文献类型：期刊文献

中文题名：木材正辛醇液化产物的红外光谱分析

英文题名：FTIR Analysis of Products Derived from Wood Liquefaction with 1-Octanol

作者：邹献武[1] 杨智[2] 秦特夫[1]

第一作者：邹献武

通信作者：Qin, TF[1]

机构：[1]国家林业局木材科学与技术重点实验室,中国林业科学研究院木材工业研究所,北京100091;[2]北京理工大学理学院,北京100081

年份：2009

期号：6

起止页码：1545-1548

中文期刊名：光谱学与光谱分析

外文期刊名：Spectroscopy and Spectral Analysis

收录：CSTPCD;;EI(收录号：20092712164020);Scopus(收录号：2-s2.0-67649221948);WOS:【SCI-EXPANDED(收录号:WOS:000266681400024)】；北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；PubMed;

基金：国家林业局“948”项目(2006-4-C05);中国林业科学研究院新技术所所长基金项目(CAFINT2008C07);“十一五”科技支撑计划项目(2006BAD18B1002)资助

语种：中文

中文关键词：木材;液化;红外光谱;轻质油;重质油

外文关键词：Wood; Liquefaction; FTIR; Light oil; Heavy oil

分类号：TQ351

摘要：溶剂溶解技术是生物质液化的重要过程之一。为了在温和条件下从生物质中生产高质量的液体燃料,有必要开发新型液化溶剂。而对液化产物的分析则是评价溶剂液化效果的主要途径。在不锈钢高压釜中进行杨木粉在酸化正辛醇中的液化反应,对液化产物先后用丙酮,正己烷萃取,得到液化残渣、重质油和轻质油。通过对液化残渣、重质油和轻质油的红外光谱分析考察了木材中纤维素、半纤维素和木质素的液化规律和转化机理。结果表明,木材液化油品是复杂的混合物,含有羟基、羰基、甲氧基、芳基和醚类化合物。纤维素/半纤维素比木质素更容易液化。纤维素/半纤维素主要转化为轻质油,而木质素液化产物主要是重质油。在150℃木质素液化降解生成小分子芳烃,继续升高液化温度导致小分子芳烃重聚合。
Solvolysis is one of the important processes of biomass liquefaction. To produce superior quality liquid biofuel from biomass under mild conditions, it is essential to exploit novel reactive liquid solvent. Furthermore, the evaluation of liquefaction efficiency is carried out mainly by the means of analysis of the products derived from biomass liquefaction. In the present study, liquefaction of poplar wood powder in acidified 1 octanol was investigated with a stainless steel autoclave. Residue, heavy oil and light oil were separated from the liquefaction products by extraction with acetone and n-hexane successively. FTIR analysis was carried out on these liquefaction compositions to illuminate the liquefaction regularities and mechanisms of cellulose, hemicellulose and lignin of wood. The results showed that liquefaction oils were complex mixture containing hydroxide, carbonyl, methoxyl, aromatic and aether. Liquefactions of cellulose and hemicellulose were easier than that of lignin. Cellulose and hemicellulose were converted to light oil, however, lignin was mainly converted to heavy oil. At 150 ℃, lignin was depolymerized and degraded into micromolecular aromatic compounds, among which condensation reactions took place when reaction temperature increased.