Number:93-97

ISSN No.:1566-7367

Key Words:Formaldehyde; Catalytic oxidation; Au/gamma-Al2O3; Room temperature

Abstract:Au supported on gamma-Al2O3 prepared by deposition-precipitation (DP) using urea is found to be a highly active catalyst for the total oxidation of HCHO at room temperature under humid air, without the need for a reducible oxide as support. In-situ DRIFTS studies suggested that the surface hydroxyl groups played a key role in the partial oxidation of HCHO into the formate intermediates, which can be further oxidized into CO2 and H2O with participation of nano-Au. This study challenges the traditional idea of supporting noble metals on reducible oxides for HCHO oxidation at room temperature. (C) 2013 Elsevier B.V. All rights reserved.