Measurement and Correlation of Isothermal Vapor–Liquid Equilibrium of Fluoroethane + Dimethyl Ether Triethylene Glycol, 1,1-Difluoroethane + Dimethyl Ether Triethylene Glycol, and 1,1-Difluoroethane + N-Methyl-2-pyrrolidone Systems
Measurement and Correlation of Isothermal Vapor–Liquid Equilibrium of Fluoroethane + Dimethyl Ether Triethylene Glycol, 1,1-Difluoroethane + Dimethyl Ether Triethylene Glycol, and 1,1-Difluoroethane + N-Methyl-2-pyrrolidone Systems
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DOI：
10.1021/acs.jced.5b00782
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发表时间：
2016-02
影响因子：
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通讯作者：
Lejun Feng;D. Zheng;Weijia Huang;Zhaokun Ma
中科院分区：
文献类型：
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作者：
Lejun Feng;D. Zheng;Weijia Huang;Zhaokun Ma
本文测定了氟乙烷(HFC161)+二甲醚三甘醇(DMETrEG)、1，1-二氟乙烷(HFC152a)+二甲基醚三甘醇(DMETrEG)和HFC152a+N-甲基-2-吡咯烷酮(NMP)三个体系在293.15~353.15 K的汽液平衡数据，并用五参数非随机两液模型进行了关联。HFC161+DMETrEG、HFC152a+DMETrEG和HFC152a+NMP体系的压力平均相对偏差分别为1.33%、1.43%和1.23%，最大相对偏差分别为3.70%、3.66%和3.29%。通过比较HFC161/HFC152a+醚、酰胺和酮体系的活度系数和分析分子间氢键的相互作用，讨论了HFC161/HFC152a+醚、酰胺和酮体系的汽液平衡行为。结果表明，与HFC152a+相比，HFC161+吸附体系对Raoult定律有负偏离，具有较好的亲和力.
In this paper, the vapor–liquid equilibrium (VLE) data of three systems, fluoroethane (HFC161) + dimethyl ether triethylene glycol (DMETrEG), 1,1-difluoroethane (HFC152a) + DMETrEG, and HFC152a + N-methyl-2-pyrrolidone (NMP), were measured from 293.15 to 353.15 K. The five-parameters nonrandom two-liquid (NRTL) model was selected to correlate the VLE data. For the HFC161 + DMETrEG, HFC152a + DMETrEG, and HFC152a + NMP systems, the average relative deviations of the pressure are 1.33%, 1.43%, and 1.23%, respectively, and the maximum deviations of the pressure are 3.70%, 3.66%, and 3.29%, respectively. The VLE behavior of HFC161/HFC152a + ethers, amides, and ketone systems were discussed by comparing the activity coefficient with the values for seven literature working pair systems and analyzing the interactions of the intermolecular hydrogen bonds. The results show that the HFC161 + absorbent systems exhibit negative deviations from Raoult’s law and have a relatively good affinity compared to the HFC152a +...