Plasma-catalytic hybrid reactor: Application to methane removal

A review of plasma-assisted catalytic conversion of gaseous carbon dioxide and methane into value-added platform chemicals and fuels

“…On the other hand, with a Fe 2 O 3 -CuO/g-Al 2 O 3 catalyst, CH 3 OH yield was 68% higher than that of pure Al 2 O 3 at 200 C. Whilst in the case of a two stage plasma reactor, the maximum CH 3 OH yield achieved with the Fe 2 O 3 -CuO/g-Al 2 O 3 catalyst was only 21% higher at a temperature of 150 C. By introducing the catalyst in the plasma zone, it was possible to reduce the unwanted ozone emission in the outlet. 19,244 However, the catalyst embedded in the discharge zone was more prone to carbon deposition and consequent deactivation. 243 Some researchers currently focus on the efficiency of various plasma catalytic systems to oxidize CH 4 into liquid fuels in the presence of oxides of nitrogen like N 2 O.…”

The Potential of Non-thermal Plasmas in the Preparation of Supported Metal Catalysts for Fuel Conversion in Automotive Systems: A Literature Overview

“…This latter phenomenon is explained by the fact that plasma modifies the physicochemical characteristics of the catalyst surface, increasing the adsorption of molecules onto it due to electrostatic forces over a large surface area (Chen et al, 2017). As one example of the synergistic effects between plasma and catalyst, Hammer et al (2004) reported that steam reforming of methane can be performed through plasma-catalysis using Ni-catalyst pellets at temperatures around 200 • C. Huu et al (2015) observed an improvement in CH 4 conversion through plasma-catalyst coupling by a factor of 3 at 300 • C and 1.4 at 350 • C compared to conventional thermal catalytic experiments.…”

“…The second effect is the influence of the catalyst on plasma configuration, which may consist of changing the electric field distribution, temperature, and species present in the discharge (Huu et al, 2015;Chen et al, 2017). Therefore, the use of highadsorption catalysts in pollutant abatement systems may increase retention time by increasing their localized concentration of key species.…”

Plasma Catalytical Reactors for Atmospheric Gas Conversions

“…To compare the plasma catalytic treatment with the thermal catalytic treatment, the packed-bed reactor can be placed in an oven. A comparison is conducted by Huu et al, who investigated the decomposition of methane by oxidation in an DBD-plasma catalytic hybrid reactor [16]. The used Pd/g-Al 2 O 3 catalyst does not convert any methane at temperatures lower than 450°C without plasma.…”