Nickel catalyst in coupled plasma-catalytic system for tar removal

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...

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Bibliographic Details
Published inPolish journal of chemical technology Vol. 23; no. 3; pp. 24 - 29
Main Authors Woroszył-Wojno, Joanna, Młotek, Michał, Ulejczyk, Bogdan, Krawczyk, Krzysztof
Format Journal Article
LanguageEnglish
Published Szczecin Sciendo 01.09.2021
De Gruyter Poland
Subjects
Aluminum oxide
Benzyl alcohol
Biomass
Catalysts
Conversion
Deactivation
Decomposition
Discharge
Gas composition
Gasification
gliding discharge
Nickel
nickel catalyst
plasma-catalytic system
Pyrolysis
tar decomposition
Tars
Toluene
Transitional aluminas
Weight
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Summary: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 Al (α-Al ) and Peshiney (γ-Al ) carrier in gas composition similar to the gas after biomass pyrolysis. The optimal concentration of nickel was identified to be 10% by weight on Al . It was stable in all studied initial toluene concentrations, discharge power while C 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.
ISSN:1899-4741
1509-8117
1899-4741
DOI:10.2478/pjct-2021-0026