Highly dispersed Pd nanoparticles in situ reduced and stabilized by nitrogen-alkali lignin-doped phenolic nanospheres and their application in vanillin hydrodeoxygenation  

作　　者：Xue Gu Yu Qin Jiahui Wei Bing Yuan Fengli Yu Liantao Xin Congxia Xie Shitao Yu 

机构地区：[1]State Key Laboratory Base of Eco-chemical Engineering,College of Chemistry and Molecular Engineering,College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第11期205-216,共12页化学科学与工程前沿（英文版）

基　　金：National Natural Science Foundation of China(Grant Nos.31870554 and 32071710).

摘　　要：Herein,we introduced a nitrogen-alkali lignin-doped phenolic resin(N@AL_(n)PR)to produce palladium nanoparticles through an in situ reduction of palladium in an aqueous phase,without the need for additional reagents or a reducing atmosphere.The phenolic resin nanospheres and the resulting palladium nanoparticles were extensively characterized.Alkali lignin created a highly conducive environment for nitrogen incorporation,dispersion,reduction,and stabilization of palladium,leading to a distinct catalytic performance of palladium nanoparticles in vanillin hydrodeoxygenation.Under specific conditions of 1 mmol of vanillin,40 mg of catalyst,1 MPa H_(2),90°C,and 3 h,the optimized Pd/N@AL_(30)PR catalyst exhibited a nearly complete conversion of vanillin,98.9%selectivity toward p-creosol,and good stability for multiple reuses.Consequently,an environmentally friendly lignin-based catalyst was developed and used for the efficient hydrodeoxygenation conversion of lignin-based platform compounds.

关 键 词：alkali lignin phenolic nanosphere palladium nanoparticles HYDRODEOXYGENATION VANILLIN 

分 类 号：O621.251[理学—有机化学] TB383.1[理学—化学]