DIELECTRIC BEHAVIOR OF METHANOL AND RELATED POLAR FLUIDS AT HIGH-PRESSURES AND TEMPERATURES
DIELECTRIC BEHAVIOR OF METHANOL AND RELATED POLAR FLUIDS AT HIGH-PRESSURES AND TEMPERATURES
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DOI：
10.1039/dc9786600191
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发表时间：
1978-01-01
影响因子：
3.4
通讯作者：
DEUL, R
中科院分区：
文献类型：
--
作者：
FRANCK, EU;DEUL, R
在 32 至 252 °C 和高达 2000 bar 的压力（临界温度：240 °C）下测量了液态甲醇的介电常数（介电常数）ε。给出了装置和方法的细节。 32 °C 时，Δ(1 bar)= 31.9，Δ(2000 bar)= 36.4。在 252 °C 时，Δ(200 bar)= 7.2，Δ(2000 bar)= 12.3。导出柯克伍德相关因子 g，并将其表示为温度和密度的函数。在 32 °C 时，g 约为 3.0，具有负等温密度依赖性。在 252 °C 时，低密度 (200 bar) 下 g= 1.9，并在较高密度下增加并显示最大值。给出了 CH3CN、CH3F、CHF3、H2O、HCl 和 NH3 结果的比较讨论。
The dielectric constant (permittivity), ε, of liquid methanol has been measured from 32 to 252 °C and at pressures up to 2000 bar (critical temp: 240 °C). Details of apparatus and method are given. At 32 °C, ε(1 bar)= 31.9 and ε(2000 bar)= 36.4. At 252 °C, ε(200 bar)= 7.2 and ε(2000 bar)= 12.3. Kirkwood correlation factors, g, are derived and presented as functions of temperature and density. At 32 °C, g is about 3.0 with negative isothermal density dependence. At 252 °C, g= 1.9 at low density (200 bar) and increases showing a maximum at higher density. A comparative discussion with results for CH3CN, CH3F, CHF3, H2O, HCl and NH3 is given.