Solvent Extraction of Separated Macerals in Carbon Disulfide/N-Methylpyrrolidone†
Solvent Extraction of Separated Macerals in Carbon Disulfide/N-Methylpyrrolidone†
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DOI：
10.1021/ef0100350
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发表时间：
2001-10
期刊：
影响因子：
5.3
通讯作者：
G. Dyrkacz;C. Bloomquist
中科院分区：
文献类型：
--
作者：
G. Dyrkacz;C. Bloomquist
采用二硫化碳/N-甲基吡咯烷酮为介质，在室温下对6种煤的密度分离显微组分进行了萃取。发现镜质组具有最高的萃取物产率。脂质组和惰质组均表现出较低的可萃取性。此外，可提取性的差异被发现在同一显微组分组，如镜质组的个别馏分。结果表明，镜质组的提取可能是一个非均相过程，其中某些亚显微组分镜质组颗粒提取不同。这可能对依赖提取物或提取残留物来确定原始煤结构性质的实验产生影响。
Maceral fractions derived from density separations of six coals were extracted at room temperature in carbon disulfide/N-methylpyrrolidone based media. Vitrinite was found to have the highest extract yield. Both liptinites and inertinites exhibited lower extractability. In addition, differences in extractability were found within individual fractions of the same maceral group, such as the vitrinite group. The results show that extraction of vitrinite can be a heterogeneous process where certain submaceral vitrinite particles extract differently. This may have implications for experiments that rely on extracts or residues from extractions to determine the nature of the original coal structure.