生物质基碳水化合物催化转化为乳酸及其衍生化学品是当前研究的热点。但受非均相催化剂表面扩散及吸附限制，碳水化合物难以与活性中心高效接触，且分子内C-C键断键位置极易受催化条件影响，副反应多，导致碳水化合物催化转化过程面临传质效率低、选择性差等难题。基于胺与活性羰基缩合生成席夫碱的反应机制，本项目提出构建氨基功能化介孔聚合离子液体催化体系，通过氨基键合策略及催化剂亲/疏水效应强化传质，利用金属阴离子交换或氨基螯合作用整合金属活性中心，促进金属活性位点与化学吸附态反应物的高效接触，将特异性化学吸附及金属中心的催化作用结合起来，构建仿酶型催化作用体系，以实现碳水化合物的高效转化。本课题尝试提出了吸附态葡萄糖分子直接发生C3-C4键断键生成三碳糖的反应机理，并拟采用原位光谱学及同位素标记核磁共振等技术揭示糖分子特异性吸附及C-C键选择性断键机制，为设计开发生物质转化的高效催化剂提供新的思路和方案。

Catalytic conversion of carbohydrates derived from biomass to lactic acid and its derivatives is a hot point of recent researching. Limited by the surface diffusion and adsorption, carbohydrates can hardly contact efficiently with catalysts’ active sites. Moreover, the intramolecular C-C bond cleavage is so sensitive to catalysis conditions that side reactions tend to occur. Therefore, the conversion of carbohydrates suffers from low mass transfer efficiency and low selectivity. Based on the condensation mechanism of amine and active carbonyl group to Schiff base, this project is trying to establish amino functionalized mesoporous polymerized ionic liquids catalysed systems. Mass transfer could be enhanced by both amino bonding strategy and the hydrophilic/hydrophobic effect of catalyst. The metal anion exchange or amino chelation methods can be used to integrate metal active centres to facilitate the contact with chemisorbed reactants. In this way, an enzyme-like catalytic system was constructed by integrating the specific chemisorption and the catalysis of metal sites, achieving highly efficient conversion of carbohydrates. The project tentatively proposed a reaction mechanism that the chemisorbed glucose could break into triose sugars directly through C3-C4 bond cleavage. In addition, in-situ spectroscopy and isotope labelling nuclear magnetic resonance technique would be used to reveal the specific chemisorption and the selective intramolecule C-C bond cleavage mechanism of sugars. The current study could serve as a good example for the further design of improved catalysts for biomass conversion.