| 摘要 |
An extractive distillation process for separating at least one cycloalkane or aromatic hydrocarbon from at least one close-boiling alkane employs as solvent at least one N-mercaptoalkyl-2-pyrrolidone, preferably N-( beta -mercaptoethyl)-2-pyrrolidone, either alone or in admixture with about 0.1-10 weight-% water. A liquid-liquid extraction process for separating at least one cycloalkane or aromatic hydrocarbon from at least one alkane employs as solvent at least one N-mercaptoalkyl-2-pyrrolidone, preferably N-( beta -mercaptoethyl)-2-pyrrolidone, either alone or in admixture with about 0.1-10 weight-% water.
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