Single-step conversion of lignin monomers to phenol: Bridging the gap between lignin and high-value chemicals

作     者：Jiaguang Zhang Loris Lombardo Gokalp Gozaydin Paul J.Dyson Ning Yan 张佳光;Loris Lombardo;Gokalp Gozaydin;Paul J.Dyson;颜宁

作者机构：Department of Chemical and Biomolecular EngineeringNational University of Singapore117585 Singapore School of ChemistryUniversity of LincolnJoseph Banks LaboratoriesGreen LaneLincolnLN6 7DLUnited Kingdom Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de Lausanne （EPFL） CH‐1015Switzerland 

基　　金：新加坡教育部资助项目(R-279-000-479-112 R-279-000-462-112) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2018年第39卷第9期

页      码：1445-1452页

摘      要：Transformation of lignin into high-value chemicals is hampered by the complexity of monomers obtained from lignin depolymerization. Here we report a strategy, composed of hy-dro-demethoxylation and de-alkylation reactions, that is able to chemically converge various lig-nin-derived phenolic monomers into phenol in a single-step. Using 2-methoxy-4-propylphenol as a model compound, Pt/C exhibited the best performance in hydro-demethoxylation reaction afford-ing 80% 4-propylphenol from 2-methoxy-4-propylphenol, while H-ZSM-5 was identified as the most suitable catalyst for de-alkylation, achieving 83% yield of phenol from 4-propylphenol. Since the two catalysts operate under compatible conditions, combining the two catalysts to simultane-ously promote both hydro-demethoxylation and de-alkylation reactions was achieved. Configura-tion of how to organize the catalysts is a critical parameter, where the physical mixture of the two was most effective, providing over 60% phenol from 2-methoxy-4-propylphenol in a single-step.

主 题 词：Lignin Phenol Zeolite De‐alkylation Hydro‐demethoxylation 

学科分类：081702[081702] 0817[工学-轻工类] 08[工学] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(18)63132-8

馆 藏 号：203300619...