Catalytic ethanolysis of microcrystalline cellulose over a sulfonated hydrothermal carbon catalyst
| Autor: | Kai Wu, Yongdan Li, Yunfei Bai, Fei Yan, Yushuai Sang, Fuhang Mai, Meng Jin, Kai Cui, Mengmeng Chen, Zhe Wen, Linhao Yu, Hong Chen, Zewei Ma |
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| Přispěvatelé: | Tianjin University, Department of Chemical and Metallurgical Engineering, Industrial chemistry, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2020 |
| Předmět: |
Ethyl glucoside
chemistry.chemical_element Microcrystalline cellulose 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound Cellulose ta215 Ethyl levulinate Ethanol Supercritical ethanol General Chemistry 021001 nanoscience & nanotechnology Supercritical fluid 0104 chemical sciences chemistry Amorphous carbon Yield (chemistry) 0210 nano-technology Carbon Sulfonated hydrothermal carbon Nuclear chemistry |
| Zdroj: | Catalysis Today. 355:272-279 |
| ISSN: | 0920-5861 |
| Popis: | Tarkista embargo! MSo The catalytic ethanolysis of microcrystalline cellulose in supercritical ethanol is examined over a sulfonated hydrothermal carbon catalyst (SHTC). SHTC is amorphous carbon containing −OH, −COOH and −SO3H groups with total acidity of 7.15 mmol/g and −SO3H acidity of 1.72 mmol/g. SHTC shows high catalytic activity towards the ethanolysis of cellulose in supercritical ethanol. Complete conversion of microcrystalline cellulose with high yields of ethyl levulinate and ethyl glucoside is obtained. The reaction temperature, time and catalyst amount have significant effects on the catalytic performances of SHTC. Appropriate reaction time and less catalyst amount are favorable for the production of ethyl glucoside, while prolonged reaction time and appropriate catalyst amount favor the production of ethyl levulinate. The highest yield of ethyl glucoside as 420.9 mg/g cellulose is obtained over 0.1 g SHTC at 245 ºC for 1 h. The highest yield of ethyl levulinate as 817.6 mg/g cellulose is achieved over 0.3 g SHTC at 245 ºC for 1 h. SHTC shows good stability in the recycle experiments with slight loss of catalytic activity. |
| Databáze: | OpenAIRE |
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