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

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

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.

• Jezik: Angleški jezik
• Ključne besede: xylose, furfural, dehydration, reaction, microkinetic model
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: Str. 2303–2317
• Številčenje: Vol. 15, iss. 2
• PID: 20.500.12556/RUL-166700
• UDK: 66
• ISSN pri članku: 2190-6823
• DOI: 10.1007/s13399-023-04969-1
• COBISS.SI-ID: 171108611
• Datum objave v RUL: 22.01.2025

Gradivo je del revije

• Naslov: Biomass conversion and biorefinery
• Skrajšan naslov: Biomass convers. biorefin.
• Založnik: Springer Nature
• ISSN: 2190-6823
• COBISS.SI-ID: 520489241

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kemijska tehnologija, katalizatorji, kinetični modeli, matematični modeli