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Citation: LIAO Dan-Kui, MENG Xue-Lin, WU Xiang-Hong, CHEN Xiao-Peng, ZHENG Dan-Xing, TONG Zhang-Fa. Determination of Excess Enthalpies for Binary Systems of α-Pinene+p-Cymene and β-Pinene+p-Cymene[J]. Acta Physico-Chimica Sinica, ;2006, 22(11): 1419-1422. doi: 10.3866/PKU.WHXB20061122 shu

Determination of Excess Enthalpies for Binary Systems of α-Pinene+p-Cymene and β-Pinene+p-Cymene

1.
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China; School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Received Date: 24 April 2006
Available Online: 6 November 2006

The excess enthalpies of α-pinene+p-cymene and β-pinene+p-cymene binary systems were determined at 298.15 K, 308.15 K and 318.15 K and at atmospheric pressure by using a Calvet microcalorimeter (BT2.15). The experimental excess enthalpy data were correlated with Redlich-Kister equation and the standard deviations were all very small. It was found that all the excess enthalpies of these two binary systems were positive in the range of the experimental concentrations and reach their maxima when the mole concentration x1 was about 0.5. The excess enthalpies were larger at the higher mixing temperatures. At the same temperatures, the excess enthalpies of α-pinene+p-cymene system were larger than that of β-pinene+p-cymene.
- α-Pinene;β-Pinene;p-Cymene;Excess enthalpy;Microcalorimeter
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