Method for preparing ethyl levulinate based on catalysis of alcoholization of furfuryl alcohol with carbon-based solid acid
A technology of ethyl levulinate and carbon-based solid acid, which is applied in the field of ethyl levulinate, can solve problems such as non-compliance with green chemistry, difficult separation of products, severe reaction conditions, etc., and achieve good application prospects, convenient post-processing, The effect of simple reaction system
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Embodiment 1
[0019] Add 1mL of furfuryl alcohol, 0.5g of hydrothermal carbon-based solid acid and 20mL of ethanol together into a 50mL reaction kettle, and start the reaction after sealing it. The stirring speed is 500rpm. When the temperature rises to 125°C, start timing. h, after the reaction is over, immediately immerse the reactor in cold water to cool down to room temperature. The reaction solution was centrifuged at 10000rpm, and the supernatant was taken for analysis and detection. After gas chromatography analysis, it was compared with the gas chromatography standard spectrum of furfuryl alcohol and ethyl levulinate (see figure 1 and figure 2 ) After comparison, the calculated yield of ethyl levulinate can reach 63.6%.
Embodiment 2
[0021] Add 1mL of furfuryl alcohol, 0.5g of dry distilled carbon-based solid acid and 20mL of ethanol into a 50mL reaction kettle, and start the reaction after sealing. After the end of the reaction, immediately immerse the reactor in cold water to cool down to room temperature. The reaction solution was centrifuged at 10,000 rpm, and the supernatant was taken for analysis and detection. The yield of ethyl levulinate was calculated by gas chromatography to reach 61.1%.
Embodiment 3
[0023] Add 1mL of furfuryl alcohol, 0.5g of hydrothermal carbon-based solid acid and 20mL of ethanol into a 50mL reaction kettle, and start the reaction after sealing. The stirring speed is 500rpm. When the temperature rises to 100°C, start timing. h, after the reaction is over, immediately immerse the reactor in cold water to cool down to room temperature. The reaction solution was centrifuged at 10,000 rpm, and the supernatant was taken for analysis and detection. The yield of ethyl levulinate was calculated by gas chromatography to reach 39.5%.
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