Conversion of glycerol to lactic acid over Au/bentonite catalysts in alkaline solution
| Autor: | Meltem Yildiz, Busra Sever |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
inorganic chemicals
010405 organic chemistry Chemistry 010402 general chemistry Heterogeneous catalysis 01 natural sciences Catalysis 0104 chemical sciences Lactic acid chemistry.chemical_compound Yield (chemistry) Bentonite Glycerol Hydroxide Physical and Theoretical Chemistry Selectivity Nuclear chemistry |
| Zdroj: | Reaction Kinetics, Mechanisms and Catalysis. 130:863-874 |
| ISSN: | 1878-5204 1878-5190 |
| DOI: | 10.1007/s11144-020-01805-9 |
| Popis: | The oxidation of glycerol into lactic acid using 1 wt% Au/bentonite as heterogeneous catalyst was studied. Several reaction parameters were evaluated: catalyst reduction, oxygen presence, catalyst amount, hydroxide type and NaOH/glycerol molar ratio and reaction time. The textural and structural properties of the bentonite supported Au catalysts were evaluated by XRD, SEM and ICP. The reactions were performed in a 100 mL volume three-necked and round-bottomed flask placed in an oil bath at 90 °C reaction temperature and atmospheric pressure. It was possible to achieve a glycerol conversion of about 82.4% with selectivity to lactic acid of 92.3% and 76.1% yield, at 90 °C of reaction temperature, NaOH/glycerol = 8 mol ratio by using 0.25 g catalyst after 240 min reaction. |
| Databáze: | OpenAIRE |
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