Coupling bimetallic Ni-Fe catalysts and nanosecond pulsed plasma for synergistic low-temperature CO2 methanation

Numerical investigation on the heterogeneous pulsed dielectric barrier discharge plasma catalysis for CO2 hydrogenation at atmospheric pressure: Effects of Ni and Cu catalysts on the selectivity conversions to CH4 and CH3OH

“…Long-lived neutral species densities are plotted in Figure 1e, the temporal evolution of them exhibits a rising trend until a balance is reached between loss and production. It is indicated that CO is the most abundant C-containing product, which is consistent with the final products reported by Gao et al [18] The results of the experiment in Reference [18] have shown that the plasma activation without a catalyst is able to convert CO 2 into CO and trace CH 4 , while the CO was still the main product. However, the high added-value products, such as CH 4 and CH 3 OH, have lower yields in the plasma-only conversion.…”

“…[15,16] Combining gas phase plasma reactions and the catalyst surface reactions, the synergistic effect of heterogeneous pulsed DBD plasma catalysis is an emerging alternative to the conventional catalytic route. [17] In our previous research, [18] we have developed a plasma catalytic system coupled pulsed DBD plasma with Ni-Fe bimetallic catalyst and achieved CO 2 conversion of 67.5% and CH 4 selectivity of 99% as well as the energy efficiency of 57 823 μg/kJ. We found that the accelerated low-temperature activity of CH 4 production can be attributed to the promoted reducibility of the active Ni particles interacted adjacent Fe.…”

“…To ensure the rationality of the initial parameter setting in the simulation model, we adopt the equivalent parameters in the experimental study of Gao et al [18] The reduced electric field E/N is set to the square waveform with an amplitude of 85 Td, the pulse width of 100 ns, and frequency of 10 kHz. The initial ratio of CO 2 /H 2 is set to 1/4.…”

Nanosecond‐pulsed microbubble plasma reactor for plasma‐activated water generation and bacterial inactivation

“…Cold atmospheric pressure plasmas (CAPPs) have been successfully applied in biomedicine, [1][2][3] energy conversion, [4][5][6] agriculture, [7,8] insulation materials processing, [9,10] and some emerging industrial applications. [11,12] Plasma activated water (PAW), derived from the interaction between CAPPs and liquids (e.g., water or solutions), is a green prospective solution for a wide range of biological applications, from water purification to biomedicine.…”

Real‐time measurement of axial temperature in a coaxial dielectric barrier discharge reactor and synergistic effect evaluation for in‐plasma catalytic CO2 reduction

“…However, the measurement of catalyst-bed temperature for IPC is challenging due to the electromagnetic interference and plasma luminescence. [27] Hence, the temperatures of the reactor outer wall (T w ) [28][29][30][31] or the gas leaving the plasma region [32,33] were mostly used to evaluate the synergistic effect.…”