文献类型：期刊文献

英文题名：Cascade of Acid Sites and Oxygen Vacancy in Mo/Ga@ZSM-11 for Efficient Cracking of Lignin to Produce Alkylphenol

作者：Shi, Jingjing[1] Lu, Yanju[2] Xia, Haihong[1] Xu, Junming[1,2] Jiang, Jianchun[1,2]

第一作者：Shi, Jingjing

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Natl Engn Lab Biomass Chem Utilizat, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat, Forest Resources Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China

年份：2025

卷号：363

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20244717403987);Scopus(收录号：2-s2.0-85209550949);WOS:【SCI-EXPANDED(收录号:WOS:001415283000001)】；

基金：Authors are grateful for the financial support from the National Key R & D Program of China (No. 2022YFB4201803) .

语种：英文

外文关键词：Lignin; Continuous directional cracking; Acid site regulation; Alkylphenol

摘要：The continuous directional cleavage of lignin provides a sustainable pathway for the synthesis of high-value alkylphenol chemicals. Herein, a multifunctional Mo/Ga@ZSM-11 catalyst and self-supplying hydrogen system were developed, 92.31 % of liquid products yield and 73.52 % of alkylphenol selectivity were achieved, and a good cyclic stability was maintained. Characterization results proved that Ga doped in the lattice gap of ZSM-11, lattice distortion and charge redistribution process generated more Si-O(H)-Ga sites and oxygen vacancies (O-V), which provided ideal anchoring sites for active Mo species through covalent bond formation and strong metal-carrier interaction. The retention of terminal oxygen species MoO(H) and the emergence of electron rich Mo species were accompanied by the derivation of abundant Br & oslash;nsted/Lewis acid sites (BAS/LAS) and O-V. A series of model compound experiments and kinetic analysis proved that BAS promoted the activation of self-supplying hydrogen system and the rapid fracture of aliphatic C-O/C-C bonds under heat drive, while the presence of strong LAS and O-V ensured the further fracture of side chain methyl group (C-Ar-OCH3) in phenolic intermediates. The design concept of multifunctional catalyst provides guidance for the continuous directional cracking of lignin to produce high-value chemicals.