Cited by 67Subcritical and Supercritical Water ProcessesThermochemical Biomass Conversion ProcessesBiofuel production and bioconversion

Hydrothermal Degradation of Cellulose at Temperature from 200 to 300 °C

Gagić, Tanja, Perva-Uzunalić, Amra, Knez, Željko, Škerget, Mojca·2018·Industrial & Engineering Chemistry Research

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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Crossref · 10.1021/acs.iecr.8b00332

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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”

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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
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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