Solubilities of Carbon Dioxide in a Dipentaerythritol Ester and in a Polyether
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- 作者：Olivia Fandio ; Enriqueta R. Lpez ; Luis Lugo ; Josefa Fernndez
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2010
- 出版时间：December 9, 2010
- 年：2010
- 卷：55
- 期：12
- 页码：5483-5488
- 全文大小：195K
- 年卷期：v.55,no.12(December 9, 2010)
- ISSN：1520-5134
文摘
The solubility of carbon dioxide, CO2, in dipentaerythritol hexaheptanoate (DiPEC7) and a polypropylene glycol dimethyl ether (PAG1) was measured at 283.15 K, 298.15 K, 323.15 K, and 348.15 K, and pressures up to 7 MPa in a high-pressure gas solubility apparatus. A total of 42 pTx values were measured with an isochoric technique, having a mole fraction relative uncertainty of 4 %. The results for DiPEC7 together with the experimental literature data show that, in the present analyzed range, the CO2 solubility expressed in mole fraction in the polyolester oils increases with the number of the polar carboxyl groups. In mass fraction, the solubilities of CO2 in DiPEC7 are lower than in PAG1 and also lower than in several other pentaerythritol esters (PEs).