纤维素催化转化制乙二醇

化石能源的巨大消耗和由此所带来的环境和气候问题，促使当今世界的能源结构正从单一的化石能源向包括可再生能源、核能在内的多元化能源结构转变。
　　Declining fossil fuel reserves and the global climate change associated with the consumption of fossil fuel havetriggered intensive interest in developing renewable energy sources.
　　作为可再生资源重要组成部分的生物质资源，实现其清洁高效地转化为能源化学品已经成为许多国家的重要发展战略。
　　Biomass is the only renewable organic carbonsource in nature, which endows it with unique advantages in producing various industrially important chemicals.
　　木质纤维素是地球上最丰富的生物质资源，以木质纤维素为原料制备液体燃料和化学品，对于补充我国化石资源短缺、减轻环境污染压力、实现经济可持续发展具有重大意义。
　　Cellulose is the most abundant biomass on earth, and the rich hydroxyl groups in the molecules make it an idealfeedstock for the production of polyols.
　　催化是实现木质纤维素高效高选择性转化的重要途径。
　　However, the intra- and inter-molecular hydrogen bonding network protectsthe glycosidic bonds from attack by most solvents or catalysts, and the degradation of cellulose under milderconditions has therefore become a challenging task.
　　本报告将针对木质纤维素催化转化制取燃油和化学品所面临的机遇和挑战，主要以纤维素转化为大宗化学品乙二醇为例，阐述新反应过程的开发、多功能催化材料的设计、催化剂的原位表征以及反应机理和反应动力学的微观描述，以期为未来的生物炼制技术提供新的方法和思路。
　　In this presentation, we show that under the catalysis ofmulti-functional tungsten-based catalysts, cellulose could be transformed into ethylene glycol with a highconversion and selectivity. The performances of various catalyst formulations containing tungsten compounds werediscussed, and the reaction mechanism was proposed based on the characterizations of the catalysts and the reactionkinetics.