Heats of vaporization of monoalkylcyclohexanes by the gas chromatography – calorimetry method

1978 ◽  
Vol 56 (19) ◽  
pp. 2493-2498 ◽  
Author(s):  
Richard Fuchs ◽  
L. Alan Peacock
Keyword(s):  
Gas Chromatography ◽  
Vapor Pressure ◽  
Stationary Phase ◽  
Empirical Method ◽  
Side Chains ◽  
Pressure Measurements ◽  
Heats Of Solution ◽  
Vapor Pressure Measurements ◽  
Heats Of Vaporization ◽  
Good Agreement

A recently developed empirical method for measuring beats of vaporization (ΔHv25) by a combination of gas chromatography and calorimetric heats of solution in the stationary phase has been applied to a series of 9 monoalkylcyclohexanes having C1–C12 side chains. The uncertainties in the measurements (0.07 – 0.23 kcal/mol) are critically evaluated. Comparison with literature ΔHv measurements indicates good agreement for low boiling compounds, and for high boiling compounds, values substantially more reliable than were previously obtained from vapor pressure measurements.

scholarly journals Critical Comments on “Assessment of the Thermodynamic Properties of DL-p-Mentha-1,8-diene, 4-Isopropyl-1-Methylcyclohexene (DL-Limonene) by Inverse Gas Chromatography (IGC)”

2020 ◽  
Vol 58 (5) ◽  
pp. 401-402
Author(s):  
William E Acree
Keyword(s):  
Gas Chromatography ◽  
Thermodynamic Properties ◽  
Vapor Pressure ◽  
Inverse Gas Chromatography ◽  
Thermodynamic Quantities ◽  
Pressure Measurements ◽  
Probe Molecules ◽  
Vapor Pressure Measurements ◽  
Published Paper ◽  
Heats Of Vaporization

Abstract A polemic is given regarding the calculated thermodynamic quantities reported in the published paper by Farschi and coworkers. The graph used to calculate the molar heat of sorption of organic probe molecules onto the liquid DL-limonene stationary phase erroneously plots the reciprocal of the centigrade temperatures, rather than the reciprocal of the Kelvin temperatures. Molar heats of vaporization of the organic probe molecules reported in the paper are abnormally small and are not in accord with published values determined from calorimetric and vapor pressure measurements.

Rapid Vapor-Collection Method for Vapor Pressure Measurements of Low-Volatility Compounds

2020 ◽  
Vol 92 (24) ◽  
pp. 16253-16259
Author(s):  
Megan E. Harries ◽  
Cheryle N. Beuning ◽  
Bridger L. Johnston ◽  
Tara M. Lovestead ◽  
Jason A. Widegren
Keyword(s):  
Vapor Pressure ◽  
Pressure Measurements ◽  
Collection Method ◽  
Vapor Collection ◽  
Vapor Pressure Measurements

scholarly journals Application of a Micro-Flow Regulating Valve in Saturated Vapor Pressure Measurements

Daxue Huaxue ◽  
2021 ◽  
Vol 0 (0) ◽  
pp. 2107062-0
Author(s):  
Shuai Zhang ◽  
Jian Zhang ◽  
Shaowei Bian ◽  
Yaping Zhao ◽  
Li Shen ◽  
...  
Keyword(s):  
Vapor Pressure ◽  
Saturated Vapor Pressure ◽  
Saturated Vapor ◽  
Pressure Measurements ◽  
Micro Flow ◽  
Vapor Pressure Measurements

Vapor Pressure Measurements and Correlation for trans-1-Chloro-3,3,3-trifluoroprop-1-ene

2019 ◽  
Vol 64 (7) ◽  
pp. 2947-2954 ◽  
Author(s):  
Shuhao Li ◽  
Fufang Yang ◽  
Kai Zhang ◽  
Yuanyuan Duan ◽  
Zhen Yang
Keyword(s):  
Vapor Pressure ◽  
Pressure Measurements ◽  
Vapor Pressure Measurements
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