木质纤维素水热环境下水解过程的基础研究

项目名称： 木质纤维素水热环境下水解过程的基础研究

项目编号： No.21476233

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 有机化学

项目作者： 袁振宏

作者单位： 中国科学院广州能源研究所

项目金额： 86万元

中文摘要： 木质纤维素类生物质各组分全利用，是解决纤维素乙醇、生物汽油等生物炼制工艺高成本问题的有效途径。本项目提出以水热法构建糖平台、综合木质素高值化转化制备烃类燃料的原料全利用方法。针对水热环境中生物质水解基础问题，拟根据生物质本身固有组分、结构及金属离子含量及分布特点，关联水热环境下水的介电常数、离子积、粘度、密度等物性参数，采取从模化物到真实体系的研究路线，借助自行设计的反应系统和多种先进分析仪器，通过建立动力学模型、反应参数系统优化及传热传质过程研究等，以从宏观到微观、从试验到理论研究方法，追踪反应历程，探求生物质水热环境中各组分耦合水解机制。并通过建立水热处理与后续纤维素酶水解耦合模型，研究水热环境中以酸-金属固体酸催化剂作用下木质素催化加氢脱氧制备烃类燃料过程，为水热技术在生物质水解及原料全利用过程提供理论参考。

中文关键词： 木质纤维素；水热过程；水解；机理

英文摘要： It is a promising way to solve the high cost of bio-refinery products such as cellulosic ethanol, bio-diesel, etc. through making full use of all components in the lignocellulosic biomass. This project will take full advantage of lignocellulosic biomass through producing sugars with hydrothermal process, and converting lignin into high-value hydrocarbon fuels. Based on the composition and structure of lignocellulose, the contents and distribution of metal ions in lignocellulose, and the hydrothermal physical property parameters like dielectric constant, ion product, viscosity, density, and so on, it will research the basic problems encountered in the hydrothermal hydrolysis of linocellulose with the model materials and the real lignocellulosic materials. It will adopt the self-designed reactors and many advanced analytical instruments. Through establishing a dynamical model, optimizing parameters, investigating heat and mass transfer, and so on, a reacting route will be tracked to study the coupling hydrolysis of components in lignocelluloses from the macroscopic to microscopic scale, and from experiments to theory. Through further construction of the coupling hydrolytic model of hydrothermal and subsequent enzymatic hydrolysis, it will study the catalytic hydrodeoxygenation to make hydrocarbon fuels with the acid-metal solid acid catalyst. This project will provide a theory reference for the hydrolysis of lignocellulosic biomass and the full use of the raw material with the hydrothermal process.

英文关键词： lignocellulose;hydrothermal process;hydrolysis;mechanism