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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. Shen, Yafei, 2015. "Chars as carbonaceous adsorbents/catalysts for tar elimination during biomass pyrolysis or gasification," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 281-295.
    2. Ravenni, Giulia & Sárossy, Zsuzsa & Ahrenfeldt, Jesper & Henriksen, Ulrik Birk, 2018. "Activity of chars and activated carbons for removal and decomposition of tar model compounds – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 94(C), pages 1044-1056.
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    5. Bhandari, Pushpak N. & Kumar, Ajay & Bellmer, Danielle D. & Huhnke, Raymond L., 2014. "Synthesis and evaluation of biochar-derived catalysts for removal of toluene (model tar) from biomass-generated producer gas," Renewable Energy, Elsevier, vol. 66(C), pages 346-353.
    6. 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.
    7. Patuzzi, Francesco & Prando, Dario & Vakalis, Stergios & Rizzo, Andrea Maria & Chiaramonti, David & Tirler, Werner & Mimmo, Tanja & Gasparella, Andrea & Baratieri, Marco, 2016. "Small-scale biomass gasification CHP systems: Comparative performance assessment and monitoring experiences in South Tyrol (Italy)," Energy, Elsevier, vol. 112(C), pages 285-293.
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    Cited by:

    1. 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.
    2. 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).
    3. 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.
    4. 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.

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