Temperature Dependence of the Excess Molar Heat Capacities for Alcohol−Alkane Mixtures. Experimental Testing of the Predictions from a Two-State Model

Cerdeiriña, Claudio A.; Tovar, Clara A.; Carballo, E.; Romanı́, Luis; Delgado, MCarmen Guerrero; Torres, Luis A.; Costas, Miguel

doi:10.1021/jp0123278

Cited by 51 publications

(48 citation statements)

References 20 publications

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“…13 Our present results are in agreement with reference, 12 where the effect of the physical action on the excess enthalpy values is negative but the effect of the chemical action on the values is positive.…”

Section: Excess Thermodynamic Functions Of the Azeotropesupporting

confidence: 93%

Measurements of the Heat Capacity of an Azeotropic Mixture of Water and n‐Butanol from 78 to 320 K

2005

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Molar heat capacities of n-butanol and the azeotropic mixture in the binary system [water (x＝0.716) plus n-butanol (x＝0.284)] were measured with an adiabatic calorimeter in a temperature range from 78 to 320 K. The functions of the heat capacity with respect to thermodynamic temperature were established for the azeotropic mixture. A glass transition was observed at (111.9±1.2) K. The phase transitions took place at (179.26±0.77) and (269.69±0.14) K corresponding to the solid-liquid phase transitions of n-butanol and water, respectively. The phase-transition enthalpy and entropy of water were calculated. A thermodynamic function of excess molar heat capacity with respect to temperature was established, which took account of physical mixing, destructions of self-association and cross-association for n-butanol and water, respectively. The thermodynamic functions and the excess thermodynamic ones of the binary systems relative to 298.15 K were derived based on the relationships of the thermodynamic functions and the function of the measured heat capacity and the calculated excess heat capacity with respect to temperature.

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Section: Excess Thermodynamic Functions Of the Azeotropesupporting

confidence: 93%

Measurements of the Heat Capacity of an Azeotropic Mixture of Water and n‐Butanol from 78 to 320 K

2005

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“…This knowledge can be used to develop models and theories about the mixtures behavior. In the last years there have been several efforts to develop models for excess properties such as enthalpy [1][2][3][4][5][6] and heat capacity [2,[7][8][9][10] . Also, it is worth to mention the association models [1,4,[11][12][13] and the group contribution methods [14][15][16][17] for the molar volume.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Densities and viscosities of binary mixtures of n-decane+1-pentanol, +1-hexanol, +1-heptanol at temperatures from 293.15 to 363.15K and atmospheric pressure

Estrada-Baltazar

Bravo-Sánchez

Iglesias‐Silva

et al. 2015

Chinese Journal of Chemical Engineering

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“…23 The data of the excess molar heat capacities of the obtained nanofluid are all positive between 290 and 340 K as shown in Figure 7. The positive E ,m p C data demonstrate that interactions between β-FeOOH and the liquid are formed, which would be the weak bonding between Fe and N atoms.…”

Section: Heat Capacity Of the Nanofluidmentioning

confidence: 85%

Novel Synthesis of β‐FeOOH Nanofluid and Determination of Its Heat Capacity by an Adiabatic Calorimeter

Nan¹,

Zhang

et al. 2009

Chin. J. Chem.

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A novel and facile method for preparation of stable nanofluid is introduced, in which FeCl 3 •6H 2 O and urea were used as reactants without any surfactants. The obtained solid sample was proved to be β-FeOOH by XRD technology and spindle-shaped by TEM technology. The coexisting NH 3 molecules may be the main reason for the stable nanofluid. The weak bonding between nitrogen and iron atoms would be formed. The investigation on the excess heat capacity of the obtained nanofluid sustains this opinion. The heat capacities of the obtained β-FeOOH particles and the nanofluid were determined by an adiabatic calorimeter. And these obtained results will help the applications of β-FeOOH and the nanofluid to industry, and the establishment of the model of thermal conductivity of nanofluid. The thermodynamic properties of the obtained β-FeOOH particles and the nanofluid were calculated based on the obtained functions of heat capacity with respective to thermodynamic temperature and the relationships between the thermodynamic properties.

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Temperature Dependence of the Excess Molar Heat Capacities for Alcohol−Alkane Mixtures. Experimental Testing of the Predictions from a Two-State Model

Cited by 51 publications

References 20 publications

Measurements of the Heat Capacity of an Azeotropic Mixture of Water and n‐Butanol from 78 to 320 K

Measurements of the Heat Capacity of an Azeotropic Mixture of Water and n‐Butanol from 78 to 320 K

Densities and viscosities of binary mixtures of n-decane+1-pentanol, +1-hexanol, +1-heptanol at temperatures from 293.15 to 363.15K and atmospheric pressure

Novel Synthesis of β‐FeOOH Nanofluid and Determination of Its Heat Capacity by an Adiabatic Calorimeter

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