Journal
CELLULOSE
Volume 29, Issue 3, Pages 1463-1472Publisher
SPRINGER
DOI: 10.1007/s10570-021-04387-4
Keywords
Cellulose; Catalytic pyrolysis; Levoglucosan; Levoglucosenone
Funding
- Guangdong Basic and Applied Basic Research Foundation [2021A1515012063]
- Foundation of State Key Laboratory of Utilization of Woody Oil Resource [GZKF202116]
- Youth Innovation Promotion Association of CAS [2021350, 2020GDASYL-20200102010, 2020GDASYL-20200102009]
- Guangdong Academy of Sciences, China
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This study improved the production of levoglucosan and levoglucosenone from acid-impregnated cellulose through fast pyrolysis. The impregnation of acid reduced the activation energy and reaction temperature, significantly increasing the yield of levoglucosan. The study demonstrated the potential for industrial production of levoglucosan and levoglucosenone from cellulose at low temperatures.
In this research, the production of levoglucosan (LG) and levoglucosenone (LGO) was improved from acid-impregnated cellulose via fast pyrolysis. Thermogravimetric and kinetic analysis disclosed the production formation mechanism. The impregnation of acid could reduce the activation energy and lower the reaction temperature. Furthermore, the yield of LG from H3PO4- and H2SO4-impregnated cellulose increased significantly (26.4-35.8 wt%) compared with that of pure cellulose (7.5 wt%) pyrolysis at 300 degrees C. At 350 degrees C, 0.1 wt% H3PO4-impregnated cellulose gave a maximum LGO yield (18.3 wt%) via pyrolysis, which increased 36 times concerning that of cellulose without acid impregnation (0.5 wt%). This study exhibited great potential for industrial LG and LGO production from cellulose at low temperatures.
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