Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 209, Issue -, Pages 692-702Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2022.04.062
Keywords
Lignin; Carbon foam; Lignin valorization
Funding
- Young Taishan Scholars Program of Shandong Province [tsqn201909132]
- Natural Science Foundation of Shandong Province [ZR2020QB195]
- Startup Foundation from Qingdao Agricultural University [665/1119020]
Ask authors/readers for more resources
This work presents a simple method to convert lignin into carbon foam materials. By solely heating lignin, carbon foam with porous structures can be produced. Different morphologies and properties of lignin foam can be obtained by modifying the heating profile or fractionating the lignin. The resulting lignin-derived carbon foams possess well porous structures and other attractive properties.
To achieve lignin valorization, we reported a simple method to direct covert lignin into carbon foam materials in this work. Unlike multiple steps required to fabricate traditional carbon foams from most of other precursors (often non-renewable), the approach herein required solely heating for carbon production. We found that the intrinsic features of lignin render the formation of lignin block meanwhile generate the porous structure under the invented heating course. Three key factors including glass transition temperature, crosslinking ability, and thermal stability of lignin were identified to determine the successful fabrication of lignin foam (i.e., precursor of carbon foam). Upon tuning the heating profile or fractionating the lignin, lignin foam with different morphologies and properties were obtained. After carbonization, the selected lignin-derived carbon foams possessed well porous structures with bulk densities of 0.52 or 0.62 g cm-3, superior integrity with strength properties of around 10 MPa, BET surface areas of 143.29 or 325.86 m2 g-1, and many other attractive properties. This work is expected to stimulate further seek of lignin valorization in carbon foam production.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available