文献类型：期刊文献

英文题名：Heat Capacity, Density, Vapor Pressure, and Enthalpy of Vaporization of Isoamyl DL-Lactate

作者：Xu, Jumei[1];Li, Shating[1];Zeng, Zuoxiang[1];Xue, Weilan[1]

机构：[1]East China Univ Sci & Technol, Inst Chem Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：64

期号：9

起止页码：3793

外文期刊名：JOURNAL OF CHEMICAL AND ENGINEERING DATA

收录：;EI(收录号：20193407351666);WOS:【SCI-EXPANDED(收录号:WOS:000486361300013)】；

语种：英文

外文关键词：Calorimeters - Vaporization - Vapor pressure - Enthalpy - Hydrostatic pressure - Atmospheric pressure

摘要：The density and the heat capacity at saturation vapor pressure of isoamyl DL-lactate were measured at a temperature range of 288.15-453.65 K using a capillary pycnometer and adiabatic calorimeter, respectively. The Antoine equation was used to correlate the vapor pressure data which was determined with an ebulliometric technique at a temperature range of 374.59-478.56 K, and the deviation between the calculated value and the experimental data was less than 0.87%. On the basis of the Clausius-Clapeyron equation, the vaporization enthalpy of isoamyl DL-lactate at atmospheric pressure boiling point (T-b, 474.89 K) was calculated to be 43.27 kJ/mol. According to the Othmer's method, the standard vaporization enthalpy, Delta H-vap (298.15 K) was estimated using octanol and heptanol as reference substances, and the results are 57.21 and 57.35 kJ/mol, respectively.