期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：153
期号：2
页码：022015
DOI：10.1088/1755-1315/153/2/022015
语种：English
出版社：IOP Publishing
摘要：This work assessed the separation of aromatic and non-aromatic hydrocarbons in gasoline via liquid-liquid extraction, using benzene/n-octane as a model. The separation efficiency was determined at various temperatures and employing N, N-dimethyl formamide (DMF) with potassium, sodium and ammonium thiocyanate (NH4SCN) as the extraction solvent. DMF with NH4SCN gave the best results and generated a phase containing 99% mole benzene. A 12 h extraction using 20% NH4SCN in DMF at 25 °C and atmospheric pressure was found to be optimal. In addition, a solvent ratio of 1 in the mixture being extracted gives the best results. These results include a benzene distribution coefficient of up to 3.88 and a selectivity coefficient above 150.
