CAS OpenIR  > 研究所(批量导入)
甲基环已烷-庚烷-(混合)溶济体系的相平衡研究
廖晓星
Subtype硕士
Thesis Advisor伍志春
1998-07-01
Degree Grantor中国科学院研究生院
Abstract本研究采用浊点法测定了甲基环已烷-庚烷-单一溶剂(N-甲基-吡咯烷酮)或混合溶剂(N-甲基-吡咯烷酮+环丁砜、苯甲醇+环丁砜)的三元或四元体系在25±0.1℃、35±0.1℃、45±0.1℃下的液液分层曲线。结合体系的物性(如折光指数或比重),又测定了各体系的结线数据。由试验数据计算得到的选择性系数、溶解度和容量等数据,可以初步评价N-甲基-吡咯烷酮单一溶剂以及几种不同组成的多个混合溶剂体系(N-甲基-吡咯烷酮+环丁砜、苯甲醇+环丁砜)萃取分离烷烃与环烷烃的基本性能。同时考察了温度对这些溶剂体系的选择性系数、溶解度和容量的影响。研究发现常温下N-甲基-吡咯烷酮纯溶剂的选择性系数较小,但与环丁砜组成混合溶剂体系能在一定范围内提高选择性系数。同一温度下,就选择性系数、溶解度和容量而言,相同组成(重量)的苯甲醇与环丁砜混合溶剂体系优于N-甲基-吡咯烷酮与环丁砜混合溶剂体系。升高温度,能提高溶剂的溶解能力。用N-甲基-吡咯烷酮与环丁砜、苯甲醇与环丁砜组成混合溶剂体系来萃取分离烷烃与环烷烃的研究锄头见于文献报道。本工作为N-甲基-吡咯烷酮与环丁砚、苯甲醇与环丁砜组成的多种混合溶剂体系萃取分离烷烃与环烷烃的可行性评价及其工业应用前景的可行性评估提供了较为丰富的基础研究数据,具有一定的指导意义。
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.
Pages58
Language中文
Document Type学位论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/8322
Collection研究所(批量导入)
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.
Files in This Item:
File Name/Size DocType Version Access License
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
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[廖晓星]'s Articles
Baidu academic
Similar articles in Baidu academic
[廖晓星]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[廖晓星]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.