Deep eutectic solvent assists H-β in aldol condensation of acetovanillone and p-hydroxybenzaldehyde to prepare a high density aviation oil precursor

被引：0

作者：

Jian, Yating ^{[2
,3
]}

Li, Xinlong ^{[1
]}

Liu, Yaowei ^{[1
]}

Chen, Xiaoyan ^{[3
]}

Zhang, Yu ^{[3
]}

Baroutian, Saeid ^{[4
]}

Yu, Qiang ^{[1
]}

机构：

[1] South China Agr Univ, Guangdong Engn Technol Res Ctr Agr & Forestry Biom, Minist Agr & Rural Affairs, Inst Biomass Engn,Key Lab Energy Plants Resource &, Guangzhou 510642, Peoples R China

[2] Univ Sci & Technol China, Sch Engn Sci, Hefei 230026, Peoples R China

[3] Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy Guangdong Prov Key La, Guangzhou 510640, Peoples R China

[4] Univ Auckland, Fac Engn, Dept Chem & Mat Engn, Auckland 1010, New Zealand

来源：

FUEL | 2023年 / 347卷

基金：

中国国家自然科学基金;

关键词：

Lignin; Deep eutectic solvent; High density fuel precursor; Aldol condensation; H-beta catalyst; BIOMASS; FUEL; CYCLOPENTANONE; STABILITY; ZEOLITES; CATALYST; LIGNIN; CONVERSION; ALKANES; SYSTEM;

D O I：

10.1016/j.fuel.2023.128491

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

An efficient deep eutectic solvent (DES) catalytic system was developed for the aldol condensation of lignin derivatives acetovanillone (AV) with p-hydroxybenzaldehyde (PHB) to prepare C16 high energy fuel precursors to solve the problems of low coverage of lignin materials, low catalyst selectivity, and compatibility with solvents. With the optimized reaction conditions of a substrate molar ratio of 1:2, 5 g ChCl/Fa (1:6), 15 wt% H-beta, and 100 degrees C for 120 min, the conversion rate of AV reached 88.68%, while the selectivity and yield of C16 reached 78.5% and 69.61%, respectively. The stability of H-beta in DES was found to be better than that in conventional solvents based on SEM, TEM, XRD, and TG analysis. Moreover, NH3-TPD proved that DES could effectively increase the strong acid strength of H-beta, thereby enhancing reactivity. Moreover, DES increased the specific surface area of the H-beta catalyst from 109.59 m(2)/g to 404.118 m(2)/g and had a significant pore-enlarging effect (from 1.529 nm to 2.157 nm), which accelerated the reaction progress. DES was also found to be less toxic to H-beta, enabling it to be regenerated. Furthermore, the shape-selective catalytic mechanism of the DES-assisted H-beta system was demonstrated in the feedstock pool constructed by different lignin-derived platform compounds.

引用

页数：11