Carbon dioxide conversion by means of coplanar dielectric barrier discharges

Schiorlin, Milko; Klink, Rouven; Brandenburg, Ronny

doi:10.1051/epjap/2016160073

Cited by 10 publications

(7 citation statements)

References 10 publications

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“…Since this mixture represents a model of prebiotic atmosphere of the Earth, it is interesting for the study of amino acids formation and for the verification of the theory of the origins of life. Some recent works have studied CO 2 -N 2 mixtures, with a focus on the entry problems [59][60][61][62][63], the characterisation of electrical discharges in CO 2 /Ar/N 2 mixtures [31,[64][65][66] and the CO 2 conversion [17,64,[67][68][69][70][71].…”

Section: Introductionmentioning

confidence: 99%

Validation of non-equilibrium kinetics in CO₂–N₂plasmas

Fromentin¹,

Silva

Dias³

et al. 2023

Plasma Sources Sci. Technol.

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This work explores the effect of N2 addition on CO2 dissociation and on the vibrational kinetics of CO2 and CO under various non-equilibrium plasma conditions. A self-consistent kinetic model, previously validated for pure CO2 and CO2-O2 discharges, is further extended by adding the kinetics of N2. The vibrational kinetics considered include levels up to v = 10 for CO, v = 59 for N2 and up to v 1 = 2 and v 2 = v 3 = 5, respectively for the symmetric stretch, bending and asymmetric stretch modes of CO2, and account for electron-impact excitation and de-excitation (e-V), vibration-to-translation (V-T) and vibration-to-vibration energy exchange (V-V) processes. The kinetic scheme is validated by comparing the model predictions with recent experimental data measured in a DC glow discharge operating in pure CO2 and in CO2-N2 mixtures, at pressures in the range 0.6 - 4 Torr (80.00 - 533.33 Pa) and a current of 50 mA. The experimental results show a higher vibrational temperature of the different modes of CO2 and CO and an increased dissociation fraction of CO2, that can reach values as high as 70 %, when N2 is added to the plasma. On the one hand, the simulations suggest that the former effect is the result of the CO2-N2 and CO-N2 V-V transfers and the reduction of quenching due to the decrease of atomic oxygen concentration; on the other hand, the dilution of CO2 and dissociation products, CO and O2, reduces the importance of back reactions and contributes to the higher CO2 dissociation fraction with increased N2 content in the mixture, while the N2(B3Πg) electronically excited state further enhances the CO2 dissociation.

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Section: Introductionmentioning

confidence: 99%

Validation of non-equilibrium kinetics in CO₂–N₂plasmas

Fromentin¹,

Silva

Dias³

et al. 2023

Plasma Sources Sci. Technol.

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“…Furthermore, N 2 addition might be interesting per se, as it can have a positive repercussion on CO 2 dissociation. Some recent works have studied CO 2 -N 2 mixtures, motivated mostly by reentry problems [12,13] and by their application to CO 2 conversion [14][15][16][17]. In the latter case, the reason for considering the effect of N 2 is twofold.…”

Section: Introductionmentioning

confidence: 99%

“…The effect it has on CO 2 vibrations is well-known from the studies of CO 2 -N 2 maser/laser systems in the 60s [19][20][21][22], reporting that the selective excitation of the asymmetric mode of CO 2 by nearly resonant vibrational energy transfers from N 2 enhances lasing power. Current research on plasma-based CO 2 conversion in presence of N 2 is done with dielectric barrier discharges (DBD) [14][15][16] and microwave plasmas (MW) [17], with the main focus on increasing the CO 2 conversion rate and energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

A rotational Raman study under non-thermal conditions in pulsed CO₂–N₂ and CO₂–O₂ glow discharges

Grofulović

Klarenaar

Guaitella

et al. 2019

Plasma Sources Sci. Technol.

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This work employs in situ rotational Raman spectroscopy to study the effect of N 2 and O 2 addition to CO 2 in pulsed glow discharges in the mbar range. The spatiotemporally resolved measurements are performed in CO 2 and 25%, 50% and 75% of N 2 or O 2 admixture, in a 5-10ms on-off cycle, 50mA plasma current and 6.7mbar total pressure. The rotational temperature profile is not affected by adding N 2 , ranging from 400to 850K from start to end of the discharge pulse, while the addition of O 2 decreases the temperature at corresponding time points. Molecular number densities of CO 2 , CO, O 2 and N 2 are determined, showing the spatial homogeneity along the axis of the reactor and uniformity during the cycle. The measurements in the N 2 containing mixtures show that CO 2 conversion factor α increases from 0.15 to 0.33 when the content of N 2 is increased from 0% to 75%, demonstrating the potential of N 2 addition to enhance the vibrational pumping of CO 2 and its beneficial effect on CO 2 dissociation. Furthermore, the influence of admixtures on CO 2 vibrations is examined by analysing the vibrationally averaged nuclear spin degeneracy. The difference between the fitted odd averaged degeneracy and the calculated odd degeneracy assuming thermal conditions increases with the addition of N 2 , demonstrating the growth of vibrational temperatures in CO 2 . On the other hand, the addition of O 2 leads to a decrease of α, which might be attributed to quenched vibrations of CO 2 , and/or to the influence of the back reaction in the presence of O 2 .

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“…In addition, the highest CO yield of 0.7% was obtained at a specific input energy of 0.210 kJ/L: a clear indication that energy efficiency can be increased by the use of diluted CO 2 in plasma operation [277]. The highest energy efficiency achieved so far for MW is 90% at a pressure range of 100 Torr-200 Torr [55].…”

Section: Interactions and Synergies Between Non-thermal Plasma And Catalysismentioning

confidence: 92%

A Review of Non-Thermal Plasma Technology: A novel solution for CO2 conversion and utilization

Adwek

Shen

Craven

et al. 2021

Renewable and Sustainable Energy Reviews

319

136

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Recently, carbon dioxide (CO 2 ) conversion into higher-value platform chemicals and synthetic fuels has drawn great attention as a result of global warming. Non-thermal plasma (NTP)-catalytic CO 2 conversion has emerged to significantly reduce the reaction temperature. However, this technology requires a paradigm shift in process design to enhance plasma-catalytic performance. CO 2 conversion using NTP and catalysts has great potential to increase reaction efficiencies due to the synergetic effects between the plasma and catalysts that can provide mutual improvement in their performances. It is crucial to present the recent progress in CO 2 conversion and utilization whilst specifying a research prospects framework and providing future research directions in both industries and laboratories.Herein, a review of encouraging research achievements in CO 2 conversion and utilization using NTP in recent years is provided. The topics reviewed in this work are recent progress in different NTP sources in relation to product selectivity, conversion, and energy efficiency; plasma-based CO 2 reactions and applications; CO 2 conversion integrated with CO 2 capture; and process development of NTP in terms of potential large-scale applications processes. The high market value of the possible products from the NTP process, including chemicals and fuels, make the commercialization of the process feasible. Developing a suitable catalyst with effective sensitivities and performance under intricate conditions can improve the selectivity of these carbon-based liquid chemicals. There is a need for more studies to be performed in this field.

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Carbon dioxide conversion by means of coplanar dielectric barrier discharges

Cited by 10 publications

References 10 publications

Validation of non-equilibrium kinetics in CO₂–N₂plasmas

Validation of non-equilibrium kinetics in CO₂–N₂plasmas

A rotational Raman study under non-thermal conditions in pulsed CO₂–N₂ and CO₂–O₂ glow discharges

A Review of Non-Thermal Plasma Technology: A novel solution for CO2 conversion and utilization

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Carbon dioxide conversion by means of coplanar dielectric barrier discharges

Cited by 10 publications

References 10 publications

Validation of non-equilibrium kinetics in CO2–N2plasmas

Validation of non-equilibrium kinetics in CO2–N2plasmas

A rotational Raman study under non-thermal conditions in pulsed CO2–N2 and CO2–O2 glow discharges

A Review of Non-Thermal Plasma Technology: A novel solution for CO2 conversion and utilization

Contact Info

Product

Resources

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Validation of non-equilibrium kinetics in CO₂–N₂plasmas

Validation of non-equilibrium kinetics in CO₂–N₂plasmas

A rotational Raman study under non-thermal conditions in pulsed CO₂–N₂ and CO₂–O₂ glow discharges