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FeOx-supported gold catalysts for catalytic removal of formaldehyde at room temperature

Paper ID Volume ID Publish Year Pages File Format Full-Text
45041 46395 2014 9 PDF Available
Title
FeOx-supported gold catalysts for catalytic removal of formaldehyde at room temperature
Abstract

•This paper firstly reported complete oxidation of HCHO into CO2 and H2O over Au/FeOx-C200 catalyst at room temperature.•A certain amount of water was essential for complete oxidation of HCHO at room temperature.•Calcination temperature applied exerts a significant influence on the catalytic activity of Au/FeOx catalyst.

FeOx-supported Au catalysts prepared by co-precipitation (CP) were investigated for catalytic HCHO oxidation. The applied calcination temperature was found to greatly influence both the chemical properties and microstructure of the catalysts. Characterization using XRD, H2-TPR and XPS suggested that lower calcination temperature improves the reducibility of the catalysts, and favors the presence of surface hydroxyl groups. Consequently, an Au/FeOx catalyst calcined at 200 °C afforded 100% conversion of HCHO into CO2 and H2O at room temperature and under humid air. In situ DRIFTs studies suggested that the moisture was essential for deep oxidation of the formate intermediates into CO2 and H2O, this being the rate limiting step for catalytic HCHO oxidation.

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Keywords
Formaldehyde; Catalytic oxidation; Gold; Iron oxide; Room temperature
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FeOx-supported gold catalysts for catalytic removal of formaldehyde at room temperature
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 154–155, July–August 2014, Pages 73–81
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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