Dependence of humidified air plasma discharge performance in commercial honeycomb monoliths on the configuration and key parameters of the reactor

Saud, Shirjana; Nguyen, Duc Ba; Bhattarai, Roshan Mangal; Matyakubov, Nosir; Heo, Iljeong; Kim, Sang-Joon; Kim, Young Jin; Lee, Jin Hee; Mok, Young Sun

doi:10.1016/j.jhazmat.2020.124024

Cited by 11 publications

(16 citation statements)

References 37 publications

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“…46 A possible explanation for this is the improved electrical conductivity/capacitance of the honeycomb monolith owing to the presence of metals on the surface of the coated layer, as discussed above. 47 3.3. Oxidation of NO to NO 2 in the Honeycomb Discharge.…”

Section: Methodssupporting

confidence: 93%

“…The honeycomb plasma discharge performance strongly depends on the physicochemical properties of the channel surface . SEM images of the cross-section of the honeycomb channel cell is shown in Figure a,b; these images show the presence of the catalyst coating layer (the corners of the square cells are rounded).…”

Section: Resultsmentioning

confidence: 99%

“…SEM image of a channel cell (a, b) channel cross-section and (c, d) surface of the channel, respectively. The images shown in (a–c) are reprinted with permission from Elsevier …”

Section: Resultsmentioning

confidence: 99%

“…(a) SEM image of a selected cross-section of the channel, (b–f) EDS results for Al, O, Si, Mg, and Pd, respectively; and (g) map sum spectrum. The images shown in (b–g) are reprinted with permission from Elsevier …”

Section: Resultsmentioning

confidence: 99%

“…The honeycomb plasma discharge performance strongly depends on the physicochemical properties of the channel surface. 47 SEM images of the cross-section of the honeycomb channel cell is shown in Figure 2a,b; these images show the presence of the catalyst coating layer (the corners of the square cells are rounded). The thickness of the coating layer decreased from the corners to the middle of the sides of the square cells, The dependence of the plasma discharge characteristics on the applied voltage was examined at 11 to 25 kV with water vapor content of 1.2 or 2.0%, as shown in Figure 5.…”

Section: Methodsmentioning

confidence: 99%

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High-Throughput NO_x Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

Nguyen

Matyakubov

Saud

et al. 2021

Environ. Sci. Technol.

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A two-stage plasma catalyst system for highthroughput NO x removal was investigated. Herein, the plasma stage involved the large-volume plasma discharge of humidified gas and was carried out in a sandwich-type honeycomb monolith reactor consisting of a commercial honeycomb catalyst (50 mm high; 93 mm in diameter) located between two parallel perforated disks that formed the electrodes. The results demonstrated that, in the plasma stage, the reduction of NO x did not occur at room temperature; instead, NO was only oxidized to NO 2 and n-heptane to oxygenated hydrocarbons. The oxidation of NO and n-heptane in the honeycomb plasma discharge state was largely affected by the humidity of the feed gas. Furthermore, the oxidation of NO to NO 2 occurs preferably to that of n-heptane with a tendency of the NO oxidation to decrease with increasing feed gas humidity. The reason is that the generation of O 3 decreases as the amount of water vapor in the feed gas increases. Compared to the catalyst alone, the two-stage plasma catalyst system increased NO x removal by 29% at a temperature of 200 °C and an energy density of 25 J/L.

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Section: Methodssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

“…SEM image of a channel cell (a, b) channel cross-section and (c, d) surface of the channel, respectively. The images shown in (a–c) are reprinted with permission from Elsevier …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

High-Throughput NO_x Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

Nguyen

Matyakubov

Saud

et al. 2021

Environ. Sci. Technol.

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Plasma catalytic technology for CH₄ and CO₂ conversion: A review highlighting fluidized‐bed plasma reactor

Chen

Kim

Nozaki

2023

Plasma Processes & Polymers

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The plasma catalytic valorization of gases, particularly CH4 and CO2, has gained increasing attention. Value‐added chemicals, such as syngas and ethene, can be formed under mild conditions when temperature‐decoupled plasma activation and multistep feasible catalytic conversion are combined. In this sense, efficient plasma–catalyst interaction is of key importance, for which, however, plasma catalysis, as an emerging technology, is still poorly studied, where new catalyst design and investigation took up the most effort. In this perspective work, the challenging but equally important plasma–catalyst interaction is discussed, comparatively analyzing which type of plasma, catalyst bed, is the most promising. Representative plasma catalytic systems with their characteristic features are summarized, where the intrinsic capability of fluidized‐bed dielectric barrier discharge (FB‐DBD) reactor to maximize the plasma–catalyst interaction is highlighted. Furthermore, ongoing research on FB plasma catalysis is reviewed, based on which the superiority of FB‐DBD to other candidates, especially the most widely used packed‐bed DBD reactor, is critically evaluated. In addition, the perspectives of FB‐DBD, including challenges and development potential, are discussed.

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A comprehensive study on scaling up ethylene abatement via intermittent plasma-catalytic discharge process in a novel reactor configuration comprising multiple honeycomb monoliths

Saud¹,

Bhattarai²,

Nguyen³

et al. 2023

Chemical Engineering Journal

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Dependence of humidified air plasma discharge performance in commercial honeycomb monoliths on the configuration and key parameters of the reactor

Cited by 11 publications

References 37 publications

High-Throughput NO_x Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

High-Throughput NO_x Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

Plasma catalytic technology for CH₄ and CO₂ conversion: A review highlighting fluidized‐bed plasma reactor

A comprehensive study on scaling up ethylene abatement via intermittent plasma-catalytic discharge process in a novel reactor configuration comprising multiple honeycomb monoliths

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Dependence of humidified air plasma discharge performance in commercial honeycomb monoliths on the configuration and key parameters of the reactor

Cited by 11 publications

References 37 publications

High-Throughput NOx Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

High-Throughput NOx Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

Plasma catalytic technology for CH4 and CO2 conversion: A review highlighting fluidized‐bed plasma reactor

A comprehensive study on scaling up ethylene abatement via intermittent plasma-catalytic discharge process in a novel reactor configuration comprising multiple honeycomb monoliths

Contact Info

Product

Resources

About

High-Throughput NO_x Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

High-Throughput NO_x Removal by Two-Stage Plasma Honeycomb Monolith Catalyst

Plasma catalytic technology for CH₄ and CO₂ conversion: A review highlighting fluidized‐bed plasma reactor