中文摘要：

生物质是唯一可替代化石资源获取液态燃料和化学品的可再生资源,近年来由生物质转化合成乙酰丙酸酯引起了研究者们越来越广泛的关注。乙酰丙酸酯是一类重要的化学中间体和新能源化学品,具有高的反应特性和广泛的工业应用价值。目前开发的从生物质资源出发转化合成乙酰丙酸酯的潜在合成途径可概括为4种：直接酸催化醇解法、经乙酰丙酸酯化、经5-氯甲基糠醛醇解和经糠醇醇解。本文分别介绍了这4种转化合成途径的化学反应过程及最新研究进展,从反应合成工艺、催化体系、经济可行性等方面评述了各自的特点与发展趋势,并分析了目前工业规模转化生物质合成乙酰丙酸酯仍面临的一些科学难点。最后,对今后该领域的研究前景进行了展望。

英文摘要：

Biomass is the only renewable resources on the earth that can derive liquid fuel and fine chemicals to replace the petroleum-based chemicals.In recent years,the development of bioenergy concerning the synthesis of levulinate esters from biomass via chemical/catalytic process has attracted more and more concerns,and extensive research is being carried out worldwide.Levulinate esters,like methyl levulinate,ethyl levulinate,and butyl levulinate,are a kind of important intermediates and energy chemicals having high reactivity and widespread application in many fields.Up to now,there are four developed potential pathways for the synthesis of levulinate esters from biomass conversion,including the direct acid-catalyzed alcoholysis of biomass,the esterification of levulinic acid that from hydrolysis of biomass,the alcoholysis of 5-（chloromethyl）furfural derived from biomass,and the alcoholysis of furfuryl alcohol that from hydrogenation of furfural.In this review,the chemical reaction process and recent research progress for the above four pathways are introduced.The characteristic and development tendency of these pathways are reviewed from the production process,catalytic system and economic feasibility.Based on the present research situation,the technology and engineering barriers for the conversion of biomass to levulinate esters in commercial scales are analyzed and discussed,and the future research trend in the field is prospected.