Reaction microkinetic model of xylose dehydration to furfural over beta zeolite catalyst

Rakić, Emilija (author), Kostyniuk, Andrii (author), Nikačević, Nikola (author), Likozar, Blaž (author)

In recent decades, there has been a growing interest in bio-refineries as a crucial element in transitioning to a low-carbon economy. One specific aspect of this interest is the conversion of carbohydrates into separate platform chemicals, such as furfural (FUR), which play a significant functional role in various daily life processes. This research paper focuses on investigating the use of a H-beta catalyst with SiO$_2$/Al$_2$O$_3$ = 28 for producing furfural from xylose in water. Various conditions, such as temperature and initial solution concentration, are studied to determine their effect on FUR yield. The highest FUR yield (40 mol.%) is obtained when FUR is the only product species. We also report that about 90% yield from reaction with fresh catalyst can be achieved after catalyst regeneration. The activation energies for the reaction on the catalyst surface are found to be in the range of 38–75 kJ/mol. A mathematical kinetic model with three irreversible steps is derived to estimate the reaction sequence at 160, 180, and 200 °C. The model takes into account mechanisms such as adsorption, desorption, and transport (internal or external). Our results suggest that the H-beta catalyst shows high activity toward FUR yield and could be a promising alternative for mass-scale production of the latter.

• Language: English
• Keywords: xylose, furfural, dehydration, reaction, microkinetic model
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: Str. 2303–2317
• Numbering: Vol. 15, iss. 2
• PID: 20.500.12556/RUL-166700
• UDC: 66
• ISSN on article: 2190-6823
• DOI: 10.1007/s13399-023-04969-1
• COBISS.SI-ID: 171108611
• Publication date in RUL: 22.01.2025

Record is a part of a journal

• Title: Biomass conversion and biorefinery
• Shortened title: Biomass convers. biorefin.
• Publisher: Springer Nature
• ISSN: 2190-6823
• COBISS.SI-ID: 520489241

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: kemijska tehnologija, katalizatorji, kinetični modeli, matematični modeli