| Autor: |
Chen, Yandan, Ai, Xiaolin, Huang, Biao, Huang, Mingjie, Huang, Yan, Lu, Yi |
| Předmět: |
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| Zdroj: |
Cellulose; Jul2017, Vol. 24 Issue 7, p2743-2752, 10p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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