摘要
以麦秸为对象,考察了氢键供体种类、温度、时间对麦秸中木质素溶解的影响,并通过对溶解后麦秸残渣进行FT-IR分析,研究了溶解机理。结果表明:在温度为90℃、时间为7 h、固液质量比为1∶10的条件下,氯化胆碱-单乙醇胺(C-M)对麦秸中的木质素溶解率高达59.2%。通过FT-IR分析了溶解前后麦秸的结构,证明了C-M通过切断酯键、醚键来溶解麦秸中的木质素。
In this paper,the effects of type of hydrogen bond donor,temperature and time on the dissolution of lignin in wheat straw were investigated,and the dissolution mechanism was studied by FT-IR characterization of wheat straw residues. The results showed that the choline chloride: monoethanolamine( C-M) can dissolve 59. 2% lignin in wheat straw with liquid/solid( L/S) mass ratio of 10∶ 1 at 90 ℃ for 7 h.The structure of the wheat straw before and after dissolution was analyzed by FT-IR,demonstrating that C-M dissolves lignin in wheat straw by severing the ester and ether bonds.
作者
赵旭阳
赵峥
姚琦
李东林
孙晓然
韩利华
Zhao Xuyang;Zhao Zheng;Yao Qi;Li Donglin;Sun Xiaoran;Han Lihua(School of Chemical Engineering,North China University of Technology,Tangshan,Hebei 063210,China)
出处
《云南化工》
CAS
2021年第12期52-54,共3页
Yunnan Chemical Technology
关键词
氯化胆碱
低共熔溶剂
麦秸
木质素
choline chloride
deep eutectic solvent
wheat straw,lignin