Carbon-based solid sulfonic acid preparation method using bagasse
A technology of bagasse charcoal and bagasse, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problems of long time, high energy consumption, long and complicated processes and other problems, to achieve the effect of short reaction time, simple preparation process and high yield
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Embodiment 1
[0014] Install an electric stirrer, a thermometer and a water separation and reflux device on a 100mL three-necked flask, add 10mL of concentrated sulfuric acid and 5g of bagasse, heat and stir, and react at 180°C for 40 minutes. The reaction solution was directly poured out, filtered and washed to obtain 3.6 g of a black solid. The acid value is 1.50mmol / g.
Embodiment 2
[0016] Install an electric stirrer, a thermometer and a water separation and reflux device on a 250mL three-necked flask, add 20mL of concentrated sulfuric acid and 10g of bagasse, heat and stir, and react at 200°C for 1 hour. The reaction solution was directly poured out, filtered, and washed to obtain 6.0 g of a black solid. The acid value is 2.25mmol / g.
Embodiment 3
[0018] Concentrated sulfuric acid multiplexing experiment. Collect the water-washed filtrate in Example 2, distill and concentrate to obtain 15 mL of concentrated sulfuric acid, add 10 g of bagasse, heat and stir, and react at 170° C. for 30 minutes. The reaction solution was directly poured out, filtered, and washed to obtain 5.5 g of a black solid. Acid value 0.5mmol / g.
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