Gliding Arc Plasmatron: Providing an Alternative Method for Carbon Dioxide Conversion

Ramakers, Marleen; Trenchev, Georgi; Heijkers, Stijn; Wang, Weizong; Bogaerts, Annemie

doi:10.1002/cssc.201700589

Cited by 130 publications

(202 citation statements)

References 77 publications

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“…The energy efficiency was calculated for the best conditions (CO 2 :diluent gas = 1:2). It was reported that the energy efficiency of DBD plasma is lesser than gliding arc and microwave plasma system [29]. The curve indicates decreasing energy efficiency with increasing discharge power, which is in agreement with earlier observations [24,27].…”

Section: Optical Emission Spectra (Oes)supporting

confidence: 91%

“…CO2 splitting may be initiated by the electron impact excitation from lowest vibrational level to highest vibrational level followed by vibrational-vibrational collision [29,30]. The …”

Section: Optical Emission Spectra (Oes)mentioning

confidence: 99%

“…CO 2 splitting may be initiated by the electron impact excitation from lowest vibrational level to highest vibrational level followed by vibrational-vibrational collision [29,30]. The optical emission during reaction with glass beads-packed condition was recorded to understand the excited species formed inside the plasma (Figure 9).…”

Section: Optical Emission Spectra (Oes)mentioning

confidence: 99%

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DBD Plasma Assisted CO2 Decomposition: Influence of Diluent Gases

2017

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Carbon dioxide (CO 2 ) partial reduction to carbon monoxide (CO) and oxygen has been conducted in a dielectric barrier discharge reactor (DBD) operating a packed bed configuration and the results are compared with that of no packing condition. The effect of diluent gas is studied to understand the influence on dielectric strength of the plasma gas on CO 2 splitting, with the objective of obtaining the best CO selectivity and high energy efficiency. Typical results indicated that among N 2 , He and Ar gases, Ar showed the best decomposition efficiency. Glass beads packing has a strong influence on the performance, probably due to the enhanced field strength due to dielectric nature of the packed material. In a similar manner, Ar mole ratio in the gas mixture also played a significant role, where the maximum CO 2 conversion of 19.5% was obtained with packed DBD at CO 2 :Ar ratio 1:2. The best CO yield (16.8%) was also obtained under the same conditions. The highest energy efficiency was found to be 0.945 mmol/kJ. The activated species formed inside the CO 2 plasma were identified by optical emission spectroscopy.

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Section: Optical Emission Spectra (Oes)supporting

confidence: 91%

“…CO2 splitting may be initiated by the electron impact excitation from lowest vibrational level to highest vibrational level followed by vibrational-vibrational collision [29,30]. The …”

Section: Optical Emission Spectra (Oes)mentioning

confidence: 99%

Section: Optical Emission Spectra (Oes)mentioning

confidence: 99%

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DBD Plasma Assisted CO2 Decomposition: Influence of Diluent Gases

2017

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“…[9] Ah igh voltage was applied to the GAP by means of ad irect current power source. This yielded ar eactor volume of 3.82 cm 3 .T he setup can be used with different anode diameters, but the present configuration yielded the most pronounced reverse vortex flow,a sr evealed by computational fluid dynamics simulations, and provided the best CO 2 conversion and energy efficiency.…”

Section: Methodsmentioning

confidence: 99%

Dry Reforming of Methane in a Gliding Arc Plasmatron: Towards a Better Understanding of the Plasma Chemistry

et al. 2017

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Dry reforming of methane (DRM) in a gliding arc plasmatron is studied for different CH fractions in the mixture. The CO and CH conversions reach their highest values of approximately 18 and 10 %, respectively, at 25 % CH in the gas mixture, corresponding to an overall energy cost of 10 kJ L (or 2.5 eV per molecule) and an energy efficiency of 66 %. CO and H are the major products, with the formation of smaller fractions of C H (x=2, 4, or 6) compounds and H O. A chemical kinetics model is used to investigate the underlying chemical processes. The calculated CO and CH conversion and the energy efficiency are in good agreement with the experimental data. The model calculations reveal that the reaction of CO (mainly at vibrationally excited levels) with H radicals is mainly responsible for the CO conversion, especially at higher CH fractions in the mixture, which explains why the CO conversion increases with increasing CH fraction. The main process responsible for CH conversion is the reaction with OH radicals. The excellent energy efficiency can be explained by the non-equilibrium character of the plasma, in which the electrons mainly activate the gas molecules, and by the important role of the vibrational kinetics of CO . The results demonstrate that a gliding arc plasmatron is very promising for DRM.

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“…[15][16][17] Nonthermal plasma (NTP) approach has been used as an alternative to thermocatalytic methods. Various NTP systems such as corona discharges, [18] atmospheric plasma jet, [19] gliding arcs, [20][21][22] glow discharge, [23] and dielectric barrier discharges (DBDs) [24][25][26] have been tested for DRM and CO 2 mitigation. Among all, DBD attracted more attention due to the uniform distribution of microdischarges, presence of high energetic electrons, capability of initiating the reaction under ambient conditions, etc.…”

Section: Introductionmentioning

confidence: 99%

Dry Reforming of Methane in DBD Plasma over Ni‐Based Catalysts: Influence of Process Conditions and Support on Performance and Durability

et al. 2019

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The conversion of greenhouse gases, H2 and CO selectivity, H2/CO ratio, and carbon formation in the dry reforming reaction over Ni‐supported ZSM‐5, Al2O3, and TiO2 are tested under thermal, plasma, and plasma–thermal conditions. It is observed that the dielectric nature, specific surface area, and acid‐base properties of the support influence the performance during the DRM reaction. Typical results indicate that the best activity and syngas yield are achieved with 15Ni/Al2O3 under plasma conditions, possibly due to the high dielectric constant and surface area of Al2O3 and nanosize of Ni. In the thermal condition, the highest conversion of 73% and 68% for CH4 and CO2, respectively, is achieved over 15Ni/ZSM‐5 at 500 °C. Plasma‐assisted thermal conditions provide the highest conversion due to the activation of reactants and their partial conversion in the plasma zone before entering into the catalytic zone. The plasma‐assisted thermocatalytic conversions of CH4 and CO2 reach the best values of 76% and 71%, respectively, on 15Ni/ZSM‐5. Under the same conditions, 68% and 65% conversion of CH4 and CO2, respectively, is achieved with 15Ni/Al2O3 where the selectivity for H2 and CO is 45% and 58%, respectively.

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Gliding Arc Plasmatron: Providing an Alternative Method for Carbon Dioxide Conversion

Cited by 130 publications

References 77 publications

DBD Plasma Assisted CO2 Decomposition: Influence of Diluent Gases

DBD Plasma Assisted CO2 Decomposition: Influence of Diluent Gases

Dry Reforming of Methane in a Gliding Arc Plasmatron: Towards a Better Understanding of the Plasma Chemistry

Dry Reforming of Methane in DBD Plasma over Ni‐Based Catalysts: Influence of Process Conditions and Support on Performance and Durability

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