Thermodynamic Properties of Cyclopentanol + <i>p</i>-Dioxane Mixtures at 25 °C

Anand, Subhash; Grolier, J.-P.E.; Kiyohara, Osamu; Benson, George C.

doi:10.1139/v73-619

Cited by 12 publications

(5 citation statements)

References 9 publications

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“…Densities of the pure liquids are listed in Table I. In general, agreement with literature data (26)(27)(28)(29)(30)(31)(32)(33)(34)(35) is satisfactory. Molar excess volumes as determined via eq 1 are presented in Tables II and III merits several months apart.…”

Section: Resultssupporting

confidence: 82%

Excess volumes of mixtures of oxolane, oxane, 1,3-dioxolane, and 1,4-dioxane with n-alkanes at 298.15, 308.15, and 318.15 K

Inglese¹,

Grolier²,

Wilhelm³

1983

J. Chem. Eng. Data

114

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Molar excess volumes V* have been measured as a function of mole fraction at 288.15, 308.15, and 318.15 K for binary liquid systems of the type cyclic ether (x.,) + n -alkane by using pycnometry and, In three cases, vibrating-tube denslmetry (VTD). The cyclic ethers were oxolane (tetrahydrofuran, C4HaO), oxane (tetrahydropyran, CaH10O), 1,3-dioxolane (1,3-C3Ha02), and 1,4-dloxane (1,4-C4H802); the n -alkanes were -decane and n-tetradecane. VE for 1,4-dloxane + n-heptane was determined for 298.15 K only. All excess volumes are positive. Ve(x4 = 0.5) for any mixture containing an mc-membered cyclic dlether Is considerably larger than for the corresponding mixture (i.e., with the same n-alkane) Involving an mc-membered cyclic monoether.For a given ether, VE shows a pronounced Increase with Increasing chain length of the n -alkane.

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Section: Resultssupporting

confidence: 82%

Excess volumes of mixtures of oxolane, oxane, 1,3-dioxolane, and 1,4-dioxane with n-alkanes at 298.15, 308.15, and 318.15 K

Inglese¹,

Grolier²,

Wilhelm³

1983

J. Chem. Eng. Data

114

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“…This is consistent with the dense packing of 1,3-dioxolane, 1,3-dioxane, and 1,4-dioxane (densities: 1058.66, 1028.69, and 1027.93 kg m −3 , respectively ,, ) and may explain the high Δ(Δ H vap ) value of 1,4-dioxane, which contrasts with its low μ̅. It has been suggested that the interactions between 1,4-dioxane molecules are mainly dispersive and of quadrupolar type . Thus, the significant order in cyclic diethers is modified upon mixing and large and positive H m E and V m E are obtained (Tables and ).…”

Section: Discussionsupporting

confidence: 77%

“…It has been suggested that the interactions between 1,4-dioxane molecules are mainly dispersive and of quadrupolar type. 77 Thus, the significant order in cyclic diethers is modified upon mixing and large and positive H m E and V m E are obtained (Tables 2 and 3). For mixtures with a given alkane, these excess functions change in the same sequence: tetrahydropyran < tetrahydrofuran < 1,4-dioxane < 1,3-dioxolane, in agreement with the relative variation of ∆(∆H vap ) (Table 6).…”

Section: Linear Polyether Systemsmentioning

confidence: 93%

Thermodynamics of Mixtures Containing Oxaalkanes. 4. Random Mixing and Orientational Effects in Ether + Alkane Systems

González

2010

Ind. Eng. Chem. Res.

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Molar excess enthalpies, H m E, and volumes, V m E, of linear or cyclic ether + n-alkane systems have been discussed in terms of the effective dipole moment, μ̅, of the ether, differences of standard enthalpies of vaporization of the ether and of the isomeric alkane, the number and relative positions of the oxygen atoms, the shape of the ether, and the relative size of the mixture compounds. The mentioned solutions have also been studied using the Flory model and the Kirkwood−Buff formalism. Both theories provide consistent results. At 298.15 K, the random mixing hypothesis is a good approximation for mixtures including linear or cyclic monoethers or linear diethers. Orientational effects become stronger in solutions with 2,5,8-trioxanonane, 2,5,8,11-tetraoxadodecane, or 2,5,8,11,14-pentaoxapentadecane. In the case of 1,3-dioxolane mixtures, this type of effect is more relevant than in systems with 1,4-dioxane. This is supported by W-shaped C p,m E curves, large variations of the Flory interaction parameter, X 12, with x 1, the oxaalkane concentration, and local mole fractions of the ether−ether type that are higher than the bulk ones, particularly at lower x 1 values. The latter means that orientational effects are more important at this condition, and this is confirmed by large X 12 variations with x 1 in the region of low x 1 values. At equimolar composition, X 12 values of solutions containing 2,5,8,11-tetraoxadodecane or cyclic ethers remain nearly constant with the number of C atoms of the alkane, which reveals that systems with such oxaalkanes are similar from an interactional point of view. From values of the internal excess energies at constant volume, U V m E, it is shown that interactions between like molecules are usually overestimated. Nevertheless, the general trends observed are independent of the H m E or U V m E data considered. Structural effects are present in mixtures with components that differ largely in size (e.g., dipropyl ether + hexadecane or 2,5,8,11,14-pentaoxapentadecane + hexane).

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“…This is consistent with the dense packing of 1,3-dioxolane, 1,3-dioxane and 1,4-dioxane (densities: 1058.66, 1028.69 and 1027.93 kg m −3 , respectively [53][54][55]), and may explain the high ( H vap ) value of 1,4-dioxane (5.29 kJ mol −1 [48]), which contrasts with its low . It has been suggested that the interactions between 1,4-dioxane molecules are mainly dispersive and of quadrupolar type [56]. Thus, the significant order in cyclic diethers is modified upon mixing and large and positive H E m are obtained.…”

Section: Oxaalkane + N-alkane Mixturesmentioning

confidence: 99%

Thermodynamics of mixtures containing oxaalkanes. 5. Ether+benzene, or +toluene systems

González

Fuenté

Cobos

2011

Fluid Phase Equilibria

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Thermodynamic Properties of Cyclopentanol + p-Dioxane Mixtures at 25 °C

Cited by 12 publications

References 9 publications

Excess volumes of mixtures of oxolane, oxane, 1,3-dioxolane, and 1,4-dioxane with n-alkanes at 298.15, 308.15, and 318.15 K

Excess volumes of mixtures of oxolane, oxane, 1,3-dioxolane, and 1,4-dioxane with n-alkanes at 298.15, 308.15, and 318.15 K

Thermodynamics of Mixtures Containing Oxaalkanes. 4. Random Mixing and Orientational Effects in Ether + Alkane Systems

Thermodynamics of mixtures containing oxaalkanes. 5. Ether+benzene, or +toluene systems

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