| 摘要 |
Provided is a method for preparing a solid acid catalyst with a high acid content. The method utilizes plant waste as a raw material, and comprises: first drying the plant waste, and then grinding and sieving the dried plant waste; adding, while stirring, the plant waste to a concentrated sulfuric acid to evenly mix the same; performing dehydration and carbonization at a room temperature for 10-24 h, and then performing sulfonation at a temperature of 100-200ºC for 15-30 h to obtain a solid mixture; rinsing the mixture with hot water to remove residual liquid acid from the solid mixture; and filtering, drying and grinding the rinsed solid to obtain a solid acid catalyst. The solid acid has an acidity of 3.5-5.0 mmol/g, and the solid acid catalyst is called GDUT-1. |
