Experimental density data and excess molar volumes of coconut biodiesel + n-hexadecane and coconut biodiesel + diesel at different temperatures
Experimental density data and excess molar volumes of coconut biodiesel + n-hexadecane and coconut biodiesel + diesel at different temperatures
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DOI：
10.1590/0104-6632.20140312s00002600
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发表时间：
2014-06
影响因子：
1.2
通讯作者：
F. M. R. Mesquita;F. X. Feitosa;R. S. Santiago-Aguiar;H. B. Sant'ana
中科院分区：
文献类型：
--
作者：
F. M. R. Mesquita;F. X. Feitosa;R. S. Santiago-Aguiar;H. B. Sant'ana
纯组分的密度（正十六烷），纯假组分（椰子生物柴油和柴油）和椰子生物柴油与正十六烷的伪二元混合物在温度293.15、313.15、333.15、353.15和373.15 K和大气压下，在整个组成范围内测量了柴油（或+柴油）的组成。（摩尔分数为0.1至0.9，步长为de 0.1）。使用Anton帕尔SVM 3000粘度密度计测定密度。实验测得的密度值随温度的升高而降低。利用密度实验值计算了拟二元混合物的超额摩尔体积。过量摩尔体积与Redlich-Kister多项式展开式相关。在所研究的两个体系中，过量摩尔体积分别为正值和负值。计算了椰子生物柴油、正十六烷和柴油在无限稀释时的过量分体积。
The density of the pure component (n-hexadecane), pure pseudo-components (coconut biodiesel and diesel) and pseudo-binary mixtures of coconut biodiesel with n-hexadecane (or + diesel) were measured at temperatures 293.15, 313.15, 333.15, 353.15 and 373.15 K and atmospheric pressure, over the entire composition range (mole fractions from 0.1 to 0.9, with a step de 0.1). Densities were determined using an Anton Paar SVM 3000 viscodensimeter. Experimental density values decreased with the increase of the temperature. The excess molar volumes of the pseudo-binary mixtures were calculated by using the experimental values of density. Excess molar volumes were correlated with the Redlich-Kister polynomial expansions. Excess molar volumes show positive and negative values in the two systems studied. Excess partial volumes at infinite dilution were calculated for coconut biodiesel, n-hexadecane and diesel in the mixtures studied.