%0 Journal Article
%T 木质素化学催化解聚研究新进展
%A 张学铭
%A 吴苗
%A 许凤
%J 林业工程学报
%D 2017
%R 10.13360/j.issn.2096-1359.2017.04.001
%X 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。</br>Lignin is one of the three main components of lignocellulose and the most abundant natural aromatic polymer on the earth. Potentially lignin can be converted into high-value aromatic chemicals to replace the nonrenewable fossil resources by catalytical degradation. This research area has become one of the hottest topics in the related field. In this review, recent developments regarding the catalytical degradation of lignin are summarized. The types of reducing agents, oxidizing agents used in the catalytic reduction and oxidation reaction of lignin were discussed based on the mechanisms of catalytical reaction. The mechanism and aromatic products of these reaction systems were also summarized. Moreover, common solvents and catalysts used in lignin chemical degradation were discussed in detail. Finally, future outlook regarding the conversion of lignin into high-value chemicals were discussed. The development and synthesis of highly efficient and selective as well as cost efficient catalysts are the key points to break the bottleneck of this research field
%K 木质素
%K 降解
%K 催化剂
%K 还原
%K 氧化&lt
%K /br&gt
%K lignin
%K degradation
%K catalyst
%K reduction
%K oxidation
%U http://lkkf.njfu.edu.cn//oa/darticle.aspx?type=view&id=201704001