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Production of MAH-rich bio-oil from co-pyrolysis of biomass and plastics using carbonized MOF catalysts under microwave irradiation

Author

Listed:
  • Chen, Yasen
  • Wu, Xingguo
  • Chen, Hai
  • Chen, Wei
  • Hu, Junhao
  • Chang, Chun
  • Pang, Shusheng
  • Li, Pan

Abstract

This study investigates the effects of various carbonized MOF catalysts on the properties of products derived from microwave-assisted co-pyrolysis of biomass and plastics. The Cr@C catalysts were prepared from MIL-101(Cr) precursors at different microwave carbonization temperatures, while Fe/Cr@C catalysts were synthesized under varying Fe loadings. Characterization of the catalysts was performed using XRD, BET, and FT-IR. The distribution of solid, liquid, and gaseous products, as well as the composition of bio-oil and syngas, were analyzed. The results show that the 5Fe/Cr@C catalyst achieved the highest pyrolysis gas yield (33.05 wt%), while the 15Fe/Cr@C catalyst produced the highest hydrogen yield (24.97 vol%). The Cr@C catalyst promoted hydrocarbon production, with Cr@C-700 achieving a total hydrocarbon content of 51.04 %. The incorporation of Fe enhanced the selectivity of Cr@C catalysts for monocyclic aromatic hydrocarbons(MAHs) in the bio-oil. The aromatic content reached a maximum of 19.88 % with the 15Fe/Cr@C catalyst. Notably, the MAHs content in the 5Fe/Cr@C catalyst accounted for 97.1 % of the total aromatic hydrocarbons. This research provides valuable insights into the potential of carbonized MOF catalysts for producing bio-oil rich in single-ring aromatic hydrocarbons from microwave-assisted co-pyrolysis of biomass and plastics.

Suggested Citation

  • Chen, Yasen & Wu, Xingguo & Chen, Hai & Chen, Wei & Hu, Junhao & Chang, Chun & Pang, Shusheng & Li, Pan, 2024. "Production of MAH-rich bio-oil from co-pyrolysis of biomass and plastics using carbonized MOF catalysts under microwave irradiation," Energy, Elsevier, vol. 313(C).
    • Handle: RePEc:eee:energy:v:313:y:2024:i:c:s0360544224038271
    DOI: 10.1016/j.energy.2024.134049
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