生物质化学工程2018，Vol.52Issue(2)：35-41,7.DOI:10.3969/j.issn.1673-5854.2018.02.007
利用TG-FTIR研究造纸黑液碱木质素的热解机理
Mechanism Study of Black Liquor Alkali Lignin Pyrolysis by Using TG-FTIR
摘要
Abstract
The TG-FTIR technique was used to investigate the pyrolysis characteristics of black liquor alkali lignin as well as its gas products.The results revealed that the pyrolysis process of alkali lignin comprised three stages and it mainly occurred at the temperature range from 200 to 500℃.The pyrolysis reaction of alkali lignin could be described by first-order reaction kinetics model and the apparent activation energies calculated by Coats-Redfern model were from 39.3 to 43.1 kJ/mol at different heating rates.The gas products of pyrolysis analyzed by FTIR contained H 2O,CO2,CO,CH4,methanol,phenols and N2O,in which CH4,methanol,phenols and N2O were mainly released at the temperature range from 300 to 500℃ and the maximal yields of these gas products were obtained at about 420℃.关键词
碱木质素/热解/动力学/热重-红外联用仪Key words
alkali lignin/pyrolysis/kinetics/TG-FTIR分类
轻工纺织引用本文复制引用
谭扬,马春富..利用TG-FTIR研究造纸黑液碱木质素的热解机理[J].生物质化学工程,2018,52(2):35-41,7.基金项目
中科院仪器设备功能开发技术创新项目(2017g0061) （2017g0061）
