Catalytic conversion of methylated aromatics over wood-derived chars - The role of reforming agents and the effect of methyl groups

FUEL

卷:280

Article

Korus, Agnieszka^1,2  Szlek, Andrzej¹  Korus, Irena³  Samson, Abby⁴ 

[1] Silesian Tech Univ, Dept Thermal Technol, Gliwice, Poland

[2] Univ Lincoln, Sch Engn, Lincoln, England

[3] Silesian Tech Univ, Dept Water & Wastewater Engn, Gliwice, Poland

[4] Univ Sheffield, Dept Mech Engn, Sheffield, S Yorkshire, England

关键词: Biochar;    Tar;    Steam reforming;   

DOI  :  10.1016/j.fuel.2020.118521

来源: Elsevier

【 摘 要 】

Toluene steam reforming was performed over three wood-derived chars and compared with a previously-reported pyrolytic conversion study. The heterogeneous mechanism of toluene decomposition was not directly affected by the introduction of steam, but it caused gasification of char and toluene-derived coke, which prolonged the initial high conversion efficiency. Conversely, when oxygen was used as a substitute for steam, a direct ring-opening reaction of toluene was observed, rather than solid carbon combustion. A comparison of benzene, toluene, and p-xylene conversion revealed that the presence of a methyl group on the aromatic ring enhanced its decomposition, regardless of the catalyst's activity. However, a second methyl group did not further improve the conversion and only served to increase the intensity of secondary recombination reactions.

【 授权许可】

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