SELECTIVE ISOLATION AND CHARACTERIZATION OF “MINA DO LEÃO” COAL TAR BASES
- 1 January 1990
- journal article
- research article
- Published by Taylor & Francis in Fuel Science and Technology International
- Vol. 8 (8) , 881-898
- https://doi.org/10.1080/08843759008915963
Abstract
Selective isolation of coal tar bases was performed by using two different separation methods: liquid-liquid extraction (LLE) and column liquid chromatography (CLC). Two cuts, A (boiling range 100°C – 230°C) and B (boiling range 230°C – 300°C), obtained by distillation of “Mina do Leao” coal tar oil, are compared after the isolation of bases by both methods through elemental analysis, infra-red spectroscopy and mass yield. In addition, cut A and its bases generated by both LLE and CLC were investigated by GC/MS. Pyridines, quinolines and anilines are the major classes found in the base fractions obtained by both methods. Although both showed to be equally selective for base isolation, the column liquid chromatography method demonstrated better recovery.Keywords
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