摘要
采用微波辅助加热,对新疆准东煤进行N-甲基吡咯烷酮(NMP)萃取,同时分别利用甲醇、四氢呋喃、二氯甲烷有机溶剂对萃取物进行溶解;对溶解物以及固体残留物采用气相色谱/质谱联用仪器(GC/MS)和傅里叶变换红外光谱仪(FTIR)进行分析.研究发现,基于NMP微波萃取的甲醇/四氢呋喃/二氯甲烷溶解方法,比单独使用低沸点溶剂萃取效果更好;通过比较发现,3种低沸点有机溶剂对NMP萃取物表现出不同的溶解特性;在煤的萃取溶解物中检测到大量含氮化合物以及9种含硫化合物、4种含氯化合物和2种含溴化合物.
Zhundong coal from Xinjiang province was extracted with N-methyl pyrrolidone（NMP）by microwave-assisted heating,and the extract was dissolved with methanol,tetrahydrofuran and dichloromethane,respectively. The solutes and residues were analyzed by gas chromatography/mass spectrometry（GC/MS）and Fourier transform infrared spectrum（FTIR）respectively. The results show that the extraction with NMP is more efficient than that using methanol/tetrahydrofuran/dichloromethane alone. The three solvents with low boiling point have different dissolution characteristics for the NMP extract. Meanwhile,a large number of nitrogen-containing compounds,nine,sulfur-containing compounds,four,chlorine-containing compounds and two,bromine-containing compounds were detected in the solutes.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2015年第3期260-266,共7页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(51176062
21176098)
关键词
准东煤
微波萃取
分子结构
GC/MS
FTIR
Zhundong coal
microwave-assisted extraction
molecular structure
GC/MS
FTIR
