Thermodynamic Properties of Compressed Liquid Methanol in the Vicinity of the Freezing Line
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- 作者：Mercedes Taravillo ; Francisco J. Pé ; rez ; Javier Nú ; ñ ; ez ; Mercedes Cá ; ceres ; Valentí ; n G. Baonza
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2007
- 出版时间：March 2007
- 年：2007
- 卷：52
- 期：2
- 页码：481 - 486
- 全文大小：83K
- 年卷期：v.52,no.2(March 2007)
- ISSN：1520-5134
文摘
We present direct measurements of the isothermal compressibility (
T) and thermal expansion coefficient (
p) ofliquid methanol using an expansion technique. The measurements of T were carried out along six isothermsfrom (208.17 to 298.16) K at pressures up to 101 MPa. For p, we have measured four isobars from (0.59 to80.03) MPa from 195 K up to 300 K. Our experimental results of p(T) for the 0.59 MPa isobar exhibit a minimumaround 224 K. A clear shift of the minimum to higher temperatures is observed as the pressure increases alongthe different isobars. Interestingly, the minima for the isobars of p(
) take place within a narrow range of densities,around 26.5 mol·dm-3 (about 3.15 times the critical density).
T) and thermal expansion coefficient (p) ofliquid methanol using an expansion technique. The measurements of T were carried out along six isothermsfrom (208.17 to 298.16) K at pressures up to 101 MPa. For p, we have measured four isobars from (0.59 to80.03) MPa from 195 K up to 300 K. Our experimental results of p(T) for the 0.59 MPa isobar exhibit a minimumaround 224 K. A clear shift of the minimum to higher temperatures is observed as the pressure increases alongthe different isobars. Interestingly, the minima for the isobars of p() take place within a narrow range of densities,around 26.5 mol·dm-3 (about 3.15 times the critical density).