Use of a non-thermal plasma for the production of synthesis gas from biogas

Goujard, Valentin; Tatibouët, Jean‐Michel; Batiot‐Dupeyrat, Catherine

doi:10.1016/j.apcata.2008.10.050

Cited by 132 publications

(77 citation statements)

References 34 publications

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“…The carbon balance is particularly bad when methane and carbon dioxide are used without diluent. The same results were obtained and comment previously [19] we showed that an increase of the residence time leads to decrease the carbon balance. With the experimental conditions used here, the residence time is high: 11.2 s, consequently not only heavy molecules are formed but also the methane cracking to hydrogen and solid carbon is favored.…”

Section: Selectivity To Productssupporting

confidence: 92%

“…The carbon balance which is far from 100% can be mainly attributed to a carbon deposit experimentally observed on the electrodes during the reaction. However, the presence of other compounds such as: 2-methyl-2-hexanol, 3-methyl-2-heptanone (detected as traces amount)… cannot be excluded since the formation of such heavy molecules was observed in a previous study [19]. The carbon balance is particularly bad when methane and carbon dioxide are used without diluent.…”

Section: Selectivity To Productsmentioning

confidence: 93%

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Carbon Dioxide Reforming of Methane Using a Dielectric Barrier Discharge Reactor: Effect of Helium Dilution and Kinetic Model

Goujard

Tatibouët

Batiot‐Dupeyrat

2011

Plasma Chem Plasma Process

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The carbon dioxide reforming of methane to synthesis gas was investigated in a dielectric barrier discharge reactor at room temperature. The influence of dilution of reactants by helium was studied. We showed that, at a fixed contact time, the conversions of CH 4 and CO 2 increase when the amount of helium in the gas mixture increases. This result is attributed to the ''penning ionization'' phenomenon, which corresponds to an energy transfer from excited He to molecules in ground state (CH 4 , CO 2 ). The selectivity to products is affected by the dilution factor. As soon as helium is present in a large amount the formation of products resulting from recombination of methyl radicals (such as C 2 , C 3 and C 4 ) is less favourable due to the lowest probability of collisions to proceed. A kinetic model is proposed based on the assumption that the reactant molecules CH 4 or CO 2 are attacked by active species produced by the plasma discharges, and the production of this active species are function of the plasma power. This model which takes into account the dilution by helium fits particularly well the experimental data we obtained.

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Section: Selectivity To Productssupporting

confidence: 92%

Section: Selectivity To Productsmentioning

confidence: 93%

Carbon Dioxide Reforming of Methane Using a Dielectric Barrier Discharge Reactor: Effect of Helium Dilution and Kinetic Model

Goujard

Tatibouët

Batiot‐Dupeyrat

2011

Plasma Chem Plasma Process

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“…Substituting [O 2 ] with 1/2[CO], (14) can be written as: [CO] 0 with SIE are 0.969, 0.994, and 0.972 for non-packed reactor, and quartz and CaTiO 3 packed reactors, respectively, suggesting that the correlation can be described as ½CO ¼ ½CO 0 exp½Àk 00 SIE Â SIE. Thus, the oxidation of CO in the plasma is of first order.…”

Section: Kinetics Of the Reactionsmentioning

confidence: 99%

“…Non-thermal plasma (NTP) can in principle help to overcome the problem by facilitating reactions at low temperatures as it can energize stable Q. Yu (&) Á M. Kong Á T. Liu Á J. Fei Á X. Zheng Department of Chemistry, Institute of Catalysis, Zhejiang University, Hangzhou, China e-mail: ruby80@zju.edu.cn molecules without external heating [6][7][8]. There have been many investigations on the NTP-assisted reforming of CO 2 and hydrocarbons [9][10][11][12][13][14]. Besides the facilitation of reactions at lower reaction temperatures, dry reforming of hydrocarbons in NTP also has characteristics such as fast ignition of the reaction, the compatibility for a broad range of hydrocarbons, the insensitivity to impurities in the gas stream compared with thermal catalytic processes [15].…”

Section: Introductionmentioning

confidence: 98%

Characteristics of the Decomposition of CO2 in a Dielectric Packed-Bed Plasma Reactor

Kong

Liu

et al. 2011

Plasma Chem Plasma Process

147

148

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The decomposition of CO 2 in a dielectric packed-bed plasma reactor has been studied. It was found that the dielectric properties and morphology of packing dielectric pellets play important roles in the reaction due to their influence on the electron energy distribution in the plasma. The acid-base properties of the packing materials also affect the reaction through the chemisorption of CO 2 on basic sites of the materials. Heterogeneous reactions on the solid surfaces of the dielectric materials also play a role in the reaction, which was also confirmed through the investigation of the influence of the discharge length on the reaction. The reverse reaction of CO 2 decomposition, the oxidation of CO, was also investigated to further understand the role of dielectric materials in the plasma and their effect on plasma reactions. Both the decomposition of CO 2 and the oxidation of CO in nonpacked or dielectric packed reactors are first-ordered.

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“…The values shown in parentheses in Table 1 represent the hydrogen conversion rate calculated without taking into account the hydrogen atoms present in H 2 S, and they are virtually identical except when the partial pressure of H 2 S is 26.6 Pa. When the initial partial pressure of H 2 S is 26.6 Pa, the amount of H 2 produced rises, so that when it is similar to the partial pressures of CH 4 and CO 2 , H 2 appears to be produced from hydrogen atoms in H 2 S.…”

Section: Hydrogen Conversion Ratementioning

confidence: 95%

Decomposition Characteristics of an Artificial Biogas in a Low‐Pressure DC Glow Discharge

Itoh

Oshita

Satoh

2013

Electrical Engineering Japan

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SUMMARYThe decomposition characteristics of an artificial biogas, which is a mixture of CH 4 , CO 2 , and H 2 S, using a low-pressure DC glow discharge have been investigated. It is found that H 2 , CO, C 2 H 2 , H 2 O, CS 2 , and COS are produced from the artificial biogas in the glow discharge. About 65% of the hydrogen atoms in CH 4 are converted into H 2 at an input energy of 800 J, at which CH 4 is completely decomposed, and the decomposition characteristics of the artificial biogas are minimally dependent on the H 2 S additive. Further, H 2 S has a tendency to be decomposed earlier than the other components of the artificial biogas. When the glow discharge is generated in the artificial biogas with H 2 S, some of the carbon atoms are found to deposit on the electrodes and the wall of the discharge chamber.

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Use of a non-thermal plasma for the production of synthesis gas from biogas

Cited by 132 publications

References 34 publications

Carbon Dioxide Reforming of Methane Using a Dielectric Barrier Discharge Reactor: Effect of Helium Dilution and Kinetic Model

Carbon Dioxide Reforming of Methane Using a Dielectric Barrier Discharge Reactor: Effect of Helium Dilution and Kinetic Model

Characteristics of the Decomposition of CO2 in a Dielectric Packed-Bed Plasma Reactor

Decomposition Characteristics of an Artificial Biogas in a Low‐Pressure DC Glow Discharge

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