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- Title
Consecutive preparation of hydrochar catalyst functionalized in situ with sulfonic groups for efficient cellulose hydrolysis.
- Authors
Chen, Yandan; Ai, Xiaolin; Huang, Biao; Huang, Mingjie; Huang, Yan; Lu, Yi
- Abstract
Hydrochars in situ functionalized with -SOH groups were generated from kenaf core via a low-temperature hydrothermal carbonization process of 105 °C with a consecutive catalysis of HSO. The micro-morphology of the hydrochars was strongly affected by the sulfuric acid concentration. Sphere-like particles with size varying between 200 nm and 1 μm were obtained when the acid concentration was 52 wt%. Acid density of the hydrochar increased with the HSO concentration increasing. The presence of considerable acidic groups of -SOH, -COOH, and -OH on the surface of hydrochars was evidenced by Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy. The hydrochar obtained can be used directly for effective catalytic hydrolysis of cellulose without any post-modification. This study proposed a promising sustainable and cost-effective route for facile production of acidic hydrochar from crude plant with tunable properties.
- Subjects
HYDROCHARA; CATALYSTS; HYDROTHERMAL carbonization; SULFURIC acid; FOURIER transform infrared spectroscopy
- Publication
Cellulose, 2017, Vol 24, Issue 7, p2743
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-017-1306-x