Selective photocatalytic aerobic oxidative cleavage of lignin C–O bonds over sodium lignosulfonate modified Fe_(3)O_(4)/TiO_(2)

作     者：Kejia Wu Jinrong Liang Sijie Liu Yimin Huang Minglong Cao Qiang Zeng Xuehui Li Kejia Wu;Jinrong Liang;Sijie Liu;Yimin Huang;Minglong Cao;Qiang Zeng;Xuehui Li

作者机构：School of Chemistry and Chemical EngineeringState Key Laboratory of Pulp&Paper EngineeringGuangdong Provincial Key Lab of Green Chemical Product TechnologySouth China University of TechnologyGuangzhou 510640GuangdongChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2023年第84卷第9期

页      面：89-100页

核心收录：

学科分类：080703[工学-动力机械及工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0822[工学-轻工技术与工程] 

基　　金：the financial support of the Natural Science Foundation of China (21736003, 22178130 and 22005106) the Natural Science Foundation of Guangdong Province, China (2020A0505100008) the Science and Technology Program of Guangzhou (202206010024) 

主　　题：Lignin Photocatalytic oxidation Selective cleavage Titanium dioxide 

摘      要：Lignocellulose shows significantly potential in sustainable conversion to high-quality fuel and valueadded chemicals with the demands for realizing the rapid cycle of carbon resources and helping to reach carbon neutrality in *** tailoring of α-O-4,β-O-4,*** in lignin has always been viewed as death blow for its ***,novel sodium lignosulfonate(SL) modified Fe_(3)O_(4)/TiO_(2)(SL-Fe_(3)O_(4)/TiO_(2)) spherical particles have been developed and used as catalysts for selectively photocatalytic oxidative cleavage of organosolv *** expected,80% selective conversion of lignin in C2-C4 esters has been achieved,while C-O bonds in lignin model compounds can be effectively *** than normal hydroxyl radical-mediated photocatalytic depolymerization of lignin over TiO_(2)-based materials,in this contribution,mechanism studies indicate that photogenerated holes and superoxide anion radicals are main active species,which trigger the cleavage of α/β-O-4 bond,and the isotopelabeling study confirms the crucial factor of C_β-H dehydrogenation in cleavage of β-O-4 bonds.