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Complete oxidation of formaldehyde at ambient temperature over γ-Al2O3 supported Au catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
49796 46766 2013 5 PDF Available
Title
Complete oxidation of formaldehyde at ambient temperature over γ-Al2O3 supported Au catalyst
Abstract

•Au/γ-Al2O3 catalyst shows superior HCHO oxidation activity at room temperature.•Surface hydroxyl groups played a key role in the catalytic oxidation of HCHO.•Complete oxidation of HCHO was firstly reported over γ-Al2O3 supported Au catalyst.

Au supported on γ-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.

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Keywords
Formaldehyde; Catalytic oxidation; Au/γ-Al2O3; Room temperature
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Complete oxidation of formaldehyde at ambient temperature over γ-Al2O3 supported Au catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 42, 5 December 2013, Pages 93–97
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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