Measurement and Correlation of the Saturated Vapor Pressure of Vinyltriethoxysilane

Wang, Xinliang; Dong, Hong; Zeng, Zhenghao; Wu, Chuan

doi:10.1007/s10953-014-0286-9

Cited by 10 publications

(10 citation statements)

References 16 publications

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“…Table reports the parameters of A , B , and C for the reduced chi-square value for methyl 4- tert -butylbenzoate. Furthermore, the Clarke–Glew equation (eq ) can also be functional for correlating the experimental vapor pressure data in addition to the Antoine equation . The thermodynamic functions or parameters of the component can be evaluated further by regression of the experimental vapor pressure and temperature data …”

Section: Resultsmentioning

confidence: 99%

“…The normal boiling point for methyl 4- tert -butylbenzoate is also estimated based on different group contribution methods (Supporting Information Table S1), and the values are reported in Table . The estimation methods considered are those of Joback, Constantinou and Gani, , Marrero and Pardillo, and Nannoolal et al The relative deviation in the normal boiling point was calculated with respected to estimated methods and it was found that the Nannoolal et al method gives the lowest relative deviation of 0.69 and 0.71% for the Antoine and Clarke–Glew equations, respectively, and thereby it is preferable for the prediction of the normal boiling point. , …”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the Clarke−Glew equation 16 (eq 2) can also be functional for correlating the experimental vapor pressure data in addition to the Antoine equation. 30 The thermodynamic functions or parameters of the component can be evaluated further by regression of the experimental vapor pressure and temperature data. 31 The parameters include the standard Gibbs energy (the difference in molar Gibbs energy between the gaseous phase, considered as an ideal gas and the liquid phase at the selected reference pressure and temperature) [Δ l g G m 0 (θ)], the standard vaporization enthalpy [Δ l g H m 0 (θ)], and the difference between the heat capacity of the ideal gas and the liquid phase [Δ l θ θ To evaluate the quality of the regressed parameters (Table 3) by Antoine equation and Clarke−Glew equation, the deviation between the experimental and that predicted by the two models has been expressed in terms of their average absolute deviation (AAD), standard deviation (SD), and maximum absolute deviation (MAD) as follows:…”

Section: Resultsmentioning

confidence: 99%

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Measurement and Correlation Studies of the Saturated Vapor Pressure, Density, Refractive Indices, and Viscosity of Methyl 4-tert-Butylbenzoate

2016

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The saturated vapor pressure of methyl 4-tertbutylbenzoate was measured from (1.21 to 34.66) kPa in the temperature range from (398.3 to 492.4) K using a Swietoslawski-type ebulliometer. The experimental data were fitted with the Antoine and Clarke−Glew equations, which yielded Antoine parameters (A = 18.031, B = 7261.445, C = 8.857 K) and standard vaporization enthalpy (Δ l g H m θ (298.15 K) = 57.49 kJ mol −1 ), respectively. The critical properties were estimated on the basis of group contribution method. The acentric factor was calculated using these critical parameters and the saturated vapor pressures with the Antione equation. Furthermore, density, refractive indices, and viscosity of methyl 4tert-butylbenzoate were also measured in the temperature range of 293.15 to 353.15 K. Temperature-dependence correlation equations for the density (second-order polynomial equation) and viscosity (Vogel−Tamman−Fulcher) were proposed. Modified Rackett equation was used with group contribution methods to predict the density of methyl 4-tert-butylbenzoate. Group contributions and group interactions method of Nannoolal et al. were used to predict the viscosity in the temperature range of 293.15 to 353.15 K.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Measurement and Correlation Studies of the Saturated Vapor Pressure, Density, Refractive Indices, and Viscosity of Methyl 4-tert-Butylbenzoate

2016

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“…Furthermore, this close agreement supports our assumption of a monomeric vapor phase which also assures the absence of decomposition in the ( p,T ) experimental conditions usedthe Knudsen method depends on the molar mass of the vapor, as can be seen in eq , while the static method is independent of its molar mass. As it was not possible to get reliable values of the variation of Δ cr,1 g C p ,m o with the temperature using eq , we used eq that has been used in several previous works ,− assuming as approximation that Δ cr,1 g C p ,m o could be considered constant. When accurate experimental sublimation or vaporization vapor pressures are measured over a large temperature range (ca. 50 K), the fit of eq frequently yields a consistent value of Δ cr,1 g C p ,m o (θ). , The fit of eq to the experimental data of p -HBAD yields the result Δ cr g C p ,m o = −(29.1 ± 16.2) J·K –1 ·mol –1 , reported in Table together with the other thermodynamic properties derived from this fit.…”

Section: Resultsmentioning

confidence: 99%

Vapor Pressures and Gibbs Energies of Formation of the Three Hydroxybenzaldehydes

Almeida

Monte

2017

J. Chem. Eng. Data

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This work reports experimental sublimation and vaporization vapor pressures at different temperatures of the three isomers of hydroxybenzaldehyde. A static method based on capacitance diaphragm manometers was used to measure the vapor pressures of both (crystalline and liquid) condensed phases of ortho, meta, and para hydroxybenzaldehydes, through the temperature ranges T = (264.6 to 341.7) K, T = (324.9 to 419.4) K, and T = (334.9 to 429.4) K, respectively. The Knudsen mass-loss effusion technique was also used to determine the vapor pressures of crystalline meta and para isomers in the temperature intervals T = (309.1 to 331.2) K and T = (319.1 to 341.2) K, respectively. The obtained results enabled the determination of the standard molar enthalpies and entropies of sublimation and of vaporization, at chosen reference temperatures, as well as the (p,T) values of the triple point of the compounds studied. The temperatures and enthalpies of fusion were determined from differential scanning calorimetry. The contributions of the formyl group to the sublimation properties of benzaldehydes were determined, and the standard Gibbs energies of formation in condensed and gaseous phases were calculated.

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“…At early times, divisions of groups were coarse and had less consideration about the interactions among groups. Later, more correction terms were proposed and the interactions were taken into account, and then it reflected in the calculation of saturated vapor pressure 14 , enthalpy of formation 15 , enthalpy of evaporation 16,17 , heat capacity 18 , melting point 19 and so on.…”

Section: Introductionmentioning

confidence: 99%

Systematic Verification and Correction of the Group Contribution Method for Estimating Chemical Reaction Heats

Wang¹,

天津大学化工学院²,

Hao³

et al. 2016

Acta Physico-Chimica Sinica

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Reaction heat (Q) is an important parameter in chemical thermodynamics that is widely used in the hazard evaluation and safety design of chemical processes. Reaction heats can be obtained by either calorimetry or estimation. Calorimetry is generally more accurate, but is time-consuming, and sometimes precluded by the experimental conditions. By comparison, estimation techniques are quick and convenient, but are necessarily less accurate. The group contribution method (GCM) is one of the most commonly used estimation techniques. To investigate the accuracy of the estimations and make a primary screening of reaction heats for the industrial application of the GCM, calorimetric measurements of 33 reactions of 11 reaction types, including hydrogenation, reduction, nitration, oxidation, amidation, amination, ester hydrolysis, nitrogen substitution, ring-opening, and esterification, were conducted. The 33 reaction heats were also estimated by the GCM, and were compared with the calorimetric results. The relative errors between calorimetry (Qcalorimetry) and the GCM (QGCM) were also summarized for the different types of reactions. According to the range of relative errors, the reaction types were divided into different groups for calibrating QGCM to Qcalorimetry. Some recommended correction coefficients were proposed to correct QGCM to Qrecommended (Qr) for the different types of reactions, which could be employed in industrial settings where 1404 WANG Rui et al.: Systematic Verification and Correction of the GCM for Estimating Chemical Reaction Heats No.6

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Measurement and Correlation of the Saturated Vapor Pressure of Vinyltriethoxysilane

Cited by 10 publications

References 16 publications

Measurement and Correlation Studies of the Saturated Vapor Pressure, Density, Refractive Indices, and Viscosity of Methyl 4-tert-Butylbenzoate

Measurement and Correlation Studies of the Saturated Vapor Pressure, Density, Refractive Indices, and Viscosity of Methyl 4-tert-Butylbenzoate

Vapor Pressures and Gibbs Energies of Formation of the Three Hydroxybenzaldehydes

Systematic Verification and Correction of the Group Contribution Method for Estimating Chemical Reaction Heats

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