Selective catalytic transformation of lignin with guaiacol as the only liquid product

被引：86

作者：

Shen, Xiaojun ^{[1
,2
]}

Meng, Qinglei ^{[1
]}

Mei, Qingqing ^{[1
]}

Liu, Huizhen ^{[1
,2
,3
]}

Yan, Jiang ^{[1
,2
]}

Song, Jinliang ^{[1
]}

Tan, Dongxing ^{[1
,2
]}

Chen, Bingfeng ^{[1
]}

Zhang, Zhanrong ^{[1
]}

Yang, Guanying ^{[1
]}

Han, Buxing ^{[1
,2
,3
,4
]}

机构：

[1] Chinese Acad Sci, CAS Key Lab Colloid & Interface & Thermodynam, CAS Res Educ Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci,Inst Chem, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China

[3] Huairou Natl Comprehens Sci Ctr, Phys Sci Lab, Beijing 101407, Peoples R China

[4] East China Normal Univ, Sch Chem & Mol Engn, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

来源：

CHEMICAL SCIENCE | 2020年 / 11卷 / 05期

基金：

中国国家自然科学基金;

关键词：

MONOMER PRODUCTION; DEPOLYMERIZATION; HYDROGENOLYSIS; OXIDATION; FRACTIONATION; CONVERSION; BIOMASS; HYDRODEOXYGENATION; LIGNOCELLULOSE; CHEMICALS;

D O I：

10.1039/c9sc05892c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Guaiacol is an important feedstock for producing various high-value chemicals. However, the current production route of guaiacol relies heavily on fossil resources. Using lignin as a cheap and renewable feedstock to selectively produce guaiacol has great potential, but it is a challenge because of its heterogeneity and inert reactivity. Herein, we discovered that La(OTf)(3) could catalyze the transformation of lignin with guaiacol as the only liquid product. In the reaction, La(OTf)(3) catalyzed the hydrolysis of lignin ether linkages to form alkyl-syringol and alkyl-guaiacol, which further underwent decarbonization and demethoxylation to produce guaiacol with a yield of up to 25.5 wt%, and the remaining residue was solid. In the scale-up experiment, the isolated yield of guaiacol reached up to 21.2 wt%. To our knowledge, this is the first work to produce pure guaiacol selectively from lignin. The bio-guaiacol may be considered as a platform to promote lignin utilization.

引用

页码：1347 / 1352

页数：6