Free-radical conversion of a lignin model compound catalyzed by Pd/C

被引：28

作者：

Fan, Honglei ^{[1
]}

Yang, Yingying ^{[1
]}

Song, Jinliang ^{[1
]}

Meng, Qinglei ^{[1
]}

Jiang, Tao ^{[1
]}

Yang, Guanying ^{[1
]}

Han, Buxing ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Key Lab Colloid Interface & Chem Thermodynam, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China

来源：

GREEN CHEMISTRY | 2015年 / 17卷 / 08期

基金：

中国国家自然科学基金;

关键词：

BENZYL PHENYL ETHER; C-O BONDS; BIOMASS FRACTIONATION; CLEAVAGE; OXIDATION; HYDRODEOXYGENATION; HYDROGENOLYSIS; PYROLYSIS; LINKAGES; PHENOLS;

D O I：

10.1039/c5gc01272d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Efficient cleavage of a C-O bond in lignin and its model compounds is of great importance for transformation of lignin into fuel and value-added chemicals. In this work, we explored the transformation of a lignin model compound benzyl phenyl ether (BPE) at 150 degrees C by using Pd/C as the catalyst under an argon atmosphere in the presence of Na2CO3 and N-methyl-2-pyrrolidone (NMP). The effects of different reaction parameters such as the amounts of Pd/C, Na2CO3 and NMP as well as reaction times were investigated. It was found that Pd/C played a key role in the conversion of BPE. At the same time, Na2CO3 and NMP also promote the transformation effectively. The yields of phenol and toluene reached 71.6% and 50.4%, respectively. Analytical results of electron paramagnetic resonance (EPR) indicated that the reaction proceeded through a free-radical reaction mechanism. Control experiments indicated that direct pyrolysis of BPE was the main route to generate the target products.

引用

页码：4452 / 4458

页数：7

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