【摘要】 生物质衍生的乙酰丙酸（LA）通过加氢反应可以生成高附加值的γ-戊内酯。然而，LA是一种有机酸，能够使催化剂中的金属组分析出。金属析出会导致催化剂不可逆失活，还会污染产物。为了抑制金属析出，研究者从催化剂外部环境和催化剂自身着手，积极寻求解决方案。基于对已有研究结果的系统梳理与分析，文章首先概述了LA加氢反应中的催化剂金属析出问题，然后阐释了金属析出的作用机理和影响因素，最后详细归纳总结了现有的解决金属析出问题的方法，并对其发展前景做了展望。更多还原

【Abstract】 Levulinic acid(LA), which is accessible from renewable lignocellulosic biomass, can be transformed to value-added gamma-valerolactone. However, LA as an organic acid causes severe metal leaching from heterogeneous catalysts. Metal leaching not only leads to irreversible deactivation of the catalysts, but also contaminates reaction products. Various endeavors for preventing metal leaching focused either on the external factors of the catalysts, or on the internal factors of the catalysts. On the basis of extensive literature research, the problem of metal leaching in the reaction of LA hydrogenation was firstly stated, and then the mechanism and influencing factors of metal leaching from the catalysts were expounded. Finally, the overall advances in developing various techniques to solve the metal leaching problems were extensively summarized,and the development prospect of the methods was prospected.更多还原