Hydrothermal Degradation of Cellulose at Temperature from 200 to 300 °C
Abstract
Cellulose was treated with subcritical water in a batch reactor within a temperature range of 200–300 °C and reaction time of 5–60 min. The main phases, such as water-soluble fraction, acetone-soluble fraction and solid residue (remaining cellulose or char), were separated and analyzed. The analysis of water-soluble phase was done by HPLC equipped with UV and RI detector, whereas acetone-soluble phase was analyzed by GC–MS. Total sugar content was determined by the phenol-sulfuric acid colorimetric method. The properties of char such as specific surface area, pore volume, and pore diameter were determined by gas adsorption method. A water-soluble phase mainly consists of sugar monomers and monomer degradation products, while acetone-soluble phase, referred to also as bio-oil, consists of furans, phenols, carboxylic acids, aldehydes, ketones, and high molecular compounds. The reaction mechanism of cellulose in subcritical water has been proposed based on the obtained results.
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Generation of functional groups mainly results from incomplete decomposition or cleavage of hemicellulose/cellulose/lignin/protein or hydrolysis of organic compounds during ionic reactions.
“The generation of functional groups mainly results from incomplete decomposition or cleavage of hemicellulose/cellulose/lignin/protein or hydrolysis of organic compounds during ionic reactions.84,85”
From Sustainable remediation with an electroactive biochar system: mechanisms and perspectives (2020) · cites this paper as [84]
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- Authors
- Gagić, T., Perva-Uzunalić, A., Knez, Ž., & Škerget, M.
- Affiliations
- University of Maribor (SI)
- Corresponding author
- Škerget, Mojca
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-04-12
- Volume
- 57
- Issue
- 18
- Pages
- 6576-6584
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2796527577
- Cited by
- 67
- References
- 48
- Citations by year
- 2026: 9 · 2025: 5 · 2024: 8 · 2023: 15 · 2022: 5 · 2021: 10 · 2020: 11 · 2019: 4
- FWCI
- 2.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Industrial & Engineering Chemistry Research (publishedVersion)
- Funders
- Javna Agencija za Raziskovalno Dejavnost RS (P2-0046)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Subcritical and Supercritical Water Processes
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Keywords
- cellulose, subcritical water, hydrothermal degradation, bio-oil, char, furan, reaction mechanism, specific surface area, pore structure, biomass conversion
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