Manganese oxide octahedral molecular sieve ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Manganese oxide octahedral molecular sieve K-OMS-2 as catalyst in post plasma-catalysis for trichloroethylene degradation in humid air
Author(s) :
Nguyen Dinh, M.T. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Dai Hoc Da Nang - University of Danang [Vietnam]
Giraudon, Jean-Marc [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS] (VALID)
Vandenbroucke, Arne M. [Auteur]
Universiteit Gent = Ghent University [UGENT]
Morent, Rino [Auteur]
Universiteit Gent = Ghent University [UGENT]
De Geyter, Nathalie [Auteur]
Universiteit Gent = Ghent University [UGENT]
Lamonier, Jean-Francois [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS] (VALID)
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Dai Hoc Da Nang - University of Danang [Vietnam]
Giraudon, Jean-Marc [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS] (VALID)
Vandenbroucke, Arne M. [Auteur]
Universiteit Gent = Ghent University [UGENT]
Morent, Rino [Auteur]
Universiteit Gent = Ghent University [UGENT]
De Geyter, Nathalie [Auteur]
Universiteit Gent = Ghent University [UGENT]
Lamonier, Jean-Francois [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS] (VALID)
Journal title :
Journal of Hazardous Materials
Volume number :
314
Pages :
88-94
Publication date :
2016-08-15
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
The total oxidation of trichloroethylene (TCE) in air at low relative humidity (RH = 10%) in the presence of CO2 (520 ppmv) was investigated in function of energy density using an atmospheric pressure negative DC luminescent ...
Show more >The total oxidation of trichloroethylene (TCE) in air at low relative humidity (RH = 10%) in the presence of CO2 (520 ppmv) was investigated in function of energy density using an atmospheric pressure negative DC luminescent glow discharge combined with a cryptomelane catalyst positioned downstream of the plasma reactor at a temperature of 150 °C. When using Non-Thermal Plasma (NTP) alone, it is found a low COx (x = 1–2) yield in agreement with the detection of gaseous polychlorinated by-products in the outlet stream as well as ozone which is an harmful pollutant. Introduction of cryptomelane enhanced trichloroethylene removal, totally inhibited plasma ozone formation and increased significantly the COx yield. The improved performances of the hybrid system were mainly ascribed to the total destruction of plasma generated ozone on cryptomelane surface to produce active oxygen species. Consequently these active oxygen species greatly enhanced the abatement of the plasma non-reacted TCE and completely destroyed the hazardous plasma generated polychlorinated intermediates. The facile redox of Mn species associated with oxygen vacancies and mobility as well as the textural properties of the catalyst might also contribute as a whole to the efficiency of the process.Show less >
Show more >The total oxidation of trichloroethylene (TCE) in air at low relative humidity (RH = 10%) in the presence of CO2 (520 ppmv) was investigated in function of energy density using an atmospheric pressure negative DC luminescent glow discharge combined with a cryptomelane catalyst positioned downstream of the plasma reactor at a temperature of 150 °C. When using Non-Thermal Plasma (NTP) alone, it is found a low COx (x = 1–2) yield in agreement with the detection of gaseous polychlorinated by-products in the outlet stream as well as ozone which is an harmful pollutant. Introduction of cryptomelane enhanced trichloroethylene removal, totally inhibited plasma ozone formation and increased significantly the COx yield. The improved performances of the hybrid system were mainly ascribed to the total destruction of plasma generated ozone on cryptomelane surface to produce active oxygen species. Consequently these active oxygen species greatly enhanced the abatement of the plasma non-reacted TCE and completely destroyed the hazardous plasma generated polychlorinated intermediates. The facile redox of Mn species associated with oxygen vacancies and mobility as well as the textural properties of the catalyst might also contribute as a whole to the efficiency of the process.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Remédiation et matériaux catalytiques (REMCAT)
Submission date :
2019-09-25T14:04:42Z
2024-04-22T11:53:56Z
2024-04-22T11:53:56Z