Catalytic cascade acetylation-alkylation of biofuran to C_(17)diesel precursor enabled by a budget acid-switchable catalyst

作     者：Chuanhui Li Yuanzhong Li Xiaoxiang Luo Zhengyi Li Heng Zhang Hu Li Song Yang Chuanhui Li;Yuanzhong Li;Xiaoxiang Luo;Zhengyi Li;Heng Zhang;Hu Li;Song Yang

作者机构：State Key Laboratory Breeding Base of Green Pesticide&Agricultural BioengineeringKey Laboratory of Green Pesticide&Agricultural BioengineeringMinistry of EducationState-Local Joint Laboratory for Comprehensive Utilization of BiomassCenter for R&D of Fine ChemicalsGuizhou UniversityGuiyang 550025China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第6期

页      面：171-179页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financial support from the National Natural Science Foundation of China(21666008,21908033,21576059) Fok Ying-Tong Education Foundation(161030) Guizhou Science&Technology Foundation(1037) Program of Introducing Talents of Discipline to Universities of China(111 Program,D20023) 

主　　题：Biomass Diesel Catalysis Biofuranic compound Acetylation-alkylation 

摘      要：Lignocellulosic biomass is a promising feedstock for the synthesis of value-added chemicals and ***,one of the biggest challenges for producing high-quality diesel fuels is the lack of sufficient carbon-chain length in biomass *** this study,a C_(17)diesel precursor 1,1,1-tris(5-methyl-2-f uryl)ethane(TEMF)with a yield of ca.70%was synthesized from the cascade acetylation-hydroxyalkyla tion/alkylation of bio-based 2-methylfuran(MF)with acetic anhydride(AA)catalyzed by acid-treated montmorillonite with enhanced acidity and improved *** catalytic mechanism of the cascade reaction process was investigated over different types of acid species(Br?nsted acid and Lewis acid),and the influence of in situ formed acetic acid was also examined.A synergistic effect was observed to enable the synthesis of TEMF from the trimerization of MF with AA,in which Lewis acid and weak Br?nsted acid species mainly catalyze the acetylation and hydroxyalkylation processes,while the subsequent alkylation step is mainly catalyzed by strong Br?nsted acid.