期刊
CATALYSIS COMMUNICATIONS
卷 42, 期 -, 页码 93-97出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2013.08.008
关键词
Formaldehyde; Catalytic oxidation; Au/gamma-Al2O3; Room temperature
资金
- National Natural Foundation of China [21373037, 21073024]
- Natural Science Foundation of Liaoning Province [201102034]
- Program for New Century Excellent Talents in University [NCET-07-0136]
- Fundamental Research Funds for the Central Universities [DUT12LK23]
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.
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