摘要
催化氧化技术是实现木质素资源化利用的有效途径之一,可将木质素转化为具有高度官能化的芳香醛(对羟基苯甲醛、香草醛、紫丁香醛等)。芳香醛是合成染料、香料及药品的重要中间体,具有较大的工业应用价值。综述了国内外有关木质素在金属催化氧化、有机催化氧化、电化学催化氧化、光催化氧化和离子液体催化氧化方面制备芳香醛的最新研究进展,并对不同催化体系下反应过程机理进行了简要阐述。展望了有关木质素催化氧化增值的研究方向,对不同木质素应研发具有针对性的催化剂,以便有助于实现木质素高值化利用。最后,指出调控金属氧化物的表面氧空位是一种选择性催化木质素制备芳香醛的有效策略。
Catalytic oxidation technique is one of effective ways to realize resource utilization of lignin and can transform lignin into highly functional aromatic aldehydes(p-hydroxybenzaldehyde,vanillin,syringaldehyde,etc).Aromatic aldehydes are important intermediates in the synthetic of dyes,perfumes and pharmaceuticals,and have great industrial application value.The latest research progress of the preparation of aromatic aldehydes from lignin at home and abroad through five aspects:metal catalytic oxidation,organic catalytic oxidation,electrochemical catalytic oxidation,photocatalytic oxidation and ionic liquids catalytic oxidation is reviewed.The reaction mechanisms under different catalytic systems are briefly elaborated.The direction of research of the value-added of lignin catalytic oxidation is prospected and should develop targeted catalysts for different lignins,which is conductive to the high value utilization of lignin.Finally,it is pointed out that regulating the oxygen vacancy on the surface of metal oxides is an effective strategy to selectively catalyze the preparation of aromatic aldehydes from lignin.
作者
周姚红
张晓华
熊万明
ZHOU Yaohong;ZHANG Xiaohua;XIONG Wanming(College of Chemistry and Materials,Jiangxi Agricultural University,Nanchang 330045,Jiangxi,China;Key Laboratory of Chemical Utilization of Plant Resources of Nanchang,College of Chemistry and Materials,Jiangxi Agricultural University,Nanchang 330045,Jiangxi,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2022年第3期442-453,共12页
Fine Chemicals
基金
国家自然科学基金(31760193)
江西省科技厅基金项目(20202BABL205003)
江西省教育厅科研基金项目(GJJ190181,GJJ200462)。
关键词
木质素
催化
氧化
芳香醛
高值化利用
lignin
catalysis
oxidation
aromatic aldehydes
high value-added utilization
