Improved Oxidative Cleavage of Lignin Model Compound by ORR in Protic Ionic Liquid

被引：26
|
作者：
Jiang, Haomin [1 ]
Wang, Lei [1 ]
Qiao, Lingling [1 ]
Xue, Aiguo [1 ]
Cheng, Yujuan [1 ]
Chen, Yueying [1 ]
Ren, Yuan [1 ]
Chen, Yongmei [1 ]
Wan, Pingyu [1 ]
机构：
[1] Beijing Univ Chem Technol, Fac Sci, Inst Appl Electrochem, Beijing 100029, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2019年 / 14卷 / 03期
基金：
北京市自然科学基金;
关键词：
p-benzyloxyl phenol (PBP); oxygen reduction reaction (ORR); protic ionic liquid (PIL); lignin depolymerization; reactive oxygen species (ROS); OXYGEN REDUCTION REACTION; ELECTROCHEMICAL OXIDATION; DIMETHYL-SULFOXIDE; SUPEROXIDE ION; ASPEN LIGNIN; KRAFT LIGNIN; DEGRADATION; CONVERSION; ELECTRODE; DEPOLYMERIZATION;
D O I：
10.20964/2019.03.10
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrochemical degradation of p-benzyloxyl phenol (PBP) in [HNEt3][HSO4] is investigated using an oxygen reductive reaction (ORR) cathode in a non-membrane cell. It is disclosed that the two-electron reductive products of O-2 (that is H2O2) is the main reactive oxygen species (ROS) in [HNEt3][HSO4], a protic ionic liquid (PIL). The degradation of PBP in PIL with the degradation rate of 48.2% and the current efficiency of 29.5% are obtained, which is higher than that in [BMIM][BF4], an aprotic ionic liquid (AIL). Based on the products identified by GC-MS, the effect of electro-generated H2O2 on the cleavage of ether bond in PBP is proposed. The result confirms that the appropriate number of protons in supporting electrolyte plays an important role in electrochemical degradation of lignin model compounds.
引用
收藏
页码：2645 / 2654
页数：10
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