科研之友
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摘要
The aim of this study is to investigate the possible use of ILs as solvents for two separation problems frequently encountered in petroleum industry: {aromatic sulfur compound + aliphatic hydrocarbon} or {nitrogen compound + aliphatic hydrocarbon}. This work is focused on three ILs: 1-ethyl-3-methylimidazolium thiocyanate, 1,3-dimethylimidazolium methylphosphonate, and tris-(2-hydroxyethyl)-methylammonium-methylsulfate: In the first part of this article, a study of new three ternary systems is studied in view of defining the capacity of proposed ILs as solvents for extraction of sulfur and nitrogen containing organic compounds from aliphatic hydrocarbons. Therefore, LLE measurements of ternary mixtures for five systems were measured at 298.15 K and at atmospheric pressure: {thiophene + n-heptane +1-ethyl-3-methylimidazolium thiocyanate}, {thiophene n-heptane 1,3-dimethylimidazolium methylphosphonate}, {thiophene n-heptane tris-(2-hydroxyethyl)-methylammonium-methylsulfate}, {pyridine + n-heptane +1-ethyl-3-methylimidazolium thiocyanate}, {pyridine + n-heptane +1,3-dimethylimidazolium methylphosphonate}. The second section of this article presents results of extraction of synthetic fuels model gasoline and model diesel by the use of selected ILs. The influence of extraction time or temperature as well as three stepped procedure using each time a fresh portion of ILs on the final fuel contamination was investigated.
- 出版日期2011-2-16
