Vapor–Liquid–Liquid Equilibria Measurements for the Dehydration of Ethanol, Isopropanol, and n-Propanol via Azeotropic Distillation Using DIPE and Isooctane as Entrainers
Vapor–Liquid–Liquid Equilibria Measurements for the Dehydration of Ethanol, Isopropanol, and n-Propanol via Azeotropic Distillation Using DIPE and Isooctane as Entrainers
复制标题
使用 DIPE 和异辛烷作为共沸剂通过共沸蒸馏进行乙醇、异丙醇和正丙醇脱水的气-液-液平衡测量
DOI：
10.1021/je300847v
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发表时间：
2013
影响因子：
--
通讯作者：
A. J. Burger
中科院分区：
文献类型：
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作者：
C. Pienaar;C. Schwarz;J. Knoetze;A. J. Burger
测定了乙醇/二异丙醚（DIPE）/水、正丙醇/DIPE/水和正丙醇/2，2，4-三甲基戊烷（异辛烷）/水体系在101.3 kPa下的汽液平衡和汽液液平衡数据。在配备有超声均化器的Guillespie型蒸馏器中仔细测量数据。的汽液平衡数据被发现是一致的，和液液平衡部分的VLLE数据遵循一个定期的配置文件根据Othmer-Tobias相关。在（334.19 ~ 336.29）K、（335.31 ~ 345.76）K和（347.74 ~ 352.31）K的温度范围内，乙醇/DIPE/水、正丙醇/DIPE/水和正丙醇/异辛烷/水体系分别出现了汽液平衡。这些VLLE区域涵盖了水和醇的组成的宽范围，醇的摩尔分数高达约0.4。乙醇/DIPE/水和正丙醇/异辛烷/水体系分别在334.19和347.74 K下表现出三元非均相液晶。然而，......
Vapor–liquid equilibrium (VLE) and vapor–liquid–liquid equilibrium (VLLE) data were measured for the ethanol/diisopropyl ether (DIPE)/water, n-propanol/DIPE/water, and n-propanol/2,2,4-trimethylpentane (isooctane)/water systems at 101.3 kPa. The data were carefully measured in a Guillespie type still, equipped with an ultrasonic homogenizer. The VLE data were found to be thermodynamically consistent, and the LLE part of the VLLE data followed a regular profile according to the Othmer–Tobias correlation. VLLE were observed in the temperature ranges of (334.19 to 336.29) K, (335.31 to 345.76) K, and (347.74 to 352.31) K for the ethanol/DIPE/water, n-propanol/DIPE/water, and n-propanol/isooctane/water systems, respectively. These VLLE regions encompassed wide ranges for water and entrainer composition, with alcohol mole fractions of up to approximately 0.4. The ethanol/DIPE/water and n-propanol/isooctane/water systems displayed ternary heterogeneous azeotropes at (334.19 and 347.74) K, respectively. However,...