CATALYTIC HYDROTHERMAL CONVERSION OF BIO-DERIVED SUGARS FOR LACTIC ACID PRODUCTION USING SOL-GEL SYNTHESIZED ZIRCONIA
| Autor: | Federico A. Piovano, Soledad G. Aspromonte, Carina V. Bergamini, Paula Giménez, Alicia V. Boix |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Latin American Applied Research - An international journal. 53:1-6 |
| ISSN: | 1851-8796 0327-0793 |
| DOI: | 10.52292/j.laar.2023.1145 |
| Popis: | The hydrothermal conversion of a multiple sugars solution (xylose, arabinose and glucose) was studied using high surface ZrO2-based catalysts to produce lactic acid. The catalysts were synthesized by template-assisted sol-gel method and alternative template removal procedures. Samples obtained by template extraction with solvent reported a specific surface area of 323 m2/g, a pore volume of 0.21 cm3/g and a total amount of acid sites of 359 µmol/g. An experimental design was performed to model lactic acid and by-products obtaining around the selected catalyst. The response surface methodology (RSM) was used to optimize the main operating conditions. A mass selectivity of 35.1 % towards lactic acid was found at 183 °C and 212 min. In addition, the reaction mechanisms involved were proposed based on intermediates and degradation compounds detected by HPLC analysis. |
| Databáze: | OpenAIRE |
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