摘要
为了综合利用酶解秸秆残渣,分别采用碱溶酸析法、高沸点醇提取法、甲酸乙酸法及碱性乙醇法从残渣中提取木质素,并对得到的木质素产品进行了傅里叶红外光谱分析、凝胶色谱分析、^(13)C NMR及~1H NMR分析等表征。实验结果表明:四种提取方法得到的木质素产品的结构相差不大;采用碱性乙醇法提取木质素收率最高(提取率93.5%,纯度94.1%),且操作简便、经济性高、适合工业化应用。
To utilize the fermentation residue of corn straw,the lignin component of fermentation residue was extracted by using acidification extraction,high boiling point alcohols extraction,formic acid-acetic acid-water extraction and alkaline-ethanol extraction methods,respectively.The obtained lignin products were characterized by fourier transform infrared spectroscopy（ FTIR）,gel permeation chromatography（ GPC）,carbon-13 nuclear magnetic resonance（^（13）C NMR） and proton nuclear magnetic resonance（^1H NMR）spectroscopy,etc.. Results showed that lignin products of different methods presented similar structures,and alkaline-ethanol extraction method exhibited several advantages over the others in terms of operability,lignin yield and economic efficiency which had a better prospect for industrialization.
作者
张通
白富栋
李政
薛冬
王领民
乔凯
ZHANG Tong;BAIFudong;LI Zheng;XUE Dong;WANG Lingmin;QIAO Kai(Fushun Research Institute of Petroleum and Petrochemicals,SINOPEC,Fushun 113001,China)
出处
《化学研究与应用》
CAS
CSCD
北大核心
2018年第6期901-906,共6页
Chemical Research and Application
基金
中国石油化工股份有限公司科技项目(SH1402
SH1601)资助
关键词
酶解残渣
木质素
提取方法
表征
fermentation residue
lignin
extraction method
characterization
