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Thermodynamic Properties of cis-1,1,1,4,4,4-Hexafluorobutene [R-1336mzz(Z)]: Vapor Pressure, (p, ρ, T) Behavior, and Speed of Sound Measurements and Equation of State
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-03-29 , DOI: 10.1021/acs.jced.9b01198
Mark O McLinden 1 , Ryo Akasaka 2, 3
Affiliation  

We present experimental measurements of the density, speed of sound, vapor pressure, and dew-point pressure of cis-1,1,1,4,4,4-hexafluorobutene, which is also known as R-1336mzz(Z). Vapor pressures were measured at temperatures from 330 to 440 K; the dew-point pressure was measured at T = 293.15 K. Densities were measured in the liquid and supercritical regions over the temperature range of 230 to 460 K, with pressures up to 36 MPa. Vapor-phase sound speeds were measured at temperatures between 280 and 480 K, with pressures from 0.021 to 2.2 MPa. Densities and dew points were measured in a two-sinker densimeter with a magnetic suspension coupling. Vapor pressures were measured with a static technique in the densimeter. Sound speed data were measured with a spherical acoustic resonator. An equation of state written in terms of the Helmholtz energy was developed based on these data together with additional data from the literature; it represents the present experimental data with relative average absolute deviations (AAD) of 0.0081% for densities, 0.027% for vapor pressure, and 0.017% for vapor-phase speed of sound. Literature data for liquid-phase speed of sound have an AAD of 0.023%, and for saturated liquid density data, the AAD is 0.049%.

中文翻译:


顺式 1,1,1,4,4,4-六氟丁烯 [R-1336mzz(Z)] 的热力学性质:蒸气压、(p, ρ, T) 行为、声速测量和状态方程



我们对顺式-1,1,1,4,4,4-六氟丁烯(也称为 R-1336mzz(Z))的密度、声速、蒸气压和露点压力进行了实验测量。蒸气压在 330 至 440 K 的温度下测量;露点压力在T = 293.15 K 时测量。密度在 230 至 460 K 的温度范围内、压力高达 36 MPa 的液体和超临界区域中测量。气相声速是在 280 至 480 K 的温度、0.021 至 2.2 MPa 的压力下测量的。密度和露点是在带有磁悬浮联轴器的双沉降片密度计中测量的。蒸气压是用密度计中的静态技术测量的。声速数据是用球形声谐振器测量的。根据这些数据以及文献中的其他数据,开发了以亥姆霍兹能量表示的状态方程;它代表当前的实验数据,密度相对平均绝对偏差 (AAD) 为 0.0081%,蒸气压为 0.027%,气相声速为 0.017%。液相声速的文献数据的 AAD 为 0.023%,饱和液体密度数据的 AAD 为 0.049%。
更新日期:2020-03-29
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