The Chemistry of Gaseous Dodecane Degradation in a BaTiO3 Packed-Bed Plasma Reactor

Prantsidou, Maria; Whitehead, J. Christopher

doi:10.1007/s11090-014-9597-2

Cited by 14 publications

(5 citation statements)

References 40 publications

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“…It is clear that α increases with increasing the applied discharge power, as is expected from the equation (11), because α increases as E increases and figure 9 shows that E increases with increasing discharge power. According to equation (11), α for pure Ar is higher than that for pure CO 2 at the same electric field and pressure, due to the fact that the B value of Ar is much smaller than that of CO 2 and α exhibits a strong negative correlation with the B value. Thus, this enhancement effect for α upon Ar dilution offsets the reduced effect of decreasing the electric field by Ar dilution (as is seen in figure 9), to give an increase in Townsend ionisation coefficient.…”

Section: Electric Field Propertiessupporting

confidence: 64%

“…The parameters A and B are characteristic and constant for each gas A (12 and 20 cm −1 Torr −1 for Ar and CO 2 , respectively) and B (180 and 466 V cm −1 Torr −1 for Ar and CO 2 , respectively) for E/p=30-500 V cm −1 Torr −1 [35]. It is clear that α increases with increasing the applied discharge power, as is expected from the equation (11), because α increases as E increases and figure 9 shows that E increases with increasing discharge power. According to equation (11), α for pure Ar is higher than that for pure CO 2 at the same electric field and pressure, due to the fact that the B value of Ar is much smaller than that of CO 2 and α exhibits a strong negative correlation with the B value.…”

Section: Electric Field Propertiessupporting

confidence: 53%

“…Different NTP processes have been used to investigate the CO 2 conversion, energy efficiency and total economic cost [3][4][5][6][7][8]. Amongst them, packed-bed reactors filled with various dielectric materials have been widely studied, not only for CO 2 conversion, but also for other environmental applications, such as the abatement of volatile organic carbons [9], halomethanes [10] and hydrocarbons [11]. Recently, Gómez-Ramírez et al [12] reported that compared to normal dielectric materials used in a packed dielectric barrier discharge (DBD) reactor, the use of a high dielectric, ferroelectric material, e.g.…”

Section: Introductionmentioning

confidence: 99%

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CO₂ dissociation in a packed-bed plasma reactor: effects of operating conditions

Khalaf

Martin

et al. 2018

Plasma Sources Sci. Technol.

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An extensive study of CO 2 conversion in a non-thermal, barium titanate packed-bed plasma reactor was conducted to investigate the influence of discharge power, gas flow rate and Ar dilution on the CO 2 conversion, energy efficiency, identity of products and electrical characteristics of the discharge. The maximum energy efficiency in this study (0.29 mmol kJ −1 , i.e. 8.3%) was achieved for a pure CO 2 plasma, whereas the maximum CO 2 conversion (46%) was obtained in a 20/80 CO 2 /Ar plasma. The results also showed that the energy efficiency was approximately constant at a given gas composition regardless of the gas flow rates. In addition, ozone (up to 100 ppm) was detected and its formation was affected by the gas flow rate. The electrical characteristics of the plasma in the packed-bed reactor were deduced using a simplified DBD equivalent model. The electrical characterisation showed that dilution with argon decreased the discharge breakdown voltage resulting in a higher mean electron energy and increased electron density enhancing conversion. The results also indicated that using a lower flow rate can increase the charge transferred per half-cycle of the applied voltage to facilitate the electron-induced CO 2 dissociation, and this effect is more pronounced upon adding Ar.

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Section: Electric Field Propertiessupporting

confidence: 64%

Section: Electric Field Propertiessupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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CO₂ dissociation in a packed-bed plasma reactor: effects of operating conditions

Khalaf

Martin

et al. 2018

Plasma Sources Sci. Technol.

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“…Packed-bed reactor. Packed-bed reactors are much used in environmental applications of non-thermal plasmas, as coupling non-thermal plasma and heterogeneous catalysis may increase the performance of several processes [29,[47][48][49]. According to Villermaux [38], packed-bed reactors behave as PFRs if L/d p >50 and L/d t >0.5, where d p is the diameter of the packing particles.…”

Section: Some Reactor Configurations Used In Environmental Applicatio...mentioning

confidence: 99%

Applying chemical engineering concepts to non-thermal plasma reactors

Nobrega

Gaunand

Rohani

et al. 2018

Plasma Sci. Technol.

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Process scale-up remains a considerable challenge for environmental applications of non-thermal plasmas. Undersanding the impact of reactor hydrodynamics in the performance of the process is a key step to overcome this challenge. In this work, we apply chemical engineering concepts to analyse the impact that different non-thermal plasma reactor configurations and regimes, such as laminar or plug flow, may have on the reactor performance. We do this in the particular context of the removal of pollutants by non-thermal plasmas, for which a simplified model is available. We generalise this model to different reactor configurations and, under certain hypotheses, we show that a reactor in the laminar regime may have a behaviour significantly different from one in the plug flow regime, often assumed in the non-thermal plasma literature. On the other hand, we show that a packed-bed reactor behaves very similarly to one in the plug flow regime. Beyond those results, the reader will find in this work a quick introduction to chemical reaction engineering concepts.

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“…N -dodecane is a long-chain paraffin that is generally used as an organic solvent in power plants. , Additionally, dodecane was also reported as a jet fuel that could also be converted to other valuable chemicals such hydrogen and light hydrocarbon . The conversion of long-chain hydrocarbons to lower chains typically used zeolite as a catalyst.…”

Section: Introductionmentioning

confidence: 99%

Steam Catalytic Cracking of n-Dodecane to Light Olefins over Phosphorous- and Metal-Modified Nanozeolite Y

et al. 2022

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Nanozeolite Y was synthesized without a template and modified with phosphorous (P) and metals. P was introduced via impregnation with different weight loadings (0.5, 1, and 2 wt %), while ion exchange was developed to introduce zirconium (Zr) and cobalt (Co). The physicochemical properties of the catalysts were characterized with X-ray diffraction (XRD), N 2 adsorption–desorption, temperature-programmed desorption of ammonia (NH 3 -TPD), and 27 Al and 31 P solid-state nuclear magnetic resonance (NMR). The parent nanozeolite Y showed an identical XRD pattern to that of a previous study, and the modified nanozeolite Y showed a lower crystallinity. The introduction of P altered tetrahedral Al to an octahedral coordination, which affected the catalyst acidity. Then, the catalyst was evaluated to produce olefins from n -dodecane at 550, 575, and 600 °C. The conversion, gas yield, and olefin yield increased with increasing temperature. The maximum olefin yield (63%) was achieved with the introduction of 1 wt % P with the highest selectivity to ethylene. The Co-modified nanozeolite altered the zeolite structure and exhibited similar activity to the P-modified one. Meanwhile, Zr-modified nanozeolite Y caused excessive metal distribution, blocked the porous structure of the zeolite, and then reduced the catalytic activity.

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The Chemistry of Gaseous Dodecane Degradation in a BaTiO3 Packed-Bed Plasma Reactor

Cited by 14 publications

References 40 publications

CO₂ dissociation in a packed-bed plasma reactor: effects of operating conditions

CO₂ dissociation in a packed-bed plasma reactor: effects of operating conditions

Applying chemical engineering concepts to non-thermal plasma reactors

Steam Catalytic Cracking of n-Dodecane to Light Olefins over Phosphorous- and Metal-Modified Nanozeolite Y

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The Chemistry of Gaseous Dodecane Degradation in a BaTiO3 Packed-Bed Plasma Reactor

Cited by 14 publications

References 40 publications

CO2 dissociation in a packed-bed plasma reactor: effects of operating conditions

CO2 dissociation in a packed-bed plasma reactor: effects of operating conditions

Applying chemical engineering concepts to non-thermal plasma reactors

Steam Catalytic Cracking of n-Dodecane to Light Olefins over Phosphorous- and Metal-Modified Nanozeolite Y

Contact Info

Product

Resources

About

CO₂ dissociation in a packed-bed plasma reactor: effects of operating conditions

CO₂ dissociation in a packed-bed plasma reactor: effects of operating conditions