新闻通知

通知公告

关于举办华南理工大学“海内外优秀青年学者论坛” 轻工科学与工程学院分论坛的通知

发布时间:2018-11-12 访问次数:362

  华南理工大学“海内外优秀青年学者论坛”旨在面向全球邀请青年才俊,围绕国际科学前沿、热点研究领域以及行业产业的技术问题等展开探讨和交流。籍此平台,启迪思维,开拓视野,促进学术交流与合作,本次论坛的具体安排如下:

  一、论坛时间

  2018年11月15日上午9:00

  二、论坛地点

  制浆造纸工程国家重点实验室306会议室

  三、报告人

  蓝武博士,瑞士洛桑联邦理工大学

  四、报告题目

  木质素的结构表征及其降解生成芳香环单体的研究(Lignin structural characterization and depolymerization intoaromaticmonomers)

  欢迎广大师生参加!

轻工科学与工程学院

制浆造纸工程国家重点实验室

2018年11月12日

  内容摘要:

  Ligninis an abundantaromatic plant cellwallpolymerconsisting of phenylpropanoidunits in which the aromatic rings display variousdegrees of methoxylation. It has long been regarded as waste in biorefinery and pulp and paper industry. However, within the context of depletion of fossil reserves and environmental concerns, lignin valorization attracts significant interest. Understanding the lignin structure plays significant role on lignin application. We recently revealed a new feature of lignin from grass samples. Studies on biomimetic radical coupling, metabolite profiling, and NMR data using tricin, monolignols, and their cross-coupling products as model compounds authenticated that tricin, a member of flavone that valuable for human health, is an important monomer of grass lignin. We also accurately quantified the tricin content in lignin from different plant species for the first time and found that lignins from oat and wheat straw were rich in tricin and could be alternatives source of tricin. On the other hand, we further improved the aldehyde stabilized lignin extraction method and achieved high yield and selectivity (>80% to a signal product) in a following hydrogenolysis or two-step oxidative depolymerization procedures,based on the understanding of lignin structure and lignin reaction mechanism. These methods with high selectivity to a signal product optimized utilization of lignin and facilitate separation in downstream process.

  报告人简介:

  蓝武博士,2005-2012年就读于华南理工大学并获学士与硕士学位,2016年博士毕业于美国威斯康辛大学麦迪逊分校,至今在瑞士洛桑联邦理工大学从事博士后研究。长期从事生物质资源转化利用研究,专注于木质素结构表征、木质素催化降解以及生物质精炼等。具有丰富的木质素模型物合成及结构解析经验,同时在木质素加氢裂解与氧化降解等方面取得了一系列原创性研究成果。主要研究成果包括:首次揭示并证实了麦黄酮在草类木素中通过自由基氧化聚合参与木质化过程,并使用化学降解的方法准确定量了木质素中的麦黄酮含量;使用醛基保护的方法,大幅度提高了木质素加氢降解或氧化降解中的选择性(>90%)和得率(接近理论得率)。近五年在相关国际学术期刊发表论文13篇,主要发表在Angewandte Chemie International Edition (第一作者2篇,其中,1篇封面论文;1篇处于返修阶段), Plant Physiology(第一作者2篇,其中一篇为ESI高被引论文), Plant Journal (第一作者1篇)等本领域顶级期刊,参编木质素英文专著1部,论文他引次数500余次。此外,曾多次参加化学与生物质相关领域国际会议并作口头报告。