Plasma catalytic conversion of methane into syngas: the combined effect of discharge activation and catalysis

Heintze, M.; Pietruszka, Barbara

doi:10.1016/j.cattod.2003.11.006

Cited by 82 publications

(50 citation statements)

References 21 publications

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“…In plasma processing, carbon deposit on the walls of the reactor and on electrodes could be a serious problem with a consequence of decreasing the system efficiency (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21) . However, one can note that high hydrogen purity can be obtained through that reaction avoiding CO and CO 2 production.…”

Section: Resultsmentioning

confidence: 99%

Syngas Production from Propane Using Atmospheric Non-thermal Plasma

Ouni

Khacef

Cormier

2009

Plasma Chem Plasma Process

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Propane steam reforming using a sliding discharge reactor was investigated under atmospheric pressure and low temperature (420 K). Non-thermal plasma steam reforming proceeded efficiently and hydrogen was formed as a main product (H 2 concentration up to 50%). By-products (C 2 -hydrocarbons, methane, carbon dioxide) were measured with concentrations lower than 6%. The mean electrical power injected in the discharge is less than 2 kW. The process efficiency is described in terms of propane conversion rate, steam reforming and cracking selectivity, as well as by-products production. Chemical processes modelling based on classical thermodynamic equilibrium reactor is also proposed. Calculated data fit quiet well experimental results and indicate that the improvement of C 3 H 8 conversion and then H 2 production can be achieved by increasing the gas fraction through the discharge. By improving the reactor design, the non-thermal plasma has a potential for being an effective way for supplying hydrogen or synthesis gas

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Section: Resultsmentioning

confidence: 99%

Syngas Production from Propane Using Atmospheric Non-thermal Plasma

Ouni

Khacef

Cormier

2009

Plasma Chem Plasma Process

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“…The phenomenon probably triggers excitation of electrons pairs of reactants molecules from the ground state to the outer stationary states. This excitation will lower binding energy of the reactants so that termination of the bonding chain becomes easier [32][33][34][35]. In the hybrid catalytic-plasma process, active species (high energetic electrons, metastable compounds, free radicals) are not only formed around the plasma discharge zone, but also in pores of the catalyst due to direct contact between the plasma and the catalyst [36].…”

Section: Effect Of Plasma Treatment On Transesterification Reaction Pmentioning

confidence: 99%

Preliminary Testing of Hybrid Catalytic-Plasma Reactor for Biodiesel Production Using Modified-Carbon Catalyst

Buchori

Istadi

Purwanto

et al. 2016

Bull. Chem. React. Eng. Catal.

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Preliminary testing of hybrid catalytic-plasma reactor for biodiesel production through transesterification of soybean oil with methanol over modified-carbon catalyst was investigated. This research focused on synergetic roles of non-thermal plasma and catalysis in the transesterification process. The amount of modified-carbon catalyst with grain size of 1.75 mm was placed into fixed tubular reactor within discharge zone. The discharge zone of the hybrid catalytic-plasma reactor was defined in the volume area between high voltage and ground electrodes. Weight Hourly Space Velocity (WHSV) of 1.85 h -1 of reactant feed was studied at reaction temperature of 65 o C and at ambient pressure. The modified-carbon catalyst was prepared by impregnation of active carbon within H2SO4 solution followed by drying at 100 o C for overnight and calcining at 300 o C for 3 h. It was found that biodiesel yield obtained using the hybrid catalytic-plasma reactor was 92.39% and 73.91% when using active carbon and modified-carbon catalysts, respectively better than without plasma. Therefore, there were synergetic effects of non-thermal plasma and catalysis roles for driving the transesterification process. Copyright

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“…In the hybrid catalysis-plasma, the catalyst has important roles such as increasing the reaction surface area, maintaining and probably increasing the non-equilibrium properties of gas discharge, acting as a dielectric-barrier material, and improving the selectivity and efficiency of plasma processes by surface reactions. The catalyst placed in the plasma zone can influence the plasma properties due to the presence of conductive surfaces in the case of metallic catalysts (Heintze & Pietruszka, 2004;Kizling & Järås, 1996). The catalyst can also change the reaction products due to surface reactions.…”

Section: Effect Of Hybrid Catalytic-plasma Dbd Reactor For Ch 4 and Cmentioning

confidence: 99%

“…Some previous researchers implied that the synergistic effect of catalysis-plasma only occurred at high temperature where the catalyst was active. Huang et al (2000) and Heintze & Pietruszka (2004) pointed out that the product selectivity significantly improved only if the temperature was high enough for the catalytic material to become itself active. Zhang et al (2001) also claimed that the reactor wall temperature did not significantly affect the reaction activity (selectivity) over zeolite NaY catalyst under DBD plasma conditions at the temperature range tested (323-423 K).…”

Section: Simulation Of Dbd Plasma -Catalytic Reactor Performancesmentioning

confidence: 99%