Methane conversion with carbon dioxide in plasma-catalytic system

Krawczyk, Krzysztof; Młotek, Michał; Ulejczyk, Bogdan; Schmidt‐Szałowski, K.

doi:10.1016/j.fuel.2013.08.068

Cited by 69 publications

(40 citation statements)

References 38 publications

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“…Similar discrepancies have been observed for DRM in packed bed DBD plasma reactors. For instance, adding a packing has been reported to increase the conversion [17][18][19][20][21][22][23][24], while several other report a decrease in conversion of both CO 2 and CH 4 [24][25][26] and still other papers show only an effect on one of the two reacting gasses [12,23,27,28] (see Table 2). Moreover, also vast differences in selectivity are being described, even for similar packing materials, as detailed in Table 2.…”

Section: Of 32mentioning

confidence: 99%

“…Furthermore, very often catalytically activated packing materials are being introduced and discussed, without evaluating the impact of the non-activated packing on the DRM process [17][18][19][20][23][24][25]30,31], even though the latter can be expected to have an influence on the conversion and selectivity as well [12,13,32]. Indeed, in those papers where the packing materials are being studied with and without catalytic activation, an influence of the packing material itself can be observed [21,26,27,29,32]. For instance, Wang et al reported the formation of liquid products and a significant influence on the selectivity, when comparing different catalytic activations with non-activated packing.…”

Section: Of 32mentioning

confidence: 99%

“…Unfortunately, they only compared to one type of packing material [12]. Krawczyk et al [21] and Sentek et al [26] indicated only minor alterations in selectivity and conversion when adding a catalytic element on a certain packing, whereas different packing materials with the same active elements yielded major changes, suggesting that the packing itself could be responsible for the selectivity and conversion and not the catalytic element. Other research [23,29] shows a larger influence of the catalytic element on the conversion and selectivity.…”

Section: Of 32mentioning

confidence: 99%

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Altering Conversion and Product Selectivity of Dry Reforming of Methane in a Dielectric Barrier Discharge by Changing the Dielectric Packing Material

et al. 2019

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We studied the influence of dense, spherical packing materials, with different chemical compositions, on the dry reforming of methane (DRM) in a dielectric barrier discharge (DBD) reactor. Although not catalytically activated, a vast effect on the conversion and product selectivity could already be observed, an influence which is often neglected when catalytically activated plasma packing materials are being studied. The α-Al2O3 packing material of 2.0–2.24 mm size yields the highest total conversion (28%), as well as CO2 (23%) and CH4 (33%) conversion and a high product fraction towards CO (~70%) and ethane (~14%), together with an enhanced CO/H2 ratio of 9 in a 4.5 mm gap DBD at 60 W and 23 kHz. γ-Al2O3 is only slightly less active in total conversion (22%) but is even more selective in products formed than α-Al2O3. BaTiO3 produces substantially more oxygenated products than the other packing materials but is the least selective in product fractions and has a clear negative impact on CO2 conversion upon addition of CH4. Interestingly, when comparing to pure CO2 splitting and when evaluating differences in products formed, significantly different trends are obtained for the packing materials, indicating a complex impact of the presence of CH4 and the specific nature of the packing materials on the DRM process.

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Section: Of 32mentioning

confidence: 99%

Section: Of 32mentioning

confidence: 99%

Section: Of 32mentioning

confidence: 99%

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Altering Conversion and Product Selectivity of Dry Reforming of Methane in a Dielectric Barrier Discharge by Changing the Dielectric Packing Material

et al. 2019

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“…Previous studies, however, have identified the main condensables as water or different types of oxygenate containing one oxygen atom in their structure (e.g. alcohols) [29,30].…”

Section: Ch 4 /Co 2 Mixturementioning

confidence: 99%

Influence of gas expansion on process parameters in non-thermal plasma plug-flow reactors: A study applied to dry reforming of methane

Pinhão

Moura

Branco

et al. 2016

International Journal of Hydrogen Energy

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“…Zeolites and metal catalysts have been used before in plasma‐catalytic dry reforming of CH 4 , such as Zeolite 3A, NaX and NaY, Ni/γ‐Al 2 O 3 , Ag/Al 2 O 3 , Pd/Al 2 O 3 , Cu‐Ni/Al 2 O 3 , Cu/Al 2 O 3 , Co/γ‐Al 2 O 3 , Mn/γ‐Al 2 O 3 , Fe/Al 2 O 3 , La 2 O 3 /γ‐Al 2 O 3 , LaNiO 3 , and LaNiO 3 @SiO 2 . Ni/γ‐Al 2 O 3 has been the most commonly used catalyst in the plasma‐catalytic reforming process, while γ‐Al 2 O 3 has been the most frequently used support for the preparation of these metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

Plasma‐catalytic reforming of biogas over supported Ni catalysts in a dielectric barrier discharge reactor: Effect of catalyst supports

Mei

Ashford

et al. 2016

Plasma Processes & Polymers

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In this study, plasma-catalytic reforming of simulated biogas for the production of value-added fuels and chemicals (e.g., H 2 ) has been carried out in a coaxial dielectric barrier discharge (DBD) plasma reactor. The influence of four Ni catalysts (Ni/γ-Al 2 O 3 , Ni/MgO, Ni/SiO 2 , and Ni/TiO 2 ) on the plasma-catalytic biogas reforming has been investigated in terms of the conversion of reactants, the yield and selectivity of target products, the carbon deposition on the catalysts, and the energy efficiency of the plasma-catalytic process. The use of plasma combined with these Ni catalysts enhanced the performance of the biogas reforming. A maximum CO 2 conversion of 26.2% and CH 4 conversion of 44.1% were achieved when using the Ni/γ-Al 2 O 3 catalyst at a specific energy density (SED) of 72 kJ l −1 . Compared to other Ni catalysts, placing the Ni/γ-Al 2 O 3 catalyst in the DBD produced more syngas and C 3 ─C 4 hydrocarbons, but less C 2 H 6 . The lowest energy cost (EC) for biogas conversion and syngas production, as well as the highest energy efficiency and fuel production efficiency (FPE), were achieved when using the Ni/γ-Al 2 O 3 catalyst in the plasma process. The Ni/γ-Al 2 O 3 catalyst also showed the lowest surface carbon deposition of 3.8%, after catalysing the plasma biogas reforming process for 150 min at a SED of 60 kJ l −1 . Compared to other Ni catalysts, the enhanced performance of the Ni/γ-Al 2 O 3 catalyst can be attributed to its higher specific surface area, higher reducibility and more, stronger basic sites on the catalyst surface. K E Y W O R D Sbiogas reforming, dielectric barrier discharge, Ni catalysts, plasma-catalysis

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Methane conversion with carbon dioxide in plasma-catalytic system

Cited by 69 publications

References 38 publications

Altering Conversion and Product Selectivity of Dry Reforming of Methane in a Dielectric Barrier Discharge by Changing the Dielectric Packing Material

Altering Conversion and Product Selectivity of Dry Reforming of Methane in a Dielectric Barrier Discharge by Changing the Dielectric Packing Material

Influence of gas expansion on process parameters in non-thermal plasma plug-flow reactors: A study applied to dry reforming of methane

Plasma‐catalytic reforming of biogas over supported Ni catalysts in a dielectric barrier discharge reactor: Effect of catalyst supports

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