7.アルゴンヌ炭の混合溶媒抽出における添加物の効果

抄録

A carbon disulfide (CS_2)-N-methyl-2-pyrrolidinone (NMP) mixed solvent was used for extraction of Argonne Premium Coal Samples at room temperature. Higher extraction yields (63.7-69.7wt%(daf)) for Upper Freeport coal were given when the extraction procedure were carried out under N_2 atmosphere than that 60wt%(daf) under air atmosphere. Addition of a small amount (25mg/1g-coal) of tetracyanoethylene (TCNE) gave 85wt%(daf) extraction yield with the CS_2-NMP mixed solvent at room temperature, an increase of about 25wt%(daf) of the yield, compared with that without TCNE.