Post-plasma catalysis for trichloroethylene abatement with ce-doped birnessite downstream dc corona discharge reactor
Catalysts, ISSN: 2073-4344, Vol: 11, Issue: 8
2021
- 2Citations
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
Trichloroethylene (TCE) removal was investigated in a post-plasma catalysis (PPC) configuration in nearly dry air (RH = 0.7%) and moist air (RH = 15%), using, for non-thermal plasma (NTP), a 10-pin-to-plate negative DC corona discharge and, for PPC, CeMn as a catalyst, calcined at 400C (CeMn-400) or treated with nitric acid (CeMn-AT). One of the key points was to take advantage of the ozone emitted from NTP as a potential source of active oxygen species for further oxidation, at a very low temperature (100C), of untreated TCE and of potential gaseous hazardous by-products from the NTP. The plasma-assisted CeMn-AT catalyst presented the best CO yield in dry air, with minimization of the formation of gaseous chlorinated by-products. This result was attributed to the high level of oxygen vacancies with a higher amount of Mn, improved specific surface area and strong surface acidity. These features also allow the promotion of ozone decomposition efficiency. Both catalysts exhibited good stability towards chlorine. CeMn-AT tested in moist air (RH = 15%) showed good stability as a function of time, indicating good water tolerance also.
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