Measurement of activity coefficients at infinite dilution in N-methyl-2-pyrrolidone and N-formylmorpholine and their mixtures with water using the dilutor technique

被引：39

作者：

Krummen, M ^{[1
]}

Gmehling, R ^{[1
]}

机构：

[1] Univ Oldenburg, D-26111 Oldenburg, Germany

来源：

FLUID PHASE EQUILIBRIA | 2004年 / 215卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

activity coefficients at infinite dilution; separation factor at infinite dilution; selectivity; capacity; extractive distillation; dilutor technique; co-solvent effect;

D O I：

10.1016/j.fluid.2003.10.010

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

With the help of the dilutor technique activity coefficients at infinite dilution have been measured for 24 solutes (alkanes, alkenes, cyclic hydrocarbons, aromatic hydrocarbons, ketones, ethers and alcohols) in N-methyl-2-pyrrolidone (NMP), N-formylmorpholine (NFM) and their mixtures with water in the temperature range between 303.15 and 333.15 K (in a few cases for temperatures up to 423.15 K). The influence of water on the activity coefficient at infinite dilution is presented for different solutes. Furthermore, the selectivities at infinite dilution (S-ij(infinity) = gamma(i)(infinity)/gamma(j)(infinity)) for the separation of aliphatics from aromatics are discussed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：283 / 294

页数：12

共 23 条

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Bender A.O, 1988, J PET RES, V7, P131

[2] Vapor-liquid equilibria, activity coefficients at infinite dilution and heats of mixing for mixtures of N-methyl pyrrolidone-2 with C5 or C6 hydrocarbons and for hydrocarbon mixtures [J].