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Thesis Advisor伍志春
Degree Grantor中国科学院研究生院
Other AbstractSolubility curves have been determined for the ternary or quaternary systems of methyl cyclohexane-n-heptane-single solvent (N-methyl-pyrrolidone) or combined solvents (N-methyl-pyrrolidone+sulfolane or benzyl alcohol+sulfolane) at 25±0.1℃、35±0.1℃ and 45±0.1℃ by the titration method. Equilibrium tie lines for the systems above mentioned have also been determined in conjunction with the physical properties, such as refractive index and density. the results can be used to evaluate the extractive properties of N-methyl-pyrrolidone and several combined-solvents system with different ratio by weight for separating methyl cyclohexane from n-heptane. Besides, effects of temperature have been discussed. We found N-methyl-pyrrolidone-sulfolane systems have higher selectivity than single N-methyl-pyrrolidone at normal temperature. At the same temperature, benzyl alcohol-sulfolane systems have such better extractive properties as selectivity、solubility etc, than N-methyl-pyrrolidone-sulfolane systems with same ratio by weight. The higher the temperature, the greater the solubility of solvents systems. Not too much work on methyl cyclohexane-n-heptane-combined solvents of N-methyl-pyrrolidone and sulfolane or benzyl alcohol and sulfolane was reported. So, the present work will be valuble in data accumulation for liquid-liquid phase equilibrium and in evaluating the possibility of separating methyl cyclohexane from n-heptane using these combined-solvents systems.
Document Type学位论文
Recommended Citation
GB/T 7714
廖晓星. 甲基环已烷-庚烷-(混合)溶济体系的相平衡研究[D]. 中国科学院研究生院,1998.
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甲基环已烷-庚烷-(混合)溶济体系的相平(2728KB) 限制开放CC BY-NC-SAApplication Full Text
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