Plasma Reactivity and Plasma-Surface Interactions During Treatment of Toluene by a Dielectric Barrier Discharge

Blin-Simiand, N.; Jorand, F.; Magne, L.; Pasquiers, S.; Postel, C.; Vacher, J.R.

doi:10.1007/s11090-008-9135-1

Cited by 79 publications

(112 citation statements)

References 48 publications

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“…Further, most of the studies published on the subject were devoted to those ANTP's generated with a dielectric barrier discharges (DBD) [6][7][8][9]. The interest in DBD's is probably due to the ability of these systems to avoid sparking when working in the high power density regime that is required for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of Acetylene in Atmospheric Pressure Pulsed Corona Discharge Cell Working in the Nanosecond Regime

Rédolfi

Aggadi

Duten

et al. 2009

Plasma Chem Plasma Process

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Combined experimental and modeling studies of acetylene oxidation in pulsed corona discharges working in the nanosecond regime are presented. The corona cell was characterized in term of power deposition to provide input data for the model. The concentrations of ozone, CO, CO 2 and residual acetylene were systematically measured for model validation purposes. The model used allows describing the detailed chemistry in the discharge and the mass transfer between the microdischarges and the discharge free regions in the corona cell. Results showed that the model allows a satisfactory prediction of the acetylene residual fraction, CO and CO 2 yields and O 3 concentration for a wide range of conditions. They enabled a precise identification of the product distribution and confirmed the central role of O-atom in the oxidation process. They also revealed that ketene, H 2 CCO, plays an important role in the oxidation mechanism and allowed drawing some conclusions on the optimization of the oxidation process.

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Section: Introductionmentioning

confidence: 99%

Oxidation of Acetylene in Atmospheric Pressure Pulsed Corona Discharge Cell Working in the Nanosecond Regime

Rédolfi

Aggadi

Duten

et al. 2009

Plasma Chem Plasma Process

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“…A small peak at 28 amu, likely C 2 H 4 initially, has been augmented by what is probably CO. A very negligible peak at 30 amu, possibly C 2 H 6 originally, has become significant, probably due to CH 2 O. Once again, some correlations can be made with the plasma studies on toluene of Blin-Simiand et al [4]. They discussed some possibly significant reactions associated with O( 3 P).…”

Section: Effects Of O 2 Addition In Suppressing Formation Of High Masmentioning

confidence: 83%

“…The mass peak at 91 amu may at least partially represent a steady state population consisting mainly of this species. Another possible species at this mass is a methylphenyl radical [4]. Blin-Simiand et al [4] used FTIR and other analysis methods to identify final stable products following discharges on toluene in N 2 and N 2 /O 2 mixtures.…”

Section: Resultsmentioning

confidence: 99%

“…Another possible species at this mass is a methylphenyl radical [4]. Blin-Simiand et al [4] used FTIR and other analysis methods to identify final stable products following discharges on toluene in N 2 and N 2 /O 2 mixtures. They then used these product identifications to help to infer processes that took place as a result of the discharge.…”

Section: Resultsmentioning

confidence: 99%

“…NTP remediation developments for alkylbenzenes, the focus VOCs in our studies, have been described [4]. While efforts have been under way since at least the early 1990s to improve practical applications via a better fundamental understanding of NTP phenomena [1,[5][6][7], direct study of post discharge chemistry has been limited.…”

Section: Introductionmentioning

confidence: 99%

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Post Discharge Chemistry of Aromatic Molecules in Rare Gas

Sulkes

2011

Plasma Chem Plasma Process

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We have employed 800 nm 150 fs laser pulses to carry out photoionization (PI) time-of-flight mass spectrometric detection of intermediates following corona discharges on aromatic molecules (alkylbenzenes and pyridine) in He, stabilized by subsequent supersonic gas expansions. Observed product peaks appear to be at least roughly in proportion to actual number densities; PI induced fragmentation of parent ions appears not to be excessive. Consequently, 800 nm fs PI should be useful for general product analysis applications in plasma chemistry. For most alkylbenzenes subjected to corona discharges in rare gas, the overall trends in product chemistry are similar in many respects to observed flame and pyrolysis chemistry in rare gases for the same species. Following discharge, as in those other cases, H deficient carbon radical fragments initially produced react in turn to form larger aromatic species. However, compared with flame/pyrolysis, discharge produced a larger number of fragment species, which can lead to a wider and somewhat different range of higher mass aromatic products. Co-addition of even a small component of O 2 to the discharge mixes has a potent effect in inhibiting formation of higher mass aromatic products in alkylbenzenes.

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