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A novel method for producing benzene polycarboxylic acids by electrochemical oxidation of Zhaotong lignite in aqueous nacl solution

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Carbon Resources Conversion 2024年第2期7卷 88-94页

作者： Ze-Zheng Li Wei-Jia Jiang Yu-Gao Wang Zhi-Lei Wang Jun Shen Xian-Yong Wei College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024ShanxiChina School of Basic Medicine Shanxi University of Chinese MedicineJinzhong 030619China Institute of Environmental Science Shanxi UniversityTaiyuan 030031China Shanxi Huayang New Material Technology Group Co. Ltd.YangquanShanxi 045000China Key Laboratory of Coal Processing and Efficient Utilization Ministry of EducationChina University of Mining&TechnologyXuzhou 221116JiangsuChina

The development of a coal-based synthetic route to produce benzene polycarboxylic acids(BPCAs)is of great importance for the highly efficient utilization of *** this paper,aqueous nacl^(-)electrolytic system was used to oxidize Zhaotong lignite to prepare *** electrochemical oxidation of lignite in aqueous nacl solution could produce more BPCAs than that in aqueous NaOH *** aqueous nacl electrolytic system could in-suit produce a stable OCl^(-),which was synthesized by the combination reaction between Cl_(2)and OH􀀀generated in the anode or cathode,*** in-suit produced OCl^(-)would degrade the organic structures of the lignite dispersing in the electrolyte to generate *** formation of BPCAs could be greatly affected by current density,electrolysis time and the addition amount of nacl in the electrolytic system,which resulted from that the factors played an important role in the generation of OCl^(-).The coal related model compounds including anthracene and phenanthrene were used to investigate the electrochemical oxidation mechanism of the *** results indicated that the aromatic ring structures in the lignite were attacked by O_(2)•^(-)from the OCl^(-)to afford BPCAs.

关键词： Lignite Benzene polycarboxylic acids Electrochemical oxidation aqueous nacl electrolytic system Coal related model compounds

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