Zur Bestimmung von Molekülradien organischer Flüssigkeiten aus Schallgeschwindigkeit und Dichte

Schaaffs, W.

doi:10.1007/bf01340236

Cited by 62 publications

(8 citation statements)

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“…Sound speeds were evaluated on the basis of Jacobson's free length theory [31,32] and Schaaff's collision factor theory [33][34][35]. The details of the theories were discussed in our earlier paper [36].…”

Section: Resultsmentioning

confidence: 99%

Excess volumes, densities, speeds of sound and viscosities of binary systems of diisopropyl ether and acetates at 303.15K

Reddy

Subbaiah

et al. 2010

Journal of Industrial and Engineering Chemistry

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Section: Resultsmentioning

confidence: 99%

Excess volumes, densities, speeds of sound and viscosities of binary systems of diisopropyl ether and acetates at 303.15K

Reddy

Subbaiah

et al. 2010

Journal of Industrial and Engineering Chemistry

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“…In this case, consideration was given to the Jacobson (Free Length Theory) [16] and Schaffs-Nutsch-kuhnkies (Collision Factor Theory) [17][18][19] methods to estimate the isentropic compressibility for the ternary mixture. The Free Length Theory (FLT) estimates the isentropic compressibility of a mixture attending to the free displacement of molecules (Lf) as a main function of temperature (Eq.…”

Section: Ultrasonic Velocity Modellingmentioning

confidence: 99%

“…Although the amount of disposable ultrasonic data has increased in recent years, in what is referred to complex mixtures, the scarce of information is still important, thus the use of mathematical models is essential for both theoretical studies and industrial technology. Into open literature, different methods are available with varying degrees of success (semi empirical mixing rules, associative equilibrium models, equations of state with mixing rules, or statistical mechanical theories) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] although in a whole part, such studies and predictions are related to binary mixtures. Usually, large deviations for predictions of ultrasonic properties are observed when biochemical, polar or selfassociative molecules are involved in multicomponent or partial miscible mixtures, due to the considerable non-ideal behaviour and special aggregation into these complex systems, indeed these facts pose significant challenges.…”

Section: Introductionmentioning

confidence: 99%

Temperature dependence of isentropic compressibilities for the ternary mixture Acetone + Methanol + n-Hexane

Iglesias

Andrade

Marino³

2018

International Journal of Thermodynamics

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In this work, the applicability of Free Length and Collision Factor theories to predict multicomponent isentropic compressibilities is analyzed and compared. To this end, appropriate expansions for ternary mixtures were derived from the original works, and then applied to a mixture containing dislike compounds in terms of functional molecular groups. Excess molar volumes from open literature and new experimental ultrasonic velocities of the mixture acetone+methanol+n-hexane were used to compute the corresponding isentropic compressibilities. A good accuracy was obtained when ternary prediction is attempted in this partially soluble mixture at different temperatures by the Collision Factor theory. These results show the versatility of this model for estimation studies in complex multicomponent mixtures enclosing phase splitting.

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“…Therefore, theoretical study of various methods to evaluate the nonlinearity parameter in multicomponent liquid mixtures at varying physical conditions is important. Tong and Dong [11] calculated the B/A values for pure liquids by using Schaaffs' equation [12,13]. A theoretical calculation of B/A and its excess values for binary mixtures was carried out by Jugan et al [14].…”

Section: Introductionmentioning

confidence: 99%

Estimation of acoustic nonlinearity parameter and molecular characteristics of ternary liquid mixtures at different temperatures

Tripathi

Awasthi

2010

Can. J. Phys.

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The acoustic nonlinearity parameter (B/A) of ternary liquid mixtures of heterocyclic compounds viz. pyridine and quinoline with phenol in benzene has been evaluated at 308.15, 318.15, and 328.15 K by three different methods viz. Tong-Dong method, Beyer's method, and Beyer's method using Tong-Dong coefficients. The molecular interactions in the liquid mixtures are explained on the basis of excess nonlinearity parameter ((B/A) E ). Sehgal's relations for calculating the molecular properties for pure liquids are extended to the ternary liquid mixtures. PACS No: 43.25.Ba Résumé : Le paramètre (B/A) de non linéarité dans les mélanges liquides de composés hétérocycliques, nommément la pyridine et la quinoléine avec du phénol dans le benzène, a été évalué à 308,15, 318,15 et 328,15 par trois méthodes diffé-rentes, les méthodes de Tong-Dong, de Beyer et celle utilisant les coefficients de Tong-Dong. Les interactions moléculaires dans les mélanges liquides sont expliquées sur la base du paramètre de non linéarité excédentaire ((B/A) E ). Nous étendons aux mélanges liquides ternaires les relations de Sehgal pour le calcul des propriétés moléculaires des liquides purs. [Traduit par la Rédaction]

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Zur Bestimmung von Molekülradien organischer Flüssigkeiten aus Schallgeschwindigkeit und Dichte

Cited by 62 publications

References 0 publications

Excess volumes, densities, speeds of sound and viscosities of binary systems of diisopropyl ether and acetates at 303.15K

Excess volumes, densities, speeds of sound and viscosities of binary systems of diisopropyl ether and acetates at 303.15K

Temperature dependence of isentropic compressibilities for the ternary mixture Acetone + Methanol + n-Hexane

Estimation of acoustic nonlinearity parameter and molecular characteristics of ternary liquid mixtures at different temperatures

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