准东次烟煤中长链烷醛的富集与分析(英文)  

Enrichment and analysis of long-chain normal alkanals from Zhundong subbituminous coal

作　　者：丛兴顺[1,2] 宗志敏[1] 周音[1] 李敏[1] 赵云鹏[1] 樊星[1] 魏贤勇[1] 

机构地区：[1]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116 [2]枣庄学院化学系,山东枣庄277160

出　　处：《燃料化学学报》2014年第3期257-261,共5页Journal of Fuel Chemistry and Technology

基　　金：National Basic Research Program of China(973 Program,2011CB201302);the Key Project of Natural Science Foundation of China(20936007);the Fund from Natural Science Foundation of China for Innovative Research Group(51221462);the Key Project of Coal Joint Fund from Natural Science Foundation of China and Shenhua Group Corporation Limited(51134021);The Strategic Chinese-Japanese Joint Research Program(2013DFG60060);National Natural Science Foundation of China(51074153);National Natural Science Foundation of China for Young Researchers(21206187 and 21206188);the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：用等体积的二硫化碳（CDS）与丙酮的混合溶剂萃取了准东次烟煤得到可溶物,然后依次用石油醚（PE）和CDS萃取该可溶物为PE萃取物（E1）和CDS萃取物（E2）.在硅胶层析柱中依次用PE和30％的CDS/PE对E2进行洗脱,富集了长链烷醛（LCNAs,C18～27）并用气相色谱/质谱联用仪分析了LCNAs.分级萃取和柱层析提供了从中低阶煤中富集LCNAs的有效方法.LCNAs可能是煤中重要的生物标志物.Zhundong subbituminous coal was exhaustively extracted with isometric carbon disulfide （CDS） and acetone mixed solvent. The extract was fractionated with petroleum ether （PE） and CDS into PE-extractable portion （E1） and CDS-extractable portion （E2）. E2 was sequentially eluted with PE and 30% CDS/PE mixed solvent through a silica gel-packed column. A series of long-chain normal alkanals （LCNAs, C18-27 ） were enriched from E2 and identified with a gas chromatography/mass spectrometer. The fractional extraction and subsequent colunm chromatography provide an effective approach for enriching LCNAs from middle- and low-rank coals. LCNAs could be a class of important biomarkers.

关 键 词：长链烷醛 准东次烟煤 分级萃取 柱层析 

分 类 号：TQ533.6[化学工程—煤化学工程]