Next Article in Journal
Ionic Liquids as Bifunctional Cosolvents Enhanced CO2 Conversion Catalysed by NADH-Dependent Formate Dehydrogenase
Next Article in Special Issue
Plasma Oxidation of H2S over Non-stoichiometric LaxMnO3 Perovskite Catalysts in a Dielectric Barrier Discharge Reactor
Previous Article in Journal
Effect of Alkali-Doping on the Performance of Diatomite Supported Cu-Ni Bimetal Catalysts for Direct Synthesis of Dimethyl Carbonate
Previous Article in Special Issue
DBD Plasma-ZrO2 Catalytic Decomposition of CO2 at Low Temperatures
Open AccessArticle

Plasma-Catalytic Mineralization of Toluene Adsorbed on CeO2

LPP, Ecole Polytechnique, UPMC, CNRS, Université Paris-Sud 11, 91128 Palaiseau CEDEX, France
IMT Lille Douai, University Lille, SAGE, 59000 Lille, France
Authors to whom correspondence should be addressed.
Catalysts 2018, 8(8), 303;
Received: 6 July 2018 / Revised: 23 July 2018 / Accepted: 24 July 2018 / Published: 27 July 2018
(This article belongs to the Special Issue Plasma Catalysis)
In the context of coupling nonthermal plasmas with catalytic materials, CeO2 is used as adsorbent for toluene and combined with plasma for toluene oxidation. Two configurations are addressed for the regeneration of toluene saturated CeO2: (i) in plasma-catalysis (IPC); and (ii) post plasma-catalysis (PPC). As an advanced oxidation technique, the performances of toluene mineralization by the plasma-catalytic systems are evaluated and compared through the formation of CO2. First, the adsorption of 100 ppm of toluene onto CeO2 is characterized in detail. Total, reversible and irreversible adsorbed fractions are quantified. Specific attention is paid to the influence of relative humidity (RH): (i) on the adsorption of toluene on CeO2; and (ii) on the formation of ozone in IPC and PPC reactors. Then, the mineralization yield and the mineralization efficiency of adsorbed toluene are defined and investigated as a function of the specific input energy (SIE). Under these conditions, IPC and PPC reactors are compared. Interestingly, the highest mineralization yield and efficiency are achieved using the in-situ configuration operated with the lowest SIE, that is, lean conditions of ozone. Based on these results, the specific impact of RH on the IPC treatment of toluene adsorbed on CeO2 is addressed. Taking into account the impact of RH on toluene adsorption and ozone production, it is evidenced that the mineralization of toluene adsorbed on CeO2 is directly controlled by the amount of ozone produced by the discharge and decomposed on the surface of the coupling material. Results highlight the key role of ozone in the mineralization process and the possible detrimental effect of moisture. View Full-Text
Keywords: toluene; CeO2; mineralization; in plasma-catalysis; post plasma-catalysis; relative humidity toluene; CeO2; mineralization; in plasma-catalysis; post plasma-catalysis; relative humidity
Show Figures

Figure 1

MDPI and ACS Style

Jia, Z.; Wang, X.; Foucher, E.; Thevenet, F.; Rousseau, A. Plasma-Catalytic Mineralization of Toluene Adsorbed on CeO2. Catalysts 2018, 8, 303.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

Back to TopTop