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论文类型：期刊论文

发表时间：2013-12-05

发表刊物：CATALYSIS COMMUNICATIONS

收录刊物：EI、SCIE、Scopus

卷号：42

期号：42

页面范围：93-97

ISSN号：1566-7367

关键字：Formaldehyde; Catalytic oxidation; Au/gamma-Al2O3; Room temperature

摘要：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.