木质素化学催化解聚研究新进展

发布时间：2018-11-05 07:42

【摘要】：木质素作为木质纤维素三大组分之一,是自然界中芳香环含量最多的天然高分子聚合物。基于化学催化手段将其定向转化为化学品及材料,实现木质素高值转化及利用,替代不可再生的化石资源,已经成为国内外重大热门研究领域之一。为此,笔者对木质素化学催化降解转化方面的研究成果进行了综述,并对未来的研究方向进行了展望。基于不同催化反应机理,总结了催化还原和氧化降解体系,阐述了不同体系中使用的还原剂、氧化剂,对不同体系的反应机理及生成产物进行了阐述;同时,介绍了木质素化学降解常用的溶剂(水、有机溶剂、离子液体)和催化剂(液体酸、碱、固体酸、复合型催化剂)。总结认为,目前开发催化效率高、选择性好及低成本催化体系仍然是木质素定向催化转化研究的重点发展方向。
[Abstract]:As one of the three major components of lignocellulose, lignin is the natural polymer with the most aromatic ring in nature. It has become one of the most popular research fields at home and abroad to convert it into chemicals and materials by chemical catalysis, to realize the conversion and utilization of lignin with high value and to replace the non-renewable fossil resources. In this paper, the research results of lignin chemical catalytic degradation and transformation were reviewed, and the future research directions were prospected. Based on different catalytic reaction mechanisms, the catalytic reduction and oxidation degradation systems were summarized, and the reductant and oxidant used in different systems were described. At the same time, the solvent (water, organic solvent, ionic liquid) and catalyst (liquid acid, alkali, solid acid, complex catalyst) for lignin chemical degradation were introduced. It is concluded that the development of catalytic system with high catalytic efficiency, good selectivity and low cost is still the key research direction of lignin oriented catalytic transformation.
【作者单位】：北京林业大学材料科学与技术学院;
【基金】：国家杰出青年科学基金(31225005) 国家自然科学基金(31470606)
【分类号】：O636.2;O643.3

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