The Principle of Congruence

Koh, Sang-Bum; Williamson, Arthur

doi:10.1016/0300-9467(80)85018-0

Cited by 7 publications

(2 citation statements)

References 66 publications

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“…Bro¨nsted's Principle of Congruence (1) states that a mixture of two normal alkanes of carbon numbers n 2 and n 3 , is congruent with an n-alkane of carbon number n = Xn 2 + (1 − X )n 3 where X is the mole fraction of the alkane with carbon number n 2 in the mixture of n-alkanes. The congruent mixture with carbon number n and the corresponding pure alkane are predicted by the Principle to have equal values of molar properties such as V m , H m , and C p, m .…”

Section: Introductionmentioning

confidence: 99%

“…Two similar tests of Bro¨nsted's Principle of Congruence have been applied: (1), at x = 0.5, V E m and C E p, m were plotted against the average alkane carbon number n = Xn2 + (1 − x)n 3 ; these values were consistent, as required by the Principle with those obtained from a mixture of A with a pure alkane of carbon number n = n ; (2), V E m and C E p, m for (A + n-alkane mixtures of mole fraction X ) were successfully compared, through the x range, with the V E m and C E p, m for (A + pure alkane) interpolated from literature values to the n corresponding to the present X. The success of the Principle in the case of V E m and C E…”

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confidence: 99%

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Application of Brönsted’s principle of congruence toVEandCEpof (cyclohexane or chlorobenzene or 1-chloronaphthalene + ann-alkane + anothern-alkane)

Bendiab

Roux-Desgranges

Roux

et al. 1995

The Journal of Chemical Thermodynamics

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Application of Brönsted’s principle of congruence toVEandCEpof (cyclohexane or chlorobenzene or 1-chloronaphthalene + ann-alkane + anothern-alkane)

Bendiab

Roux-Desgranges

Roux

et al. 1995

The Journal of Chemical Thermodynamics

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Prediction of the thermal conductivity of liquids and liquid mixtures including crude oil fractions

Teja

Tarlneu

1988

Can J Chem Eng

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A new method based on the Effective Carbon Number is presented for the prediction of the thermal conductivity of liquids and liquid mixtures. The Effective Carbon Number for each substance of interest can be calculated from its thermal conductivity at a reduced temperature of 0.6. The thermal conductivities of isoalkanes, cycloalkanes, aromatics, alkanes, carboxylic acids, ketones, esters and aldehydes over a range of temperatures were predicted using this method and the results were compared with experimental values. The thermal conductivities of defined mixtures were also predicted using a quadratic mixing rule for the Effective Carbon Number. Lastly, the thermal conductivities o f undefined mixtures such as crude oil fractions were calculated by treating each fraction as a single pseudocomponent. In all cases studied, calculated results compared favorably with experimental values.Une nouvelle methode bade sur le nombre de carbone efficace est prCsentCe pour la prediction de la conductivitk thermique de liquides et de melanges liquides. Le nombre de carbone efficace pour chaque substance revCtant un inter& peut Stre calculi ? i partir de sa conductivitC thermique a une tempkrature reduite de 0,6. Les conductivites thermiques des isoalkanes, des cycloalkanes, des aromatiques, des alkanes, des acides carboxyliques, des &tones, des esters et des aldehydes sur une large gamme de temperatures, ont CtC prtdits grlce B cette mtthode et les risultats ont CtC compares aux valeurs experimentales. Les conductivitis thermiques des mklanges dCfinis ont Cgalement CtC predites a I'aide d'une rkgle de melange quadratique pour le nombre de carbone efficace. Enfin, les conductivites thermiques de melanges non definis tels que les fractions de pitrole brut ont Cte calculees en traitant chaque fraction comme un pseudo-composant unique. Dans tous les cas CtudiCs, les rCsultats calculks se comparent favorablement aux valeurs experimentales Keywords: thermal conductivity prediction, liquid mixture conductivities. crude oil fraction conductivities.he thermal conductivity is an important property in

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Excess molar enthalpies and excess molar volumes for three- and four-component n-alkane mixtures simulating (n-hexane + n-hexadecane)

Marsh

Organ

1985

The Journal of Chemical Thermodynamics

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The Principle of Congruence

Cited by 7 publications

References 66 publications

Application of Brönsted’s principle of congruence toVEandCEpof (cyclohexane or chlorobenzene or 1-chloronaphthalene + ann-alkane + anothern-alkane)

Application of Brönsted’s principle of congruence toVEandCEpof (cyclohexane or chlorobenzene or 1-chloronaphthalene + ann-alkane + anothern-alkane)

Prediction of the thermal conductivity of liquids and liquid mixtures including crude oil fractions

Excess molar enthalpies and excess molar volumes for three- and four-component n-alkane mixtures simulating (n-hexane + n-hexadecane)

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