Excess molar volumes of cyclohexanone with n-, sec-, or tert-butylbenzene: Application of the PFP theory and graph-theoretical approach

No presente estudo, dados experimentais de volume molar excesso ( ) de soluções líquidas binárias de metil terc butl éter (MTBE) + metanol, ou + etanol, ou + 1-propanol, ou + 2-propanol, ou + 1-butanol, ou + 1-pentanol, ou + 1-hexanol foram usados para testar a aplicabilidade da Teoria Prigogine-Flory-Patterson (PFP Theory), como função da composição a diferentes temperaturas e pressão atmosférica. De acordo com o modelo, a contribuição interacional é a mais importante para descrever o comportamento do . Foi observado que a Teoria PFP reproduz os dados experimentais usando apenas um parâmetro ajustável. Para todos os sistemas estudados foi obtida uma boa concordância entre os resultados experimentais e a Teoria.

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Thermophysical properties of binary blends of cyclohexane with some esters

Journal of the Serbian Chemical Society ◽

10.2298/jsc160315075p ◽

2017 ◽

Vol 82 (2) ◽

pp. 189-202

Author(s):

Rajendra Pradhan ◽

Biswajit Sinha

Keyword(s):

Methyl Acetate ◽

Excess Molar Volumes ◽

Partial Molar Volumes ◽

Volume Changes ◽

Pfp Theory ◽

Excess Isentropic Compressibilities ◽

Binary Blends ◽

Molar Volumes ◽

Derived Properties ◽

Robinson Equation

From the densities (?) and viscosities (?) measured for three binary blends consisting of methyl acetate (MA), ethyl acetate (EA) and methyl salicylate (MS) over the entire composition range with cyclohexane (CH) at 298.15?318.15 K under atmospheric pressure, the excess molar volumes (VEm ) and excess viscosities (?E) were derived. In addition, the excess isentropic compressibilities (KEs ) excess intermolecular free lengths (LEf) and excess molar refractions (R Em) were derived from measured ultrasonic speeds of sound (u) and refractive indices (nD) for the binary blends at 298.15 K. Various derived properties are discussed in terms of molecular interactions and structural effects. Partial molar volumes ( 0 Vm,1 and 0 Vm,2 ) and excess partial molar volumes ( 0,E Vm,1 and 0,E Vm,2 ) at infinite dilution are also discussed in terms of volume changes in the blends. Furthermore, the excess molar volumes (V Em ) and viscosities (?) of the blends were correlated with the Prigogine?Flory?Paterson (PFP) theory and the Peng?Robinson Equation of State (PR-EOS).

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Thermophysical properties of binary mixtures of N,N-dimethylformamide with three cyclic ethers

Journal of the Serbian Chemical Society ◽

10.2298/jsc121210031s ◽

2013 ◽

Vol 78 (9) ◽

pp. 1443-1460 ◽

Cited By ~ 5

Author(s):

Biswajit Sinha ◽

Rajendra Pradhan ◽

Sanjoy Saha ◽

Dhiraj Brahman ◽

Abhijit Sarkar

Keyword(s):

Ambient Temperature ◽

Binary Mixtures ◽

Atmospheric Pressure ◽

Excess Molar Volumes ◽

Partial Molar Volumes ◽

Excess Properties ◽

Pfp Theory ◽

Liquid Component ◽

Molar Volumes ◽

Excess Partial Molar Volumes

Densities and viscosities of the binary mixtures consisting of tetrahydrofuran (THF), 1,3-dioxolane (1,3-DO) and 1,4-dioxane (1,4-DO) with N,N-dimethylformamide (DMF) over the entire range of composition were measured at temperatures 298.15, 308.15 and 318.15 K and at atmospheric pressure. Ultrasonic speeds of sound of these binary mixtures were measured at ambient temperature and atmospheric pressure (T = 298.15 K and P = 1.01?105 Pa). The various experimental data were utilized to derive excess molar volumes (VmE), excess viscosities (?E), and excess isentropic compressibilities (?sE). Using the excess molar volumes (VmE), excess partial molar volumes (and ) and excess partial molar volumes at infinite dilution (and ) of each liquid component in the mixtures were derived and discussed. Excess molar volumes (VmE) as a function of composition at ambient temperature and atmospheric pressure were used further to test the applicability of the Prigogine-Flory-Patterson (PFP) theory to the experimental binaries. The excess properties were found to be either negative or positive depending on the nature of molecular interactions and structural effects of liquid mixtures. Em,1V Em,2VE0,m,1VE0,m,2V.

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Systems Information Management: Graph Theoretical Approach

SSRN Electronic Journal ◽

10.2139/ssrn.986661 ◽

2003 ◽

Author(s):

Tugrul Temel

Keyword(s):

Information Management ◽

Theoretical Approach ◽

Graph Theoretical Approach

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Excess volumes and refractive indices in the benzene-tert-amyl methyl ether and cyclohexane-tert-amyl methyl ether systems at 298.15 K

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19872839 ◽

1987 ◽

Vol 52 (12) ◽

pp. 2839-2843 ◽

Cited By ~ 18

Author(s):

Jan Linek

Keyword(s):

Methyl Ether ◽

Excess Molar Volumes ◽

Excess Volumes ◽

Refractive Indices ◽

Molar Volumes ◽

Vibrating Tube Densimeter ◽

Ether System

Excess molar volumes in the benzene-tert-amyl methyl ether and cyclohexane-tert-amyl methyl ether systems were measured by a vibrating-tube densimeter at 298.15 K and compared with the data for the methanol-tert-amyl methyl ether system determined previously. Besides, the refractive indices in both the systems were measured at the same temperature.

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Excess molar volumes of binary mixtures of acetic acid and propionic acid with some members of homologous series of alkanes

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19910736 ◽

1991 ◽

Vol 56 (4) ◽

pp. 736-744 ◽

Cited By ~ 11

Author(s):

Ondřej Drábek ◽

Ivan Cibulka

Keyword(s):

Acetic Acid ◽

Propionic Acid ◽

Alkyl Chain ◽

Excess Molar Volumes ◽

Liquid Mixtures ◽

Entire Concentration Range ◽

Molar Volumes ◽

Binary Liquid ◽

Alkane Molecule ◽

Increasing Temperature

Excess molar volumes of binary liquid mixtures of (acetic or propionic acid = hexane) at 25 and 35°C, and (acetic or propionic acid + heptane or octane) and (acetic acid + dodecane) at 25°C, measured with a tilting dilution dilatometer, are reported. The excess volumes are positive over the entire concentration range for all mixtures and increase with increasing length of an alkane molecule, decrease with increasing of the alkyl chain in a molecule of carboxylic acid, and increase with increasing temperature.

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