Microwave-assisted catalytic pyrolysis of torrefied corn cob for phenol-rich bio-oil production over Fe modified bio-char catalyst

Leilei Dai, Zihong Zeng, Xiaojie Tian, Lin Jiang, Zhenting Yu, Qiuhao Wu, Yunpu Wang, Yuhuan Liu, Roger Ruan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Microwave-assisted catalytic pyrolysis of torrefied corn cob into phenol-rich bio-oil on Fe modified bio-char catalyst was investigated in this study. The well-developed surface pore was confirmed by scanning electronic microscope (SEM) images and nitrogen adsorption/desorption isotherms, indicating that the porous structure of bio-char depended on the Fe modification to a large extent. Temperature-programmed desorption of NH3 (NH3-TPD) analysis showed that the Fe modified bio-char catalyst mainly presented strong acid sites. The use of bio-char catalyst can decrease the bio-oil yield and increase the gas yield but the biochar did not experience any significant change because of the ex-situ catalysis mode. Catalytic pyrolysis of torrefied corn cob using Fe modified bio-char catalyst was able to produce the higher yields and selectivities of phenol and cresol, where the catalytic performance of the bio-char catalyst was superior to commercial activated carbon. In addition, the catalyst deactivation and regenation tests were also conducted to evaluate the service life of the catalyst.

Original languageEnglish (US)
Article number104691
JournalJournal of Analytical and Applied Pyrolysis
Volume143
DOIs
StatePublished - Oct 2019

Keywords

  • Bio-char
  • Catalytic pyrolysis
  • Microwave
  • Phenol-rich bio-oil

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