Catalytic co-pyrolysis of kraft lignin with refuse-derived fuels using ni-loaded ZSM-5 type catalysts

Hyung Won Lee, Jin Sun Cha, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The catalytic co-pyrolysis (CCP) of Kraft lignin (KL) with refuse-derived fuels (RDF) over HZSM-5, Ni/HZSM-5, and NiDHZSM-5 (Ni/desilicated HZSM-5) was carried out using pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS) to determine the effects of the nickel loading, desilication of HZSM-5, and co-pyrolysis of KL with RDF. The catalysts were characterized by Brunauer–Emmett–Teller surface area, X-ray diffraction, and NH3-temperature programed desorption. The nickel-impregnated catalyst improved the catalytic upgrading efficiency and increased the aromatic hydrocarbon production. Compared to KL, the catalytic pyrolysis of RDF produced larger amounts of aromatic hydrocarbons due to the higher H/Ceff ratio. The CCP of KL with RDF enhanced the production of aromatic hydrocarbons by the synergistic effect of hydrogen rich feedstock co-feeding. In particular, Ni/DHZSM-5 showed higher aromatic hydrocarbon formation owing to its higher acidity and mesoporosity.

Original languageEnglish
Article number506
JournalCatalysts
Volume8
Issue number11
DOIs
StatePublished - Nov 2018

Keywords

  • Catalytic co-pyrolysis
  • Desilication
  • Kraft lignin
  • Nickel
  • Refuse-derived fuels

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