Vapor–liquid equilibrium of aqueous solutions of formaldehyde and methanol

Albert, Michael H.; Coto, Baudilío; Kuhnert, Christian; Peschla, Roger; Maurer, Gerd

doi:10.1002/aic.690460818

Cited by 54 publications

(72 citation statements)

References 14 publications

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“…The gas phase formaldehyde concentrations of Fig. 5 are the ones in the gas stream entering the reactor, and are calculated from the composition of the solution in the saturation column, using the vapour-liquid equilibrium model of developed by the research group of Maurer (Maurer, 1986;Albert, GarcÃ a, Kuhnert, Peschla, & Maurer, 2000), and assuming that the gas leaving the saturation column has reached physical equilibrium with the liquid.…”

Section: Uv-analysis Of Formaldehydementioning

confidence: 99%

“…Di usion coe cients in water were calculated with the Wilke-Chang method (Reid et al, 1988), where the volume of formaldehyde at its normal boiling point was taken form Daubert and Danner (1985) and that of methylene glycol was obtained with the Le Bas method (Reid et al, 1988). The distribution coe cients m F , m MG and m W were calculated with the model of Maurer for vapour-liquid equilibria of aqueous formaldehyde solutions (Maurer, 1986;Albert et al, 2000).…”

Section: Physical Propertiesmentioning

confidence: 99%

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Kinetics and chemical equilibrium of the hydration of formaldehyde

Winkelman

Voorwinde

Ottens

et al. 2002

Chemical Engineering Science

128

145

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Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. AbstractThe reaction rate of the hydration of formaldehyde is obtained from the measured, chemically enhanced absorption rate of formaldehyde gas into water in a stirred cell with a plane gas-liquid interface, and mathematically modelling of the transfer processes. Experiments were performed at the conditions prevailing in industrial formaldehyde absorbers, i.e. at temperatures of 293-333 K and at pH values between 5 and 7. The observed rate constants could be correlated as k h = 2:04 × 105 × e −2936=T s −1 . Using the results, and the dehydration reaction rate constant, obtained previously at similar conditions, the chemical equilibrium constant for the hydration is obtained as K h =e 3769=T −5:494 .

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Section: Uv-analysis Of Formaldehydementioning

confidence: 99%

Section: Physical Propertiesmentioning

confidence: 99%

Kinetics and chemical equilibrium of the hydration of formaldehyde

Winkelman

Voorwinde

Ottens

et al. 2002

Chemical Engineering Science

128

145

View full text Add to dashboard Cite

show abstract

“…In this work, the COSMO-RS model was chosen to calculate the physical interactions of all species using their activity coefficients, while the chemical phenomena were described using K n *. The vapor phase is assumed to behave like a mixture of ideal gases as described in previous publications [2], [5], [7]. The criterion for phase equilibrium can be expressed according to Eq.…”

Section: A Thermodynamic Predicted Modelmentioning

confidence: 99%

“…Based on the early work of Klamt, a conductor-like screening model for real solutions (COSMO-RS) [11] was proposed in 1995, and has been intensively developed over the past decades [12]- [16]. COSMO-RS is a statistical thermodynamics theory based on COSMO polarization charge densities, which overcomes many of the limitations and theoretical shortcomings of dielectric continuum models.…”

Section: Introductionmentioning

confidence: 99%

“…The basic design of such processes requires, for example, a model for the vapor-liquid equilibrium of the chemical reactive system formaldehyde + water + trioxane [1]. A physicochemical model used in the description of vapor-liquid equilibrium in formaldehyde-containing mixtures was originally developed by Maurer [2], and has been continuously updated [1], [3]- [7].…”

Section: Introductionmentioning

confidence: 99%

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Prediction of the Vapor–Liquid Equilibrium of Formaldehyde–Water–Trioxane Ternary System by the Conductor-Like Screening Model for Real Solvents

Liu¹,

Bai²,

Liu³

et al. 2017

IJCEA

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Abstract-In this study, a thermodynamic model was combined with the conductor-like screening model for real solvents (COSMO-RS), coupled with chemical reaction equilibrium and mass balance, for describing the phase behavior and complex chemical equilibrium in the ternary system of formaldehyde-water-trioxane at temperatures between 413 K. New approach for the prediction of vapor-liquid equilibrium of the binary system (TOX + W) and the ternary system (FA+W+TOX) is compared with experimental data and UNIFAC method. The calculated vapor-liquid equilibrium (VLE) result shows good agreement with the experimental data. The COSMO-RS model has proven to be an accurate and effective method for predicting the activity coefficient, and also more reasonable for predicting the thermodynamic properties of formaldehyde-watermethanol reactive fluids.Index Terms-COSMO-RS, modeling, phase equilibrium, formaldehyde aqueous solution, trioxane.

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Indoor Air Pollution Control: Formaldehyde Adsorption by Zeolite Rich Materials

Maria

Grutzeck

2006

Ceramic Transactions Series

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Vapor–liquid equilibrium of aqueous solutions of formaldehyde and methanol

Cited by 54 publications

References 14 publications

Kinetics and chemical equilibrium of the hydration of formaldehyde

Kinetics and chemical equilibrium of the hydration of formaldehyde

Prediction of the Vapor–Liquid Equilibrium of Formaldehyde–Water–Trioxane Ternary System by the Conductor-Like Screening Model for Real Solvents

Indoor Air Pollution Control: Formaldehyde Adsorption by Zeolite Rich Materials

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