Measurements of Vapor Pressure, Heat Capacity, and Density along the Saturation Line for ε-Caprolactam, Pyrazine, 1,2-Propanediol, Triethylene Glycol, Phenyl Acetylene, and Diphenyl Acetylene
Measurements of Vapor Pressure, Heat Capacity, and Density along the Saturation Line for ε-Caprolactam, Pyrazine, 1,2-Propanediol, Triethylene Glycol, Phenyl Acetylene, and Diphenyl Acetylene
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ε-己内酰胺、吡嗪、1,2-丙二醇、三乙二醇、苯乙炔和二苯乙炔沿饱和线的蒸气压、热容和密度测量
DOI：
10.1021/je010085z
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发表时间：
2002
影响因子：
--
通讯作者：
A. Nguyen
中科院分区：
文献类型：
--
作者：
W. Steele;R. Chirico;and S. E. Knipmeyer;A. Nguyen
本文报道了DIPPR研究项目821在1996项目年度的测量结果。使用双沸点测定仪测量了所有六种化合物的蒸汽压，压力极限为270kpa(除非发生分解)。此外，对于e-己内酰胺，使用倾斜活塞装置在低压(0.043 kpa至3.08kpa)下进行测量。在一定的温度范围内(从环境到最高温度548K)，测量了每种化合物在饱和线上的液体密度。用差示扫描量热计测量了每种化合物在临界温度或较低分解点附近的温度区域内的两相(液体+蒸汽)热容。实验测定了吡嗪的临界温度和相应的临界密度。将所有测量的结果结合在一起，得出了一系列热物理性质，包括临界温度、临界密度、临界压力、偏心温度和温度。
This paper reports measurements made for DIPPR Research Project 821 in the 1996 Project Year. Vapor pressures were measured to a pressure limit of 270 kPa (unless decomposition occurred) for all six compounds using a twin ebulliometric apparatus. Additionally, for e-caprolactam, measurements at low pressures (0.043 kPa to 3.08 kPa) were performed using an inclined-piston apparatus. Liquid-phase densities along the saturation line were measured for each compound over a range of temperatures (ambient to a maximum of 548 K). A differential scanning calorimeter was used to measure two-phase (liquid + vapor) heat capacities for each compound in the temperature region ambient to the critical temperature or lower decomposition point. A critical temperature and the corresponding critical density were determined experimentally for pyrazine. The results of all the measurements were combined to derive a series of thermophysical properties including critical temperature, critical density, critical pressure, acentric ...