Solubility of carbon dioxide in binary and ternary mixtures with ethanol and water
Solubility of carbon dioxide in binary and ternary mixtures with ethanol and water
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DOI：
10.1016/j.fluid.2006.04.017
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发表时间：
2006-08-10
影响因子：
2.6
通讯作者：
Oliveira, J. Vladimir
中科院分区：
文献类型：
--
作者：
Dalmolin, I.;Skovroinski, E.;Oliveira, J. Vladimir
这项工作报告了二氧化碳在纯水和乙醇及其混合物中的气体溶解度数据和亨利常数。为此，构建了一个包含玻璃平衡池的简单实验室设备，方法主要包括在预先设定的压力下将气体注入并储存到系统中，然后允许气体溶解。考虑轻组分液相逸度的亨利定律的有效性，采用迭代法计算液相组成。实验在288-323 K的温度范围内进行，在纯溶剂和各种乙醇-水混合物的温度范围内高达6 atm。从实验气液平衡数据、P-x图、过量亨利常数以及溶液的部分摩尔焓和熵得到了确定。(c) 2006 Elsevier B.V.版权所有
This work reports gas solubility data and Henry's constants for carbon dioxide in pure water and ethanol and in their mixtures. For this purpose, a simple laboratory apparatus containing a glass equilibrium cell was constructed and the methodology consisted basically in injecting and storing the gas into the system at a pre-established pressure and then allow the gas dissolution. The liquid phase compositions were calculated through an iterative procedure considering the validity of Henry's law for the liquid phase fugacity of the lighter component. The experiments were performed in the temperature range of 288-323 K, up to 6 atm in pure solvents and at various ethanol-water mixture compositions. From the experimental gas-liquid equilibrium data, P-x diagrams, excess Henry's constants as well as partial molar enthalpy and entropy of solution have been determined. (c) 2006 Elsevier B.V. All rights reserved.