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首页> 外文期刊>Fluid Phase Equilibria >Speeds of sound and isentropic compressibilities of (n-heptanol plus n-pentane, or n-hexane, or n-heptane, or n-octane) at T=303.15 K, and of (n-heptanol+2,2,4-trimethylpentane) at T=293.15 and 303.15 K
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Speeds of sound and isentropic compressibilities of (n-heptanol plus n-pentane, or n-hexane, or n-heptane, or n-octane) at T=303.15 K, and of (n-heptanol+2,2,4-trimethylpentane) at T=293.15 and 303.15 K

机译：（正庚醇加正戊烷或正己烷或正庚烷或正辛烷）在T = 303.15 K时和（正庚醇+ 2,2,4-）的声速和等熵压缩率三甲基戊烷）在T = 293.15和303.15 K

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Speeds of sound u have been measured in binary liquid mixtures of n-heptanol (n-C7H15OH) and n-pentane (n-C5H12), or n-hexane (n-C6H14), or n-heptane (n-C7H16), or n-octane (n-C8H18) at T = 303.15 K and in binary liquid mixtures of n-heptanol and 2,2,4-trimethylpentane (2,2,4-(CH3)(3)C5H9) at T = 293.15 and 303.15 K. The values of u have been used to calculate the apparent excess speeds of sound Deltau and the isentropic compressibilities K-S for these mixtures. The excess isentropic compressibilities K-S(E) have also been calculated from the values of K-S. The K-S(E) property has been found to be negative throughout the entire composition range for {x n-C7H15OH + (1 - x)n-C5H12}, {x n-C7H15OH + (1 - x)n-C6H14}, {x n-C7H15OH + (1 - x)n-C7H16}, and {x n-C7H15OH + (1 - x)2,2,4-(CH3)(3)C5H9}. For {x n-C7H15OH + (1 - x)n-C8H18, the K-S(E) has been found to be positive at very low mole fractions of n-C7H15OH, and negative at other mole fractions. The values of Deltau and K-S(E) have been fitted to representative equations. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 18]
机译：在正庚醇（n-C7H15OH）和正戊烷（n-C5H12）或正己烷（n-C6H14）或正庚烷（n-C7H16）的二元液体混合物中测量了声速u，或正辛烷（n-C8H18）在T = 303.15 K且在正庚醇和2,2,4-三甲基戊烷（2,2,4-（CH3）（3）C5H9）的二元液体混合物中在T = 293.15 u的值已用于计算这些混合物的声音Deltau的表观超速和等熵压缩率KS。也从K-S的值计算出过量的等熵压缩率K-S（E）。已经发现在{x n-C7H15OH +（1- x）n-C5H12}，{x n-C7H15OH +（1- x）n-C6H14}的整个组成范围内，KS（E）性质均为负。 {x n-C7H15OH +（1- x）n-C7H16}和{x n-C7H15OH +（1- x）2,2,4-（CH3）（3）C5H9}。对于{x n-C7H15OH +（1-x）n-C8H18，发现K-S（E）在n-C7H15OH的摩尔分数非常低时为正，而在其他摩尔分数时为负。 Deltau和K-S（E）的值已拟合到代表性方程式中。 （C）2000 Elsevier Science B.V.保留所有权利。 [参考：18]

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