Classified Separation of Lignin Hydrothermal Liquefied Products

被引：85

作者：

Kang, Shimin ^{[1
]}

Li, Xianglan ^{[1
]}

Fan, Juan ^{[1
]}

Chang, Jie ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2011年 / 50卷 / 19期

关键词：

ORGANIC-ACIDS; SUPERCRITICAL WATER; LIQUEFACTION; ANTIOXIDANT; MECHANISMS; ESTERS;

D O I：

10.1021/ie2011356

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Alkaline lignin was liquefied under hydrothermal conditions, and the liquefied products were effectively separated into four main types of substances: benzenediols, monophenolic hydroxyl products, weak-polar products, and water-soluble products (low-molecular-weight organic acids, alcohols, etc.). The production process and yield of each classified products are discussed. More than half of the yields of the oil products consisted of phenolics. A mechanism for phenolic production from lignin liquefaction is proposed. It suggests that the decomposition of lignin under hydrothermal conditions occurs mainly by three steps: hydrolysis and cleavage of the ether bond and the C-C bond, demethoxylation, and alkylation.

引用

页码：11288 / 11296

页数：9

共 18 条

[1] Separation of phenols from Eucalyptus wood tar [J].