Bamboo biochar-catalytic degradation of lignin under microwave heating

Maimaitiaili Tayier, Yunfeng Zhao, Dengle Duan, Rongge Zou, Yunpu Wang, Roger Ruan, Yuhuan Liu

Research output: Contribution to journalArticle

Abstract

Lignin biochar-catalytic depolymerization using biochar Fe-600, Fe-800, Ni-600, Ni-800 catalysts under microwave-heating (180 °C for 30 min) was explored in an ethanol/formic acid (1:1) media. Non-catalyst depolymerization was also studied and compared with the biochar-catalysts results. Characteristics of the bio-char catalysts were analyze by BET, XRD, and FT-IR. GPC, FT-IR, and MALDI-TOF MS spectrometry were also used to characterize the depolymerization products. The experimental results showed that the SBET, Vt, and Vmec and average pore diameter of the biochars are considerably dependent on the preparation temperature and type of cation (Ni2+ or Fe3+). The maximum yield of bio-oil product was obtained as 85 wt% with the addition of biochar Ni-600 and the total amount of oligomers or monomers with a molecular weight of 164 to 446 reaches 80.4%.

Original languageEnglish (US)
Pages (from-to)190-199
Number of pages10
JournalJournal of Wood Chemistry and Technology
Volume40
Issue number3
DOIs
StatePublished - May 3 2020

Keywords

  • Bamboo Organosolv lignin
  • MALDI-TOF MS
  • bamboo biochar-catalyzed depolymerization
  • microwave-assisted depolymerization

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