摘要
在90℃～100℃温和实验条件下,采用溶剂N 甲基 2吡咯烷酮(NMP)及其与二硫化碳(NMP+CS2)混合溶剂体系对我国7个典型煤种进行抽提研究。研究表明,NMP+CS2(75∶1v v)混合溶剂体系对煤有较好的抽提效果。除无烟煤外,其他6个煤种获得了20%以上的抽提率,长焰煤的抽提率为41%。抽提可溶物利用高效液相色谱进行分离并结合色谱保留指数对物质结构进行分析,实验发现,煤中的活性组分为C6以下的极性组分,而惰性组分为3个芳环的芳烃衍生物。
7 typical Chinese coal samples were extracted by NMP/CS_2 system at around 90?℃ by Soxhlet method. Compared with results from NMP, a higher coal extraction rate was acquired when NMP+CS_2 solvent system was adopted. Except for anthracite, above 20% extraction rate of other coals was acquired, particularly 41% for long flame coal. By using the method of retention index of coal extracts analysis by HPLC, it is found that the polar part with less than six-carbon numbers in coal is the active site for coal reactivity, and the inert site belongs to the aromatic hydrocarbon derivation with 3 aromatic rings.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2004年第2期160-164,共5页
Journal of Fuel Chemistry and Technology
基金
国家重点基础研究发展规划项目(G1999022101) ~~
关键词
溶剂抽提
煤结构
小分子相
保留指数
solvent extraction
coal structure
small molecular phase
retention index
