Obtaining xylitol by hydrolysis-hydrogenation of liquors derived from sugarcane bagasse
| Autor: | Cerioni Julieta L., Vallejos Maria E., Felissia Fernando E., Area María C., Nichio Nora N., Santori Gerardo F. |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Chemical Industry and Chemical Engineering Quarterly, Vol 29, Iss 1, Pp 43-52 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1451-9372 2217-7434 |
| DOI: | 10.2298/CICEQ210721012C |
| Popis: | This work presents the study of heterogeneous catalysis of sugarcane bagasse hydrothermal treatment spent liquors using a sulfonated resin. Besides, results were compared with those obtained by a conventional route using sulfuric acid as a homogeneous catalyst. Heterogeneous catalysis is suitable for the hydrolysis of sugarcane bagasse hydrothermal liquors under mild conditions (100°C and 6 h). The obtained maximum xylose yield was 82% due to furfural formation, which causes a xylose selectivity drop. The hydrogenation of this xylose-rich liquor at 100 °C and 3 MPa of hydrogen pressure employing a supported Ni/γ-Al2O3 produced the total conversion of xylose with a selectivity towards xylitol of 100% by using a catalyst to xylose mass ratio of 0.5. Heterogeneous catalysis in a two-step route (hydrolysis and hydrogenation) constitutes an outstanding alternative to producing xylitol from sugarcane bagasse hydrothermal spent liquors since materials can be easily separated and reused in several reaction cycles. |
| Databáze: | Directory of Open Access Journals |
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