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The importance of inherent inorganics and the surface area of wood char for its gasification reactivity and catalytic activity towards toluene conversion

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  • Korus, Agnieszka
  • Ravenni, Giulia
  • Loska, Krzysztof
  • Korus, Irena
  • Samson, Abby
  • Szlęk, Andrzej

Abstract

Gasification char is an effective catalyst for tar reforming because of the abundance of surface active sites, which are available for heterogeneous conversion of hydrocarbons and interactions with the reforming agents. This paper focuses on the importance of certain char properties for the gasification and catalytic reforming. Specifically, the gasification reactivity of spruce char is examined, along with its performance as a catalyst for toluene conversion. The material used for this work was produced via gasification of spruce wood chips in the pilot TwoStage Viking plant (Technical University of Denmark, Risø). To obtain a set of samples with varied surface area characteristics and inorganic content, three pre-treatments were applied to samples of this char: acid washing, steam activation, and high-temperature treatment. The gasification and catalytic experiments performed with the untreated and modified materials revealed that the reactivity of the char during gasification in CO2 depends mostly on the metal content in the sample, whereas the conversion of toluene was insensitive to the char inorganic content, but strongly correlated with the surface area available for heterogeneous reactions with toluene.

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  • Korus, Agnieszka & Ravenni, Giulia & Loska, Krzysztof & Korus, Irena & Samson, Abby & Szlęk, Andrzej, 2021. "The importance of inherent inorganics and the surface area of wood char for its gasification reactivity and catalytic activity towards toluene conversion," Renewable Energy, Elsevier, vol. 173(C), pages 479-497.
    • Handle: RePEc:eee:renene:v:173:y:2021:i:c:p:479-497
    DOI: 10.1016/j.renene.2021.03.130
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    References listed on IDEAS

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    1. Lee, Jechan & Kim, Ki-Hyun & Kwon, Eilhann E., 2017. "Biochar as a Catalyst," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 70-79.
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    Cited by:

    1. Liu, Haolin & Ye, Chao & Xu, Yousheng & Wang, Qisong, 2022. "Effect of activation conditions and iron loading content on the catalytic cracking of toluene by biochar," Energy, Elsevier, vol. 247(C).
    2. Ali Abdelaal & Vittoria Benedetti & Audrey Villot & Francesco Patuzzi & Claire Gerente & Marco Baratieri, 2023. "Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review," Energies, MDPI, vol. 16(10), pages 1-24, May.
    3. Baath, Yuvraj Singh & Nikrityuk, Petr A. & Gupta, Rajender, 2022. "Experimental and numerical verifications of biochar gasification kinetics using TGA," Renewable Energy, Elsevier, vol. 185(C), pages 717-733.
    4. Fabio Montagnaro & Lucio Zaccariello, 2022. "Gasification of Spruce Wood Chips in a 1.5 MW th Fluidised Bed Reactor," Energies, MDPI, vol. 15(16), pages 1-13, August.

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