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.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
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)
关键词
煤炭
电化学还原
氢化
铅电极
有机电解液
coal
electro-reduction
hydrogenation
Pb electrode
organic electrolyte
