Solubility of carbon dioxide in two pentaerythritol ester oils between (283 and 333) K
Solubility of carbon dioxide in two pentaerythritol ester oils between (283 and 333) K
复制标题
DOI：
10.1021/je800178x
复制
发表时间：
2008-08-01
期刊：
影响因子：
--
通讯作者：
Fernandez, Josefa
中科院分区：
文献类型：
--
作者：
Fandino, Olivia;Lopez, Enriqueta R.;Fernandez, Josefa
在一个新的高压气体溶解度实验装置中，在（283 ~ 333）K和7 MPa的压力下，研究了CO2在季戊四醇四戊酸酯（PEC 5）和季戊四醇四（2-乙基己酸）酯（PEBE 8）中的溶解度。结果表明，在目前的分析范围内，CO2是高度可溶于这些油，并表示为CO2摩尔分数的溶解度实际上是不依赖于酸链的分支，而它略有增加的PE酸链的长度在本范围内的组合物。气体溶解度数据与Soave-Redlich-Kwong（SRK）状态方程（EOS），使用传统的二次混合规则与每个温度下的两个相互作用参数令人满意的相关。
In this work, the solubility of carbon dioxide, CO2, in pentaerythritol tetrapentanoate (PEC5) and in pentaerythritol tetra(2-ethylhexanoate) (PEBE8) has been performed from (283 to 333) K and pressures up to 7 MPa in a new high-pressure gas solubility apparatus. The results show that in the present analyzed range CO2 is highly soluble in these oils and that the solubility expressed as CO2 mole fraction is practically not dependent on the branching of the acid chain, whereas it increases slightly with the length of the PE acid chains in the present range of compositions. The gas solubility data were satisfactorily correlated with the Soave-Redlich-Kwong (SRK) equation of state (EOS) using the conventional quadratic mixing rule with two interaction parameters for each temperature.