1. Acetaldehyde removal using a diphasic process coupling a silver-based nano-structured catalyst and a plasma at atmospheric pressure
- Author
-
Xavier Duten, Andrei Kanaev, S. Touchard, Khaled Hassouni, Arlette Vega-González, Siteng Tieng, Mounir Ben Amar, and Zixian Jia
- Subjects
Silver nitrate ,chemistry.chemical_compound ,Aqueous solution ,chemistry ,Fluidized bed ,Inorganic chemistry ,Photocatalysis ,Nanoparticle ,General Chemistry ,Dielectric barrier discharge ,Catalysis ,Silver nanoparticle - 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 CH 3 CHO) is presented. The deposition of silver nanoparticles has been realized by photocatalytic reduction of Ag + ions in aqueous solution of silver nitrate salt on TiO 2 nanoparticles deposited on SiO 2 beads. In the first part, the efficiency of the plasma alone process is discussed, in terms of pollutant removal and CO and CO 2 production. The main pathways of pollutant degradation and CO x production are discussed. In the second part, CH 3 CHO removal as well as CO x 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.
- Published
- 2013
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