半纤维素
氢解
纤维素
化学
环戊酮
有机化学
脱碳
羟醛缩合
呋喃
己二酸
加氢脱氧
木质素
单体
催化作用
高分子化学
聚合物
选择性
作者
Zhenjie Yu,Guangyi Li,Fang Lu,Xiaoqin Si,Aiqin Wang,Xiaodong Wang,Cong Ye,Tao Zhang,Ning Li
出处
期刊:Chem catalysis
[Elsevier]
日期:2022-03-01
卷期号:2 (3): 595-609
被引量:8
标识
DOI:10.1016/j.checat.2022.01.015
摘要
The substitution of fossil energy with biomass as the feedstock for polymer production has drawn tremendous attention. Here, we describe a process for the synthesis of nylon monomers (3-methylglutaric acid [MGA], glutaric acid [GA], dimethyl adipate [DMAP], and dimethyl methyladipate [DMMAP]) with poplar wood. This process involves the selective hydrogenolysis of cellulose and hemicellulose into 2,5-hexanedione (HD) and cyclopentanone (CPO) in an acid-free system, the cascade intramolecular aldol condensation/hydrogenation of HD to 3-methylcyclopentanone (MCPO), and the catalytic oxidation of MCPO and CPO to GA and MGA (or a condensation/ring-opening reaction of MCPO and CPO to DMAP and DMMAP). Experiments reveal that the presence of Cl− ions restrains the decarbonylation and the furan-ring hydrogenation over the Pd/C catalyst, which leads to high selectivity of HD and CPO in the hydrogenolysis process. This work offers a new method for the direct conversion of raw biomass without the separation of cellulose, hemicellulose, and lignin.
科研通智能强力驱动
Strongly Powered by AbleSci AI