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Acetaldehyde removal using a diphasic process coupling a silver-based nano-structured catalyst and a plasma at atmospheric pressure

Paper ID Volume ID Publish Year Pages File Format Full-Text
54847 47028 2013 8 PDF Available
Title
Acetaldehyde removal using a diphasic process coupling a silver-based nano-structured catalyst and a plasma at atmospheric pressure
Abstract

The efficiency of the process coupling a dielectric barrier discharge and a fluidized nanostructured silver-based bed for the degradation of a model pollutant (acetaldehyde CH3CHO) is presented. The deposition of silver nanoparticles has been realized by photocatalytic reduction of Ag+ ions in aqueous solution of silver nitrate salt on TiO2 nanoparticles deposited on SiO2 beads. In the first part, the efficiency of the plasma alone process is discussed, in terms of pollutant removal and CO and CO2 production. The main pathways of pollutant degradation and COx production are discussed. In the second part, CH3CHO removal as well as COx production is studied as a function of the photocatalytic reduction time of Ag+ ions, which is related to the deposited silver mass. Finally, pollutant removal pathways, including homogeneous chemistry in the plasma phase and heterogeneous chemistry on the surface, are discussed.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (133 K)Download as PowerPoint slideHighlights► Atmospheric pressure plasma coupled with a fluidized bed for acetaldehyde degradation. ► Low power consumption (500 mW) and room temperature process. ► Silver based nanostructured bed increase the degradation efficiency. ► CO selectivity strongly influenced by the fluidized bed immersed in the plasma region.

Keywords
Plasma; Fluidized bed; Nano-structured catalyst; Volatile organic compounds; Degradation
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Acetaldehyde removal using a diphasic process coupling a silver-based nano-structured catalyst and a plasma at atmospheric pressure
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 208, 1 June 2013, Pages 82–89
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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