由木质素制备高品位运输燃料初探

Preliminary study on Preparation of High-Quality Transportation Fuels from Lignin

木质素是一种绿色可再生的资源,是制备液体运输燃料的理想原料。本文研究了一种由木质素制备液体运输燃料的方法。首先,选用K-OMS-2催化剂进行氧化反应,通过氧化木质素单体模型物获得芳香醛,木质素二聚体模型物(α-O-4结构木质素二聚体)氧化解聚后获得了65%产率的芳香醛;同时尝试氧化碱木素,产物中检测到香草醛、对羟基苯甲醛等化合物;其次,通过芳香醛和丙酮发生Claisen-Schmidt缩合反应增加碳链长度;最后,通过芳烃加氢获得高品位的饱和烷烃燃料。

Lignin as an abundant natural renewable resource is the ideal feedstock for the production of liquid transportation fuels.In this work a method for the production of liquid transportation fuels from lignin was studied.First,lignin monomer model was oxidized to obtain aromatic aldehyde under the catalysis of K-OMS-2.The lignin dimer model（α-O-4 structure lignin dimer） was oxidized and depolymerized to obtain the aromatic aldehyde in 65%yield.Meanwhile,by oxidizing alkali lignin,vanillin,p-hydroxybenzaldehyde and other aromatic aldehyde compounds can be detected from the product.Then,the length of the carbon chain was increased by Claisen-Schmidt condensation reaction of aromatic aldehydes and acetone.Finally,high-grade saturated alkane fuel was obtained by hydrogenation of aromatic hydrocarbons.