Abatement of fluorinated compounds using a 2.45GHz microwave plasma torch with a reverse vortex plasma reactor

Kim, J.H.; Cho, C.H.; Shin, DongHun; Hong, Yong Cheol; Shin, Yong Wook

doi:10.1016/j.jhazmat.2015.03.016

Cited by 34 publications

(4 citation statements)

References 17 publications

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“…In order to increase the efficiency of the SF6 decomposition, Kim et al designed a reverse vortex microwave plasma reactor [261]. For SF6 abatement, they used air as an additive gas in microwave plasma reactor along with N2/SF6 gas mixture.…”

Section: Decomposition Of Fluorinated Gasesmentioning

confidence: 99%

Plasma assisted decomposition and reforming of greenhouse gases: A review of current status and emerging trends

Vadikkeettil

Yugeswaran

Murugan

et al. 2022

Renewable and Sustainable Energy Reviews

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Section: Decomposition Of Fluorinated Gasesmentioning

confidence: 99%

Plasma assisted decomposition and reforming of greenhouse gases: A review of current status and emerging trends

Vadikkeettil

Yugeswaran

Murugan

et al. 2022

Renewable and Sustainable Energy Reviews

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“…However, this method requires harsh reaction conditions and is expensive. Other treatments, including photodegradation, electrolytic methods, plasma methods and catalytic decomposition, are also used to remove SF 6 [5][6][7]. The use of catalysts with high efficiency and selectivity is necessary to achieve ecofriendly decomposition of SF 6 [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The use of catalysts with high efficiency and selectivity is necessary to achieve ecofriendly decomposition of SF 6 [8][9][10]. However, the removal rate and product selectivity of SF 6 have not reached the level of industrial application. Besides, the reaction mechanism can be illustrated clearly by theoretical calculations for more efficient catalyst screening, and has been paid little attention so far [11,12].…”

Section: Introductionmentioning

confidence: 99%

Mixed-terminal MXenes react with SF₆ in aqueous solution: reaction mechanism and pathway

Zeng,

Guo,

Chen

et al. 2023

J. Phys. D: Appl. Phys.

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Searching for an eco-friendly treatment for strong greenhouse gas SF6 has become a global hot issue. Herein, mixed terminal Ti3C2Tx MXene catalyzing SF6 conversion in aqueous solution was firstly explored. The catalytic network on realistic Ti3C2Tx was constructed. By theoretical calculations, target products and microscopic reaction mechanism were studied. Firstly, SF6 exhibited different degrees of chemisorption on the constructed Ti3C2Tx surfaces of three varying terminal proportions, with different terminals showing synergistic effects. Secondly, taking the effect of H2O and surface hydroxyl into account, the catalytic conversion system of SF6 on Ti3C2(OH)0.66O1.33 surface was constructed, containing twenty-five sub-reactions with H2S as one of the final products. SF6 went through a successive defluorination on Ti3C2(OH)0.66O1.33 surface to form low fluorine sulfide SFx (x=5, 4, 3, 2, 1), with energy of 80.685 kcal·mol-1 released during the whole process. The energy barriers of all the SF6 decomposition sub-reactions were significantly lower than that in free space. Besides, O terminals were regarded as potential hydroxyl terminals in aqueous solution, which continuously provided active hydroxyl groups for Ti3C2(OH)0.66O1.33 surface. Thus, SF6 conversion in aqueous solution won’t result in deactivation of Ti3C2Tx catalyst. This work provided a theoretical basis for MXene to catalyze SF6 decomposition in an efficient way.

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“…Until now, many NTP methods have been used to degrade SF 6 gas, including corona discharge, microwave discharge, radio frequency (RF) discharge, and dielectric barrier discharge (DBD) [28][29][30][31][32][33][34]. Among these discharge methods, microwave discharge and RF discharge can degrade a relative high concentration of SF 6 and reach a high degradation rate, but the energy yield is low.…”

Section: Introductionmentioning

confidence: 99%

Plasma-assisted abatement of SF₆ in a dielectric barrier discharge reactor: investigation of the effect of packing materials

Cui

Zhang

Tian

et al. 2019

J. Phys. D: Appl. Phys.

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The greenhouse gas hexafluoride (SF6) and its degradation is a research hotspot in the environmental field. In a double-layer dielectric barrier discharge reactor, the degradation process of SF6 was studied when packed in glass beads or γ-Al2O3 pellets as well as with no packing system. The results show that the packing materials changed the physical characteristics of the discharge, increasing the equivalent capacitance and discharge power and leading to the generation of more active particles and high-energy electrons. Additionally, the two packing materials effectively improved the degradation removal efficiency (DRE) and energy yield (EY) of SF6. In the γ-Al2O3 system, 2% SF6 gas obtained a maximum DRE of 85.97% with a 110 W input power and the EY reached 9.17 g kWh−1, far exceeding the case without packing. Moreover, the glass bead packing had no obvious effect on the degradation products, while the packing of γ-Al2O3 particles promoted SO2 production and reduced the formation of SOF2, SO2F2 and SOF4. Meanwhile, in the γ-Al2O3 system, the yield of SO2 increased with increasing input power and some undesirable products such as SO2F2 were reduced. These results show that the addition of suitable packing materials such as γ-Al2O3 pellets can effectively promote the harmless degradation of SF6.

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Abatement of fluorinated compounds using a 2.45GHz microwave plasma torch with a reverse vortex plasma reactor

Cited by 34 publications

References 17 publications

Plasma assisted decomposition and reforming of greenhouse gases: A review of current status and emerging trends

Plasma assisted decomposition and reforming of greenhouse gases: A review of current status and emerging trends

Mixed-terminal MXenes react with SF₆ in aqueous solution: reaction mechanism and pathway

Plasma-assisted abatement of SF₆ in a dielectric barrier discharge reactor: investigation of the effect of packing materials

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Abatement of fluorinated compounds using a 2.45GHz microwave plasma torch with a reverse vortex plasma reactor

Cited by 34 publications

References 17 publications

Plasma assisted decomposition and reforming of greenhouse gases: A review of current status and emerging trends

Plasma assisted decomposition and reforming of greenhouse gases: A review of current status and emerging trends

Mixed-terminal MXenes react with SF6 in aqueous solution: reaction mechanism and pathway

Plasma-assisted abatement of SF6 in a dielectric barrier discharge reactor: investigation of the effect of packing materials

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Product

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Mixed-terminal MXenes react with SF₆ in aqueous solution: reaction mechanism and pathway

Plasma-assisted abatement of SF₆ in a dielectric barrier discharge reactor: investigation of the effect of packing materials