Upgrading of fast pyrolysis bio-oil over Fe modified ZSM-5 catalyst to enhance the formation of phenolic compounds

Saracoglu E., Uzun B. B., Apaydin-Varol E.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.42, no.33, pp.21476-21486, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 42 Issue: 33
  • Publication Date: 2017
  • Doi Number: 10.1016/j.ijhydene.2017.07.001
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.21476-21486
  • Keywords: Biomass, Catalytic pyrolysis, Upgrading bio-oil, Fe loaded ZSM-5, HYDROGEN-PRODUCTION, BIOMASS, VAPORS, CO, MECHANISM, ZEOLITES, CRACKING, NI
  • Anadolu University Affiliated: Yes


The present study is aimed to investigate the upgrading of beech sawdust pyrolysis bio-oil through catalytic cracking of its vapors over Fe-modified ZSM-5 zeolite in a fixed bed tubular reactor. The zeolite supported iron catalyst was successfully prepared with varying metal loading ratios (1, 5, 10 wt%) via dry impregnation method and further characterized by BET, XRD, and SEM-EDX techniques. TG/FT-IR/MS analysis was used for the detection of biomass thermal degradation. Product yields of non-catalytic and catalytic pyrolysis experiments were determined and the obtained results show that bio-oil yields decreased in the presence of catalysts. Besides, the bio-oil composition is characterized by GC/MS. It was indicated that the entity of the ZSM-5 and Fe/ZSM-5 catalyst reveal a significant enhancement quality of the pyrolysis products in comparison with non-catalytic experiment. The catalyst increased oxygen removal from the organic phase of bio-oil and further developed the production of desirable products such as phenolics and aromatic compounds. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.