82. Effect of Electron Donor Addition on The Extraction of Argonne Coals

抄録

The effect of electron donor addition on the extraction of Argonne Coals with carbon disulfide-N-methyl-2-pyrrolidinone (CS_2-NMP) mixed solvent (1:1 by volume) was investigated. Addition of PDA increased considerably the extraction yield for some of Argonne coals. For Upper Freeport, PDA increased extraction yield form 50.8 to 81.5% for exhaustive extraction with 50mg PDA/g-coal. The extraction yield for other coals studied also increased slightly. While adding 35 and 50mg PDA/g-coal are giving similar result, unexpectedly the addition of 100mg PDA/g-coal decreased the yield.