Plasma Processing of Propane at Hyper‐Atmospheric Pressure: Experiment and Modelling

Hill, Sarah L.; Whitehead, J. Christopher; Zhang, Kui

doi:10.1002/ppap.200700032

Cited by 12 publications

(13 citation statements)

References 15 publications

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“…The only way to describe these results is to consider reactions (3) and (4) as purely dissociative processes, i.e. followed by (5). This approach is also consistent with results obtained about by-products, discussed in the following section.…”

Section: Role Of Metastable States Of Nitrogen In the Removal Of Propanesupporting

confidence: 73%

“…The kinetic of propane in non-thermal plasmas of atmospheric gases (N 2 /O 2 /H 2 O mixtures) is currently under study owing to various applications such as cleaning of polluted air streams [1][2][3][4][5][6], or more recently plasma assisted ignition and combustion [7][8][9][10][11][12][13]. Owing to other types of previously developed applications of low pressure plasmas, for example carbon compounds thin films production [14], numerous works have been performed in the past about electron collisions on this hydrocarbon molecule [15][16][17][18], especially on ionisation processes.…”

Section: Introductionmentioning

confidence: 99%

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Propane dissociation in a non-thermal high-pressure nitrogen plasma

Moreau¹,

Pasquiers²,

Blin-Simiand³

et al. 2010

J. Phys. D: Appl. Phys.

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Abstract. The removal and the conversion processes of propane in N 2 /C 3 H 8 mixtures (concentration of hydrocarbon molecules up to 5500 ppm) energised by a photo-triggered discharge (homogeneous plasma) are studied at 460 mbar total pressure, both experimentally and theoretically. A self-consistent 0D discharge and kinetic model is used to interpret chromatographic measurements of propane and some by-products concentrations (hydrogen and hydrocarbons with 2 or 3 carbon atoms). It is suggested, from the comparison between measurements and model predictions, that quenching processes of nitrogen metastable states by C 3 H 8 lead to the dissociation of the hydrocarbon molecule, and are the most important processes for the removal of propane. Such a result is obtained using the quenching coefficient value previously determined by Callear and Wood for the A 3 Σ + u state [19], whereas the coefficient for collisions of the singlet states with C 3 H 8 is estimated to be 3.0x10 -10 cm 3 s -1 in order to explain the measured propane disappearance in the N 2 / C 3 H 8 mixture excited by the photo-triggered discharge. The hydrogen molecule is the measured most populated by-product and, also from the comparison between experimental results and model predictions, the most probable dissociation products of propane appear to be H 2 and C 3 H 6 . The propene molecule is also efficiently dissociated by quenching processes of N 2 states, and probably leads to the production of hydrogen atoms and methyl radicals with equivalent probabilities. The kinetic model predicts that the carbon atom is distributed amongst numerous molecules, including HCN, CH 4 , C 2 H 2 , C 2 H 4 , C 2 H 6 , C 3 H 6 .

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Section: Role Of Metastable States Of Nitrogen In the Removal Of Propanesupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Propane dissociation in a non-thermal high-pressure nitrogen plasma

Moreau¹,

Pasquiers²,

Blin-Simiand³

et al. 2010

J. Phys. D: Appl. Phys.

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“…Conversely, Martin et al were able to process propene in dry air with an initial NO concentration of 500 ppm without the formation of methyl nitrate. We have previously reported that during DBD processing of propane in air, nitrate and nitrite production is unimportant. This may be due to the difference in available NO and NO 2 ; Dorai and Kushner 10 use an initial NO concentration of 260 ppm, while our previous work 17 and the current work do not add NO to the gas stream, and thus the NO x available for reaction is only what is created in the air plasma discharge.…”

Section: Resultsmentioning

confidence: 99%

The Destruction of Atmospheric Pressure Propane and Propene Using a Surface Discharge Plasma Reactor

et al. 2008

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Surface discharge plasma reactors (SDRs) have been shown to be effective in removing a wide range of pollutants. In this study, the effectiveness of a SDR for the removal of propane and propene from an atmospheric pressure air stream was investigated. For an input energy of 100 J L-1, the conversions were found to be 16% and 68% for propane and propene, respectively. The total carbon recovery was found to increase with increasing specific input energy (SIE) for both hydrocarbons. FTIR analysis showed that CO and CO2 are the major end-products, and GC-MS identified formic acid as a significant byproduct. The effect of initial propane concentration was also investigated. The reaction chemistry involved in the oxidative plasma conversion of propane and propene is discussed.

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“…The mechanisms for oxidative plasma decomposition of propane and propene are well established. 10,11,13 The reaction of atomic oxygen proceeds via hydrogen atom abstraction…”

Section: Discussionmentioning

confidence: 99%

“…This value was then used in all of the simulations. The reaction mechanism was adapted from that used in Hill et al; 11 the majority of the breakdown routes for propane and propene follow the same pathways. However, additional reactions were needed to describe the initial breakdown of propene by the primary and secondary active species formed in the plasma.…”

Section: Modelingmentioning

confidence: 99%

Enhancement of the Destruction of Propane in a Low-Temperature Plasma by the Addition of Unsaturated Hydrocarbons: Experiment and Modeling

Demidyuk

Hill

Whitehead³

2008

J. Phys. Chem. A

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The oxidative destruction of propane at low temperature ( approximately 150 degrees C) in a nonthermal, atmospheric pressure plasma can be significantly enhanced without the use of a catalyst by the simple addition of an unsaturated alkene. An enhancement in the destruction of propane of up to 45% can be achieved by the addition of propene. Propene acts as a supply of OH radicals, which accelerate the breakdown of the propane. Ethene also enhances the destruction of propane but to a more limited extent. The experimental results are interpreted by chemical modeling, which is used to elucidate the reaction mechanisms.

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Plasma Processing of Propane at Hyper‐Atmospheric Pressure: Experiment and Modelling

Cited by 12 publications

References 15 publications

Propane dissociation in a non-thermal high-pressure nitrogen plasma

Propane dissociation in a non-thermal high-pressure nitrogen plasma

The Destruction of Atmospheric Pressure Propane and Propene Using a Surface Discharge Plasma Reactor

Enhancement of the Destruction of Propane in a Low-Temperature Plasma by the Addition of Unsaturated Hydrocarbons: Experiment and Modeling

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