Integrating pyrolysis and ex-situ catalytic reforming by microwave heating to produce hydrocarbon-rich bio-oil from soybean soapstock

Lin Jiang, Yunpu Wang, Leilei Dai, Zhenting Yu, Qiuhao Wu, Yunfeng Zhao, Yuhuan Liu, Roger Ruan, Linyao Ke, Yujie Peng, Donghua Xia, Li Jiang

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

The composite catalysts were synthesized with SiC powder and ZSM-5 and were characterized by Brunauer-Emmett-Teller, X-ray diffraction, thermogravimetric analysis, pyridine-infrared spectroscopy, and scanning electron microscopy. The catalysts showed a high heating rate and excellent catalytic performance for pyrolysis vapors, and the product fractional distribution and chemical compositions of bio-oil in a tandem system (microwave pyrolysis and microwave ex-situ catalytic reforming) was examined. Experimental results confirmed the quality of bio-oil produced by the microwave-induced catalytic reforming was better than that product through electric heating. Additionally, 36.94 wt% of bio-oil was obtained using the catalyst with 20%ZSM-5/SiC under the following conditions: feed-to-catalyst ratio, 2:1; pyrolysis temperature, 550 °C; and catalytic temperature, 350 °C. The selectivities of hydrocarbons reached up to 75.88%. After five cycles, the activity of the regenerated composite catalyst was retained at 95% of the original catalyst.

Original languageEnglish (US)
Article number122843
JournalBioresource Technology
Volume302
DOIs
StatePublished - Apr 2020

Keywords

  • Catalytic pyrolysis
  • Composite catalyst
  • Microwave
  • Soybean soapstock
  • ZSM-5

PubMed: MeSH publication types

  • Journal Article

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