20.500.12556/RUL-166700 Reaction microkinetic model of xylose dehydration to furfural over beta zeolite catalyst 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. xylose furfural dehydration reaction microkinetic model kemijska tehnologija katalizatorji kinetični modeli matematični modeli true false true Angleški jezik Slovenski jezik Članek v reviji 2025-01-22 08:31:57 2025-01-22 08:31:58 2025-01-23 03:54:05 0000-00-00 00:00:00 2025 0 0 Str. 2303–2317 iss. 2 Vol. 15 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66 2190-6823 10.1007/s13399-023-04969-1 171108611 s13399-023-04969-1.pdf s13399-023-04969-1.pdf 1 9AD01A119EB623AC327E1E726E4565C2 099f6bf5efabd97d1303a8f79a831972908f8f6d931950bbeff01fe75e5b5257 9dbdb820-d892-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=198502 https://link.springer.com/article/10.1007/s13399-023-04969-1 1 2e28a5e1-d892-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=198501 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0