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Zhou, Liming; Xue, Bin; Kogelschatz, U.; Eliasson, Baldur

doi:10.1023/a:1021849503110

Cited by 115 publications

(65 citation statements)

References 13 publications

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“…Because of various applied conditions in DBD reactor to methane conversion including feed compositions, AC frequency, using catalyst, catalyst type, reactor geometry, different specifications of input voltage and input power the results are different and difficult to compare in the course of temperature effects solely. In some cases methane conversion has increasing trend with temperature rising [11]. On the other hand reduction of methane conversion with temperature increasing can be seen in literature [8].…”

Section: Resultsmentioning

confidence: 90%

“…The different groups have studied the effect of temperature in DBD reactor [8,11,15,22,23]. Because of various applied conditions in DBD reactor to methane conversion including feed compositions, AC frequency, using catalyst, catalyst type, reactor geometry, different specifications of input voltage and input power the results are different and difficult to compare in the course of temperature effects solely.…”

Section: Resultsmentioning

confidence: 99%

“…They studied the effect of CO 2 :CH 4 ratio in C 2 H 6 and H 2 selectivity. The partial oxidation of methane to methanol with oxygen or air in a DBD plasma was studied by Zhou et al [11]. They found the highest methanol yield of 3% and the highest methanol selectivity of 30%.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Methane Conversion to C2 Hydrocarbons Using Dielectric-barrier Discharge Reactor: Effects of System Variables

Matin

Savadkoohi

Feizabadi

2008

Plasma Chem Plasma Process

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The partial oxidation of methane to C 2 hydrocarbons was investigated experimentally in a dielectric-barrier discharge (DBD) reactor. The effects of reactor wall temperature, input gas flow rate and volumetric ratio of methane to oxygen over methane conversion and C 2 production were investigated. The highest C 2 selectivity of about 50% was achieved at 1.8% methane conversion. Finally the model equations were used to correlate methane conversion and ethylene selectivity with the system variable within the studied range of them. The correlation equation shows the sole effects and interaction effects of system variables on methane conversion and ethylene selectivity.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Methane Conversion to C2 Hydrocarbons Using Dielectric-barrier Discharge Reactor: Effects of System Variables

Matin

Savadkoohi

Feizabadi

2008

Plasma Chem Plasma Process

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“…On the other hand, NTPs have also been successfully applied for the production of chemicals (e.g. methanol from methane (13,14) and other selective-oxidation reactions), (15) reforming (7,16) and reduction of supported metal catalysts. (17) Unfortunately, on the basis of a large number of experimental results it has to be recognised that a non-thermal gas-phase plasma does not usually allow achieving both high conversion and satisfactory selectivity, which hitherto prevented a broader application of this technology.…”

Section: Introductionmentioning

confidence: 99%

Influence of Ferroelectric Materials and Catalysts on the Performance of Non-Thermal Plasma (NTP) for the Removal of Air Pollutants

Holzer

Kopinke

Roland

2005

Plasma Chem Plasma Process

137

123

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The introduction of ferroelectric and catalytically active materials into the discharge zone of NTP reactors is a promising way to improve their performance for the removal of hazardous substances, especially those appearing in low concentrations. In this study, several coaxial barrier-discharge plasma reactors varying in size and barrier material (glass, Al 2 O 3 , and TiO 2 ) were used. The oxidation of methyl tert-butyl ether (MTBE), toluene and acetone was studied in a gas-phase plasma and in various packed-bed reactors (filled with ferroelectric and catalytically active materials). In the ferroelectric packed-bed reactors, better energy efficiency and CO 2 selectivity were found for the oxidation of the model substances. Studies on the oxidation of a toluene/acetone mixture in air showed an enhanced oxidation of the less reactive acetone related to toluene in the ferroelectric packed-bed reactors. It can be concluded that the change of the electrical discharge behaviour was caused by a larger number of non-selective and highly reactive plasma species formed within the ferroelectric bed. When combining ferroelectric (BaTiO 3 ) and catalytically active materials (LaCoO 3 ), only a layered implementation led to synergistic effects utilising both highly energetic species formed in the ferroelectric packed-bed and the potential for total oxidation provided by the catalytically active material in the second part of the packed bed.

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“…[5] The non-catalytic conversion of CH 4 or CH 4 ÀO 2 has been carried out by discharge approaches such as high pulse frequency, [6] corona, [7] radiofrequency (RF), [8] MW, [9] and dielectric barrier discharges (DBDs). [10] These plasmas primarily yielded C 2 hydrocarbons, methanol, or diamond-like carbon film and not extensively syngas. [6][7][8][9][10] However, low pressure RF plasma which is usually used in industry for semiconductor manufacture and surface modification has been demonstrated for converting CH 4 ÀO 2 into syngas in preliminary studies.…”

mentioning

confidence: 99%

Investigation of Synthesis‐Gas Production via CH₄O₂Ar Gas Mixture Using Microwave Plasma Torch

Yaghmaee

Shokri

Khiabani

et al. 2009

Plasma Processes & Polymers

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In this study, a non‐thermal plasma reactor under atmospheric pressure instead of the usual catalytic processes was developed to produce synthesis‐gas (CO, H2) “syngas” from the CH4O2Ar system. Moreover, using the Gibbs free energy minimization method, the gas phase composition of plasma species was calculated as quantitative pre‐estimate for our analytical observations. In our experimental investigation, a plasma reactor consisting of a microwave plasma torch, gas tube, cooling section, and sampling part was used. The experiments have been carried out under atmospheric pressure with maximum 300 W microwave power. To analyze the produced gas, the gas chromatography (GC) and the Fourier transform infrared (FTIR) spectroscopy have been used. In order to optimize the production conditions, the effect of O2/CH4 gas flow rate and plasma power in the plasma chemistry phenomenon, CH4 conversion and CO selectivity have been investigated. Our experimental results confirm our simulations and they are in good agreement with existing literature data so far.

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Cited by 115 publications

References 13 publications

Methane Conversion to C2 Hydrocarbons Using Dielectric-barrier Discharge Reactor: Effects of System Variables

Methane Conversion to C2 Hydrocarbons Using Dielectric-barrier Discharge Reactor: Effects of System Variables

Influence of Ferroelectric Materials and Catalysts on the Performance of Non-Thermal Plasma (NTP) for the Removal of Air Pollutants

Investigation of Synthesis‐Gas Production via CH₄O₂Ar Gas Mixture Using Microwave Plasma Torch

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Untitled

Cited by 115 publications

References 13 publications

Methane Conversion to C2 Hydrocarbons Using Dielectric-barrier Discharge Reactor: Effects of System Variables

Methane Conversion to C2 Hydrocarbons Using Dielectric-barrier Discharge Reactor: Effects of System Variables

Influence of Ferroelectric Materials and Catalysts on the Performance of Non-Thermal Plasma (NTP) for the Removal of Air Pollutants

Investigation of Synthesis‐Gas Production via CH4O2Ar Gas Mixture Using Microwave Plasma Torch

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Investigation of Synthesis‐Gas Production via CH₄O₂Ar Gas Mixture Using Microwave Plasma Torch