Conversion of tetrachloromethane
in large scale gliding discharge reactor

Młotek, Michał; Reda, Ewelina; Krawczyk, Krzysztof

doi:10.1515/chem-2015-0022

Cited by 2 publications

(2 citation statements)

References 25 publications

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“…Toluene was used as a model of tar compounds. The conversion of toluene was investigated in a three-phase gliding discharge reactor described previously − at normal pressure (Figure ). The 15 mm catalyst bed was located above the end of the electrodes.…”

Section: Methodsmentioning

confidence: 99%

Decomposition of Toluene in Coupled Plasma-Catalytic System

Młotek

Ulejczyk

Woroszył

et al. 2020

Ind. Eng. Chem. Res.

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The study of toluene conversion, in a gas such as the one obtained during the pyrolysis of biomass, was conducted at atmospheric pressure in homogeneous and in coupled plasma-catalytic systems. The effects of discharge power, initial concentration of toluene, and the presence of the bed of NiO/Al2O3 - G-0117 (industrial catalyst for methane water shift) on the conversion of C7H8, the composition of the outlet gas, and its calorific value have been investigated. The gas flow rate was 1000 Nl/h and the initial gas composition was CO (0.13), CO2 (0.12), H2 (0.25), and N2 (0.5). The initial toluene concentration was in the range of 2000–4000 ppm. The obtained results show that the conversion of toluene increases with discharge power and the highest one was obtained in the coupled plasma-catalytic system. It was higher than that in the homogeneous system of gliding discharge plasma. The composition of gas changed within the range of a few percent. In the outlet gas acetylene, ethylene and ethane were observed. Trace amounts of toluene were reduced to benzene and formed C3 and C4 hydrocarbons. In an extended process, the reduction of NiO to metallic nickel, methanation reaction of carbon oxides, and an increase of the conversion of toluene were observed. The conversion of toluene in the extended process was 92%. The catalytic activity of G-0117 in a coupled system increased during the study conducted for about 40 min. The use of G-0117 catalyst led to an increase in the calorific value of the outlet gas. In every examined system, it was above the minimal level demanded by engines and turbines. After the process, carbon deposits were present.

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Section: Methodsmentioning

confidence: 99%

Decomposition of Toluene in Coupled Plasma-Catalytic System

Młotek

Ulejczyk

Woroszył

et al. 2020

Ind. Eng. Chem. Res.

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“…To choose the most effi cient system and active phase concentration, unit energy consumption was also calculated using below equation 22 : UEC = unit energy consumption, MJ/mol, P -discharge power, W, W o [C 7 H 8 ] -toluene fl ow, mol/s, x -toluene conversion.…”

Section: Methodsmentioning

confidence: 99%

Nickel catalyst in coupled plasma-catalytic system for tar removal

Woroszył-Wojno

Młotek

Ulejczyk

et al. 2021

Polish Journal of Chemical Technology

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Tar formation is a significant issue during biomass gasification. Catalytic removal of tars with the use of nickel catalyst allows to obtain high conversion rate but coke formation on catalysts surface lead to its deactivation. Toluene decomposition as a tar imitator was studied in gliding discharge plasma-catalytic system with the use of 5%, 10% and 15% by weight Ni and NiO catalyst on Al2O3 (α-Al2O3) and Peshiney (γ-Al2O3) carrier in gas composition similar to the gas after biomass pyrolysis. The optimal concentration of nickel was identified to be 10% by weight on Al2O3. It was stable in all studied initial toluene concentrations, discharge power while C7H8 conversion rate remained high – up to 82%. During the process, nickel catalysts were deactivated by sooth formation on the surface. On catalysts surface, toluene decomposition products were identified including benzyl alcohol and 3-hexen-2-one.

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Conversion of tetrachloromethane in large scale gliding discharge reactor

Cited by 2 publications

References 25 publications

Decomposition of Toluene in Coupled Plasma-Catalytic System

Decomposition of Toluene in Coupled Plasma-Catalytic System

Nickel catalyst in coupled plasma-catalytic system for tar removal

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