半三明治型过渡金属络合物催化生物质糖类衍生物的水相氢化反应

生物质的化学催化转化对于能源和化学工业的可持续发展具有重要意义。以亲水性的糖类衍生物为原料的生物质转化所面临的挑战主要是高效、高选择性地脱除含氧官能团，而氢化反应是一类最为经济地降低氧含量和去除官能团的方法。本项目针对生物质原料分子结构的特殊性，拟发展一系列水溶性半三明治型过渡金属催化剂。通过研究催化剂的中心金属、配体和外界离子等影响因素，调控催化剂对糖类衍生物的氢化还原能力以及对不同含氧官能团的氢化选择性；并通过氢源、氢压、温度、溶液体系pH值、添加剂等反应条件的改变，调控氢化反应路径以及控制多步反应的串联。实现生物质基糖类衍生物在温和条件下，高效、定向地氢化转化为各种化学品、溶剂和燃料添加剂。本项目的特色是，水溶性半三明治型过渡金属催化剂可通过简单的萃取相分离手段实现循环利用，并可与上游生物质水解步骤相兼容。

The chemical conversion of biomass resource is of great significance to the energy and chemical industry. For the conversion of biomass-derived hydrophily saccharide derivates, the main challenge is to achieve highly effective and selective removal of oxygen-containing functional groups, while the hydrogenation reaction is one class of the most cost-effective method to reduce the oxygen content and remove functional groups. In this project a series of water-soluble semi-sandwich typed transitional metal based catalyst will be developed aiming at the specialty of the molecular structure of biomass resources. Through the investigation of the factors such as the center metal atom, ligands and outer ions, the control of the activity of hydrogenation for saccharide derivates and the selectivity towards various oxygen-containing groups will be achieved. Moreover, the control of the reaction route of hydrogenation reaction and the serial connection of multi-step reactions can be achieved via the control of reaction conditions such as hydrogen source, pressure, temperature, pH value and additives. The feature of the project is that the water-soluble semi-sandwich typed transition metal based catalyst can be recovered and reused by simple extraction method, and the catalyst system is compatible to the upstream hydrolysis process.