Study of the equilibrium properties of hydrocarbons on the saturation line by an acoustic method

Zotov, V. V.; Kireev, B. N.; Neruchev, Yu. A.

doi:10.1007/bf00858930

Cited by 9 publications

(15 citation statements)

References 5 publications

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“…Measurements were made using a nearly constant volume container with an internal volume of 28.5193 ( 0.003 cm 3 . These data show good agreement (within 0.2%) with the data derived by Akhundov and Abdullaev, 60, 63 Kashiwagi et al, 53 65 Magee and Bruno, 58 Zotov et al, 66 Okhotin et al, 67 Hales and Townsend, 68 Chirico and Steele, 69 Rudenko et al, 70 Shraiber and Pechenyuk, 71 and Francis. 72 There is satisfactory agreement (within 2%) between the data reported by Polikhronidi et al 64 …”

Section: Available Experimental Datasupporting

confidence: 78%

Equation of State and Thermodynamic Properties of Pure Toluene and Dilute Aqueous Toluene Solutions in the Critical and Supercritical Regions

Kiselev¹,

Ely²,

Abdulagatov³

et al. 2001

Ind. Eng. Chem. Res.

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In this paper, we report new PVTx measurements for water + toluene binary mixtures at 11 near-critical and supercritical isotherms T ) 623, 627, 629, 631, 633, 643, 645, 647, 649, 651, and 673 K and pressures up to 39 MPa at a fixed concentration of x ) 0.0287 mole fraction of toluene. Using these PVTx data together with data obtained earlier by other authors, we developed a crossover Helmholtz free-energy model (CREOS) for pure toluene and dilute aqueous toluene solutions in a wide range of the parameters of state around the vapor-liquid critical points. In the temperature range 593 K e T e 680 K and density range 100 kg‚m -3 e F e 500 kg‚m -3 , the CREOS reproduces the PVT data for pure toluene with an average absolute deviation (AAD) of about 0.5%, the C P data with an AAD of about 1%, and the sound velocity data with an AAD of about 2.6%. In water + toluene mixtures, the CREOS yields an adequate description of all available experimental data in the region bounded by 0.35F c (x) e F e 1.65F c (x) and 0.98T c (x) e T e 1.15T c (x) at x e 0.04 mole fraction of toluene. The possibility of extrapolating the CREOS model to lower temperatures, 0.93T c e T eT c , and higher densities and concentrations, up to F ) 2F c and x ) 0.12, is also discussed.

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Section: Available Experimental Datasupporting

confidence: 78%

Equation of State and Thermodynamic Properties of Pure Toluene and Dilute Aqueous Toluene Solutions in the Critical and Supercritical Regions

Kiselev¹,

Ely²,

Abdulagatov³

et al. 2001

Ind. Eng. Chem. Res.

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“…The exception is provided by the results of [4,7] for all investigated alkenes for which the deviations are systematic. With respect to the group of mutually consistent data of [3,5,6,[8][9][10][11][12][13], the measurement results of [4] are overstated, and those of [7] -understated, by 1-2% and 1-3%, respectively. Obviously, the accuracy of these data is not high.…”

Section: Introductionmentioning

confidence: 99%

Sound Velocity in Liquid 1-Alkenes

2005

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The method of echo pulse overlap is used to investigate the sound velocity in liquid alkenes from 1-hexene to 1-hexadecene with an even number of atoms per molecule at pressures up to 100 MPa in the temperature range from 303 to 433 K. The maximal error of measurements is 0.1%. It is for the first time that experimental data on the sound velocity in liquid 1-dodecene, 1-tetradecene, and 1-hexadecene are obtained. The correlation between the sound velocity and molecular structure of alkenes is studied. The parameters of correlation equations are calculated.

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“…To test the proposed approach, a set of data for different classes of hydrocarbons with 6 carbon atoms was used: n-hexane (Neruchev et al, 2005), n-hexene (Zotov et al, 1975), 1-hexanol (Zotov et al, 1968), cyclohexane (Zotov et al, 1995), cyclohexene (Zotov et al, 1995), and benzene (Neruchev et al, 2005). All these measurements were done in one laboratory, namely, in the Laboratory of Molecular Acoustics at Kursk State University (formerly Kursk State Pedagogical University and Kursk State Pedagogical Institute), which ensures a certain uniformity of the applied methods by providing the equipment and hence, accuracy for this comparative analysis.…”

Section: Resultsmentioning

confidence: 99%

Can DIPPR Database be Used for an Estimation of the Speed of Sound? A Case Study of Liquid Hydrocarbons

Postnikov

2016

Archives of Acoustics

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The paper analyses a possibility of utilising the information which is contained in DIPPR database for a calculation of the speed of sound, which is absent there. As an example, liquid hydrocarbons are considered: n-hexane, 1-hexene, cyclohexane, cyclohexene, benzene, and 1-hexanols, as well as representatives of n-alkanes with various hydrocarbon chain lengths. It is shown that the Brelvi-O'Connell correlation for the reduced bulk modulus, supplied with the correlations for the internal pressure at the normal boiling temperature, results in the values having accuracy comparable with other DIPPR data for the region below the boiling point bounded by the values of the reduced density around ρr ≈ 3.5. The source of errors originated from the Brelvi-O'Connell correlation for larger reduced densities is discussed.

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Study of the equilibrium properties of hydrocarbons on the saturation line by an acoustic method

Cited by 9 publications

References 5 publications

Equation of State and Thermodynamic Properties of Pure Toluene and Dilute Aqueous Toluene Solutions in the Critical and Supercritical Regions

Equation of State and Thermodynamic Properties of Pure Toluene and Dilute Aqueous Toluene Solutions in the Critical and Supercritical Regions

Sound Velocity in Liquid 1-Alkenes

Can DIPPR Database be Used for an Estimation of the Speed of Sound? A Case Study of Liquid Hydrocarbons

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