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One-pot synthesis of Fe modified lignin biochar for ex-situ catalytic fast pyrolysis of enzymatic hydrolysis lignin to promote the generation of aromatic hydrocarbons.
- Source :
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Journal of Analytical & Applied Pyrolysis . Jun2024, Vol. 180, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
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Abstract
- The utilization of waste lignin to produce bio-oil rich in aromatics aromatic hydrocarbons is promising and attractive for a wide range of applications. Fe-modified lignin biochar (xFe/ALC) prepared using a one-step method was utilized as catalysts to investigate their impact on product distribution, aromatic hydrocarbon generation, and pathways during ex-situ catalytic fast pyrolysis of enzymatic hydrolysis lignin. The results revealed that the addition of Fe enhanced the production of gas products such as H 2 , while decreasing bio-oil yield. The lowest bio-oil yield, at 12.10 wt%, was observed at a Fe loading of 25 wt%, however the relative content of aromatic hydrocarbons reached a maximum value of 16.24 area%. Compared to the pyrolysis of lignin alone, their contents increased by 2.46 times, with the content of monocyclic aromatic hydrocarbons (toluene, ethylbenzene, styrene, xylene) increasing by 1.5–3.8 times. Spent 25Fe/ALC had good stability on the production of aromatic hydrocarbons. Compared with non-catalytic pyrolysis of lignin, the aromatic hydrocarbons content for spent 25Fe/ALC after four cycles increased by 26.70%. [Display omitted] • Fe modified biochar was synthesized by enzymolysis lignin using a one-pot method. • The loading of Fe could regulate the structure and acidity of lignin biochar. • Fe/ALC catalysts were used for ex-situ catalytic pyrolysis of enzymolysis lignin. • The aromatics content for 25Fe/ALC was 2.46 times higher than that without catalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- *AROMATIC compounds
*LIGNINS
*BIOCHAR
*PYROLYSIS
*WASTE recycling
*HYDROLYSIS
Subjects
Details
- Language :
- English
- ISSN :
- 01652370
- Volume :
- 180
- Database :
- Academic Search Index
- Journal :
- Journal of Analytical & Applied Pyrolysis
- Publication Type :
- Academic Journal
- Accession number :
- 177864250
- Full Text :
- https://doi.org/10.1016/j.jaap.2024.106560