Journal
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
Volume 40, Issue 3, Pages 190-199Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/02773813.2020.1741643
Keywords
Bamboo Organosolv lignin; bamboo biochar-catalyzed depolymerization; microwave-assisted depolymerization; MALDI-TOF MS
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Funding
- Research Project of State Key Laboratory of Food Science and Technology Nanchang University [SKLF-ZZB-201722]
- Key project of Jiangxi Provincial Department of Science and Technology Jiangxi [20161BBF60057]
- National Natural Science Foundation of China [21466022, 21878137, 21766019]
- Natural Science Foundation of Jiangxi Province [20181BAB206030]
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Lignin biochar-catalytic depolymerization using biochar Fe-600, Fe-800, Ni-600, Ni-800 catalysts under microwave-heating (180 degrees 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 S-BET, V-t, and V-mec 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%.
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