文献类型：期刊文献

英文题名：Self-Hydrogen Supplied Catalytic Fractionation of Raw Biomass into Lignin-Derived Phenolic Monomers and Cellulose-Rich Pulps

作者：Zhou, Hao[1,2];Liu, Xiaohui[1,2];Guo, Yong[1,2];Wang, Yanqin[1,2]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn,Feringa Nobel Prize Scientist, Joint Int Res Lab Precis Chem & Mol Engn Shanghai, Shanghai 200237, Peoples R China

年份：2023

卷号：3

期号：7

起止页码：1911

外文期刊名：JACS AU

收录：WOS:【ESCI(收录号:WOS:001018063100001)】；

基金：The authors acknowledge financial support from the National Key Research and Development Program of China (2022YFA1504903) and the National Natural Science Foundation of China (21832002 and 22102056).

语种：英文

外文关键词：heterogeneous catalysis; biomass fractionation; self-hydrogen supplied; lignin depolymerization; cellulose-rich pulps

摘要：Lignocellulosic biomass is one of the most well-studiedand promisinggreen carbon sources. The fullest utilization of lignocellulosic biomassin hydrogen-free and mild conditions to produce phenolic monomerswhile preserving cellulose-rich pulps is challenging and has far-reachingsignificance. Here, we report an innovative strategy to convert lignocellulosicbiomass into lignin oils and cellulose-rich pulps without exogenoushydrogen under mild conditions over a Pt/NiAl2O4 catalyst. In this process, the structural hydrogens in hemicelluloseacted as a hydrogen source to realize the fractionation and depolymerizationof lignin into phenolic monomers while keeping the cellulose intact,which is named self-hydrogen supplied catalytic fractionation (SCF).By using water as a solvent, the theoretical yield of phenolic monomers(46.6 wt %, with propyl(ethyl) end-chained syringol and guaiacol asmain products) is achieved at 140 & DEG;C for 24 h, with 90% celluloseintact in birch sawdust. This H-2-free process can be extendedto other biomass (hardwood, softwood, and grass) and can be scaledup. The Pt/NiAl2O4 catalyst also shows goodstability in recycling as well as regeneration treatment. This workprovides a new strategy to achieve high utilization of lignocellulosicbiomass for sustainable biorefinery by using water as a solvent withoutexogenous hydrogen under mild conditions.