Catalytic ethanolysis of microcrystalline cellulose over a sulfonated hydrothermal carbon catalyst

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-09-15
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Mcode
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Language
en
Pages
Series
Catalysis Today
Abstract
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.
Description
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Keywords
Ethyl glucoside, Ethyl levulinate, Microcrystalline cellulose, Sulfonated hydrothermal carbon, Supercritical ethanol
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Citation
Wen , Z , Ma , Z , Mai , F , Yan , F , Yu , L , Jin , M , Sang , Y , Bai , Y , Cui , K , Wu , K , Chen , M , Chen , H & Li , Y 2020 , ' Catalytic ethanolysis of microcrystalline cellulose over a sulfonated hydrothermal carbon catalyst ' , Catalysis Today , vol. 355 , pp. 272-279 . https://doi.org/10.1016/j.cattod.2019.05.070