燃料化学学报（中英文）2026，Vol.54Issue(3)：58-70,13.DOI:10.1016/S1872-5813(25)60581-0
柠檬酸改性HUSY分子筛催化木质素衍生酚类与环己醇烷基化研究
The study on citric acid-modified HUSY catalyzed alkylation of phenol with cyclohexanol
摘要
Abstract
Lignin-derived oxygenated aromatics,particularly phenols and aromatic ethers obtained through depolymerization,represent promising feedstocks for synthesizing high-density and high-heat-sink aviation fuels via alkylation-hydrogenation processes.This study systematically evaluates the catalytic performance of various zeolites(Hβ,HZSM-5,MCM-41 and HUSY)in the alkylation reaction of phenol with cyclohexanol.Characterization results demonstrate that HUSY zeolite showed superior catalytic activity compared to other zeolites,attributable to its favorable pore architecture and well-balanced acid site distribution that synergistically facilitate molecular diffusion and catalytic transformations.To further enhance the catalytic properties,HUSY zeolite was modified with citric acid at various concentrations and compared with those treated with NaOH and oxalic acid.The results revealed that citric acid treatment preserved the crystallinity of the zeolite while modulating its acid distribution and pore structure.All modified zeolites enhanced phenol alkylation activity.Notably,the HUSY-0.5M catalyst,which exhibited the highest medium-strong acid to total acid ratio,achieved superior catalytic performance,80.4％conversion of phenol and 99.6％selectivity for alkylation products.The catalyst also exhibited high activity in the alkylation of various lignin-derived compounds,demonstrating its broad applicability.This work provides a new strategy for the valorization of lignin-derived phenols into high-value fuel precursors through alkylation.关键词
柠檬酸/HUSY/酚类烷基化/航空燃料Key words
citric acid modification/HUSY/phenolic alkylation/aviation fuel分类
能源科技引用本文复制引用
华灿豪,吴靖风,朱玲君,许光文,王树荣..柠檬酸改性HUSY分子筛催化木质素衍生酚类与环己醇烷基化研究[J].燃料化学学报（中英文）,2026,54(3):58-70,13.基金项目
Supported by National Key Research & Development Program of China(2022YFB4201800)and Key Program of National Natural Science Foundation of China(52130610). （2022YFB4201800）
