可再生能源2024，Vol.42Issue(5)：592-600,9.
超低酸催化纤维素醇解制备乙酰丙酸乙酯
Preparation of ethyl levulinate from cellulose alcoholysis catalyzed by extremely acid
摘要
Abstract
Ethyl levulinate(EL)is a highly promising biomass fuel and additive,and the production of EL using yield-rich biomass is beneficial to the industrialized large-scale production of EL.In this article,we studied the effects of sulfuric acid dosage,reaction time,reaction temperature and substrate concentration on the yield of EL using ultra-low concentration sulfuric acid catalyzed cellulose,and optimized the EL production process by using response surface Box-Behnken model to study the effects of various factors on the yield of EL,and obtained the optimal process conditions for EL production from ultra-low concentration sulfuric acid catalyzed cellulose:sulfuric acid dosage 0.5%,reaction temperature 204℃,reaction time 240 min,substrate concentration 29 g/L reaction,the actual average yield of EL was 66.70%,with a relative error of 3.25%from the theoretical prediction.GC-MS analyzed the distribution of alcoholysis products of ultra-low concentration sulfuric acid-catalyzed cellulose under different reaction times,and proposed possible reaction pathways,the results of which can provide reference and reference for the alcoholysis conversion of cellulosic biomass.关键词
纤维素/超低酸/乙酰丙酸乙酯/响应面/醇解Key words
cellulose/extremely low acid/ethyl levulinate/response surface methodology/alcoholysis分类
能源与动力引用本文复制引用
陈一航,梁轩宇,郝金波,赵浩然,徐桂转..超低酸催化纤维素醇解制备乙酰丙酸乙酯[J].可再生能源,2024,42(5):592-600,9.基金项目
国家自然科学基金项目(U1904122). （U1904122）
