为破解秸秆原料醇解制备乙酰丙酸酯的技术瓶颈，本研究将机械力化学催化与生物质醇解有机结合，以安全、高效、节能为目标，研究机械力化学催化秸秆解聚的基础理论及其对醇解合成乙酰丙酸酯的定向调控。通过研究酸辅助球磨工艺及方法，结合先进的显微、分子光谱及色谱分析方法解析秸秆解聚产物的微观结构、化学组成及物理化学特征，探讨酸辅助球磨条件下木质纤维素类生物质大分子的结构演变规律及作用机理；通过利用秸秆解聚产物醇解合成乙酰丙酸酯的研究，阐明解聚工艺及醇解参数对乙酰丙酸酯产物选择性的影响，探讨机械力化学催化秸秆解聚产物高效合成乙酰丙酸酯的新途径，实现秸秆醇解制备乙酰丙酸酯的定向调控。研究工作对于系统掌握酸辅助球磨条件下机械力化学催化秸秆物料解聚的行为特征具有一定的科学意义，对于促进秸秆资源高效定向转化为乙酰丙酸酯类能源化合物具有重要的实际应用价值。

To break the bottleneck in alcoholysis of crop residue into levulinate, we investigate a safe, efficient, and energy-saving biomass pretreatment method—acid-assisted ball-milling which utilize mechanochemistry to catalyze the depolymerization of lignocellulose. The influence of different factors which affects the degradation results including the milling time, acid type, acid concentration, and ratio of grinding media to material will be studied. The physiochemical changes of feedstock during the ball-milling will be characterized to reveal the depolymerization performance of crop residue under mechanochemical catalysis. The ball-milled product will be alcoholyzed to synthesize the levulinate with monohydric alcohol. The synthesis process will be optimized to maximize the levulinate yields and selectivity by regulating the ball-milling parameters and alcoholysis reaction conditions. To better understand the reaction mechanism, the reaction kinetics will be investigated at macro and micro levels. The mechanism study has a certain scientific significance and the process optimization has important practical value for the promotion of efficient directional conversion of crop residue to levulinates.