期刊
PHYSICS AND CHEMISTRY OF LIQUIDS
卷 42, 期 6, 页码 615-623出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00319100412331284422
关键词
1-alkanols; density; molar volumes; viscosity; thermodynamic activation parameters for viscous flow
Densities and viscosities have been measured for twelve 1-alkanols from methanol to 1-dodecanol at temperatures ranging from 303.15 to 323.15 K. Molar volumes, V-m, have been calculated from the density data, which have been found to follow the additive equation, V-m = V-CH3 + nV(CH2) + V-OH, where n is the number of CH2 groups. V have been plotted against n, showing an excellent linear relationship. The average values of V-CH2 at 303.15 K and 323.15 K have been determined from the slopes of this equation. The viscosities have been found to increase almost exponentially with the number of carbon atoms at different temperatures. The thermodynamic activation parameters, free energy, DeltaG(not equal), enthalpy, DeltaH(not equal), and entropy, DeltaS(not equal) for viscous now have been plotted against the number of C atoms-all have been found to increase with the chain length of 1-alkanols.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据