Robust Carbon-Carbon Cleavage in Lignin to Produce Phenol and Cyclohexanone  

作　　者：WANG Lulin CHENG Xiaomeng DONG Minghua LUAN Sen WU Yuxuan HAN Buxing LIU Huizhen 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Laboratory of Colloid and Interface and Thermodynamics,CAS Research/Education Center for Excellence in Molecular Sciences,Center for Carbon Neutral Chemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,P.R.China [2]University of Chinese Academy of Sciences,Beijing 100049,P.R.China

出　　处：《Chemical Research in Chinese Universities》2024年第1期29-35,共7页高等学校化学研究（英文版）

基　　金：the National Natural Science Foundation of China(Nos.22293012,22121002,22179132)。

摘　　要：The challenge of breaking 5-5'bonds in lignin,attributed to their high bonding energy,has prompted the development of a new transformation pathway.Biphenyl,an important model compound for lignin,contains these 5-5'bonds,making it crucial to devise a strategy for their cleavage in lignin transformation.This study introduces a novel method for transforming biphenyl,involving selective hydrogenation to cyclohexylbenzene by Ni/SiO2 catalyst,followed by its oxidation to phenol and cyclohexanone through a radical mechanism.Results demonstrate that the catalysts with small particles have strong catalytic activity,while there is little difference in selectivity.The reason for the high selectivity of cyclohexylbenzene is due to the limited adsorption of cyclohexylbenzene on Ni/SiO2.This work presents a fresh approach to breaking resilient C-C bonds in lignin.

关 键 词：LIGNIN 5-5'Bond Ni/SiO_(2) PHENOL 

分 类 号：O64[理学—物理化学]