Abstract: Selectively catalytic hydrogenolysis of biomass derived polyols (sorbitol，xylitol and glycerol) to small molecular diols (glycol and 1,2-/1,3-propanediols) has attracted more and more attention due to the wide application of these small molecular diols in fine and organic chemical，biology and pharmaceutical industries. Compared to the multi-stepped transformation of fossil based ethylene and propylene feedstocks，selective hydrogenolysis of biomass derived polyols to small molecular diols shows higher efficiency，simpler processing and more friendly to environment. This review is focused on the catalyst and reaction mechanism of selective hydrogenolysis of glycerol to 1,2-/1,3-propanediols and selective hydrogenolysis of sorbitol and xylitol to small molecular diols. The perspective of efficient catalyst and process for producing small molecular diols by hydrogenolysis of biomass derived polyols is discussed.

Key words: sorbitol, xylitol, glycerol, selective hydrogenolysis, small molecular diols

摘要： 乙二醇、1,2-/1,3-丙二醇等小分子二元醇在精细和有机化工、生物医药等领域应用广泛。与石化路径相比，以可再生的生物质多元醇（丙三醇、山梨醇/木糖醇）为原料选择性催化氢解制取上述小分子二元醇具有过程简单、绿色高效等显著优势，已成为生物质催化转化的研究热点。本文综述了典型生物质多元醇山梨醇/木糖醇和丙三醇选择性催化氢解为乙二醇、1,2-/1,3-丙二醇等小分子二元醇，重点阐述了丙三醇选择性氢解制1,2-丙二醇、1,3-丙二醇和山梨醇/木糖醇选择性氢解制小分子二元醇的催化剂体系和反应机理，并对该领域的发展前景作了展望，提出开发高效稳定的催化剂体系和工艺是未来的研究重点。

关键词: 山梨醇, 木糖醇, 丙三醇, 选择性氢解, 小分子二元醇