物理化学学报2022，Vol.38Issue(10)：48-56,9.DOI:10.3866/PKU.WHXB202204037
Pt/NbPWO双功能催化剂的制备及氢解碱木质素制备芳香单体
Preparation of a Pt/NbPWO Bifunctional Catalyst for the Hydrogenolysis of Alkali Lignin to Aromatic Monomers
摘要
Abstract
Lignin is a natural aromatic polymer that accounts for nearly 30％of lignocellulose and is considered the only renewable aromatic(re)source for producing aromatic chemicals or liquid fuels via the cleavage of C—O ether bonds and C—C bonds.Thus far,the majority of investigations involving the production of valuable compounds via lignin hydrogenolysis have focused on the cleavage of relatively labile C—O bonds only,which restricts the efficiency of hydrogenolysis.Therefore,in this work,a bifunctional Pt/NbPWO catalyst was synthesized using hydrothermal and wet impregnation methods.It was found that aromatic monomers with a yield of 18.02％could be obtained by breaking the C—O and C—C bonds in alkali lignin.This reaction was applicable to breaking the key C—C bonds when the C—O ether bonds were broken in lignin polymers.The hydrogenolysis mechanism most likely involves the abundant Br?nsted acid and Lewis acid sites on the catalyst that facilitate C—C bond activation.Additionally,the synergy between the support and Pt species in the Pt/NbPWO catalyst was primarily emphasized.关键词
碱木质素/双功能催化剂/Bransted酸和Lewis酸/协同效应Key words
Alkali lignin/Bifunctional catalyst/Brønsted and Lewis acids/Synergistic effects分类
化学化工引用本文复制引用
曹美芳,陈博,阮涛,欧阳新平,邱学青..Pt/NbPWO双功能催化剂的制备及氢解碱木质素制备芳香单体[J].物理化学学报,2022,38(10):48-56,9.基金项目
The project was supported by the National Key Research and Development Program of China(2019YFC1905301) （2019YFC1905301）
National Natural Science Foundation of China(22078115,21776108,21690083,22008078).国家重点研发项目(2019YFC1905301)与国家自然科学基金(22078115,21776108,21690083,22008078)资助 （22078115,21776108,21690083,22008078）
