设计环境友好和可持续的生物质转化过程是缓解能源危机的有效途径之一，其中，制备高效稳定的固体酸催化剂并探究其催化的生物质转化过程的机理是其关键科学问题。本项目拟采用一步共缩合路径，通过调控制备条件，分别制备磺酸官能化有机硅中空纳米球、纳米管和有序纳米孔杂化材料，探究其形貌形成机理；利用此类材料优异的形貌特征和孔隙率特性以及可调控的Brønsted酸性和表面亲疏水性，进一步提高磺酸功能化硅基材料的酸催化活性，并实现在原子经济下完成以生物平台分子（甘油、乙酰丙酸和呋喃醇类化合物）为原料合成化石柴油添加剂的酯化、醇解和醚化等反应；通过对以上催化过程的研究，揭示杂化纳米催化剂的形貌对其活性的影响规律，阐明影响催化剂选择性的因素，揭示反应机理，评价杂化催化剂的稳定性。本研究将催化化学、绿色化学和纳米科学相互融合，可望为设计高活性、高选择性和高稳定性的应用于生物质转化过程的固体酸催化剂提供新思路和依据。

It is one of the effective ways to ease the energy crisis by designing environmental friendly and sustainable biomass conversion processes, and preparation of effective and stable solid acid catalysts as well as studies on the mechanism of the solid acid-catalyzed biomass conversion processes are the key scientific problems. In this program, one step cocondensation strategy will be designed to construct sulfonic acid functionalized organosilica hybrid materials with hollow nanospherical, nanotubular and ordered nanoporous morphologies by fine tuning preparation conditions; meanwhile, the formation mechanism of as-prepared materials with various morphologies will be studied. It is expected that the catalytic activity of sulfonic acid functionalized silica materials can be further improved by combination of unique morphology and porosity properties, tunable Brønste acid properties and surface hydrophilcity/hydrophobicity of as-prepared nanohybrid catalysts; additionally, synthesis of fuel additives from biomass-derived platform molecules (e.g. glycerol, levulinic acid and furanyl alcohols) by esterification, ethanolysis and etherification can be performed from the point of atom economy. By studying the above catalytic processes, influence of morphologies of the nanohybrid catalysts on their heterogeneous acid catalytic activity will be found, factors affected the selectivity of the nanohybrid catalysts will be elucidated, the mechanism will be revealed, and the reusability of the catalysts can be evaluated. The program will combine catalysis with green chemistry and nanoscience, and it is expected to provide new idea and foundation to design hybrid solid acid catalysts for biomass conversion processes with high activity, selectivity and stability.