Pb/DMF-EtOH体系中煤炭的电化学加氢:利用溶液萃取法研究煤炭在电解过程中的结构变化(英文)  

Electro hydrogenation of coal in a Pb /DMF-EtOH system: Structure change of coal observed by organic solvent extraction

作　　者：王超[1] 周尉[1] 印仁和[1] 

机构地区：[1]上海大学化学系,上海200444

出　　处：《燃料化学学报》2014年第3期262-269,共8页Journal of Fuel Chemistry and Technology

基　　金：supported by National Science Foundation of China(20873083,21003088 and 21173144);Funding of Shanghai education commission fifth key disciplines(J50102);State Key Laboratory of Chemical Engineering(SKL-ChE-08A01);Innovation Foundation of Shanghai University(SHUCX112038)

摘　　要：以DMF(氮,氮-二甲基甲酰胺)/乙醇为电解质溶液,研究了煤炭在铅电极表面的电化学加氢作用。利用有机溶剂萃取得到电解产物,并对其进行表征。通过元素分析分析发现,电解产物H/C原子比有了显著提高,体现出该电解体系较高的加氢效率。红外光谱显示,电解过程中C=O键和芳环结构得到了有效还原。煤分子结构中的桥键,如C-O-C,也发生了裂解反应。通过1H-NMR分析,进一步印证了煤电解过程中的结构变化,并提出了可能的反应机理。The electro-hydrogenation of coal on Pb electrode in a mixed dimethylformamide-ethanol （DMF-EtOH） electrolyte was investigated. The hydrogenation product was in-situ extracted from the organic solvent and characterized. The electrolysis products show a significant increase in H/C ratio, indicating increased hydrogenation efficiency. IR spectroscopy shows the reduction of C = O bond and aromatic ring, as well as the cleavage of bridge bonds, such as C-O-C, are the main reactions during the electrolysis. This is also confirmed by the increase of γ-H content measured by 1H-NMR.

关 键 词：煤炭 电化学还原 氢化 铅电极 有机电解液 

分 类 号：TQ529[化学工程—煤化学工程]