Simultaneous Oxidative Cleavage of Lignin and Reduction of Furfural via Efficient Electrocatalysis by P‐Doped CoMoO 4

作者：Yi Qi, Bowen Liu, Xueqing Qiu, Xuezhi Zeng, Zhicheng Luo, Weidong Wu, Yingchun Liu, Liheng Chen, Xihong Zu, Huafeng Dong, Xuliang Lin, Yanlin Qin · 发表于：Advanced Materials · 年份：2023 · DOI：10.1002/adma.202208284 · 被引用次数：124 · 研究领域：Lignin and Wood Chemistry、Biochemical and biochemical processes、Oxidative Organic Chemistry Reactions

Abstract Electrochemical oxidative lignin cleavage and coupled 2‐furaldehyde reduction provide a promising approach for producing high‐value added products. However, developing efficient bifunctional electrocatalysts with noble‐metal‐like activity still remains a challenge. Here, an efficient electrochemical strategy is reported for the selective oxidative cleavage of C α –C β bonds in lignin into aromatic monomers by tailoring the electronic structure through P‐doped CoMoO 4 spinels (99% conversion, highest monomer selectivity of 56%). Additionally, the conversion and selectivity of 2‐furaldehyde reduction to 2‐methyl furan reach 87% and 73%, respectively. In situ Fourier transform infrared and density functional theory analysis reveal that an upward shift of the E d upon P‐doping leads to an increase in the antibonding level, which facilitates the C α –C β adsorption of the lignin model compounds, thereby enhancing the bifunctional electrocatalytic activity of the active site. This work explores the potential of a spinel as a bifunctional electrocatalyst for the oxidative cracking of lignin and the reductive conversion of small organic molecules to high‐value added chemicals via P‐anion modulation.