Speed of sound in liquid cyclic alkanes at temperatures between (283 and 343) K and pressures up to 20 MPa |
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Authors: | Toshiharu Takagi Taro Sakura |
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Affiliation: | a Department of Chemistry, Faculty of Engineering and Design, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan;b Departamento de Quimica Centro de Quimica Fina e Biotecnologia, Faculdade de Ciencias e Tecnologia, Universidade Nova de Lisboa, 2825-114 Caparica, Portugal |
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Abstract: | The speed of sound in liquid cyclopentane, cyclohexane, methylcyclopentane and methylcyclohexane were measured, with a sing-around technique operated at a frequency of 2 MHz, at temperatures from (283 to 343) K and pressures up to 20 MPa with an estimated error of less than ± 0.2 per cent in the high-density region. From these measurements the densities and isobaric and isentropic compressibilities of each compound were estimated. The behaviour on the temperature and pressure in these quantities is discussed based on the difference in molecular shape between cyclic and normal alkanes with those for n-alkanes. |
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Keywords: | cyclicalkanes speed of sound high pressure density isothermal compressibility |
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