Microwave-assisted catalytic upgrading of co-pyrolysis vapor using HZSM-5 and MCM-41 for bio-oil production: Co-feeding of soapstock and straw in a downdraft reactor

Qiuhao Wu, Yunpu Wang, Lin Jiang, Qi Yang, Linyao Ke, Yujie Peng, Sha Yang, Leilei Dai, Yuhuan Liu, Roger Ruan

Research output: Contribution to journalArticle

Abstract

Microwave-assisted co-pyrolysis of low hydrogen-to-carbon and high hydrogen-to-carbon effective ratio materials with the aid of HZSM-5 and MCM-41 is a promising technique to improve the bio-oil quality. The low content of hydrocarbons and short life cycle of catalyst limit the application of pyrolysis technology in biomass energy conversion. The effects of catalytic temperature, and HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock ratios on the yield and composition of bio-oil were studied in this work. The quality of bio-oil during biomass pyrolysis can be improved by adjusting the operating conditions. The optimal catalytic temperature, and ratios of HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock were 400 °C, 1:1, 2:1, and 1:2, respectively. The addition of MCM-41 was beneficial in prolonging the life of HZSM-5 since the macromolecular compounds cracked when MCM-41 was added which restrain the generation of coke. The co-pyrolysis of soapstock with straw advanced the deoxygenation of oxygen-containing compounds especially phenol from straw during pyrolysis.

Original languageEnglish (US)
Article number122611
JournalBioresource Technology
Volume299
DOIs
StatePublished - Mar 2020

Keywords

  • HZSM-5 catalyst
  • MCM-41 catalyst
  • Microwave-assisted co-pyrolysis
  • Soapstock
  • Straw

PubMed: MeSH publication types

  • Journal Article

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