Density, excess molar volume, and COSMO-RS study of reactive aqueous solutions containing formaldehyde

Bai, Zhenmin; Liu, Huihong; Liu, Yansheng; Fu, Yi-Dong; Zhao, Jun; Pu, Xinyun

doi:10.1016/j.fluid.2018.07.015

Cited by 7 publications

(7 citation statements)

References 19 publications

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“…Density of solutions of (formaldehyde + water). Experimental data: () Lileev et al, 27 () Soboleva et al, 10 () Skelding and Ashbolt, 26 () Datar, 32 () Walker, 3 () Bai et al, 22 () this work. () model…”

Section: Resultsmentioning

confidence: 92%

“…Deviations of the model of this work from the available experimental densities of solutions containing formaldehyde, water, and alcohols. Experimental data: () Auerbach and Barschall, 29 () Lileev et al, 27 () Soboleva et al, 10 () Skelding and Ashbolt, 26 () Walker, 3 () Natta and Baccaredda, 11 () Datar, 32 () Bai et al, 22 () Ullmann's Encyclopedia of Industrial Chemistry , 25 () Kirk‐Othmer Encyclopedia of Chemical Technology , 30 () Homer, 12 () this work…”

Section: Resultsmentioning

confidence: 99%

“…The most recent model of the density of formaldehyde‐containing solutions stems from Bai et al 22 It is also based on knowledge of the true species distribution and relies heavily on COSMO‐RS 23,24 calculations, which makes it complicated to use. This complexity does, however, not pay off, as the accuracy of the model is even slightly worse than that of other simple empirical models, such as the model of Winkelman and Beenackers 9 .…”

Section: Introductionmentioning

confidence: 99%

“…This complexity does, however, not pay off, as the accuracy of the model is even slightly worse than that of other simple empirical models, such as the model of Winkelman and Beenackers 9 . The model of Bai et al 22 was therefore not further considered in this work.…”

Section: Introductionmentioning

confidence: 99%

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Density of solutions of formaldehyde in water and alcohols

2022

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Formaldehyde is an important chemical that is mostly handled in aqueous solutions, which generally also contain methanol; furthermore, also solutions of formaldehyde in other alcohols are used. The density of these solutions is an important thermophysical property. The available models of the density of formaldehyde‐containing solutions, however, all have shortcomings, such as a poor accuracy or a limited range of applicability. Therefore, in the present work, a new model of the density in systems of the type (formaldehyde + water + alcohol) was developed. The alcohols that are presently included in the new model are methanol, 1‐propanol, and isoprenol; an extension to other alcohols is straightforward. The model was developed using literature data and extensive new density data measured in this work covering binary, ternary, and quarternary solutions of formaldehyde in water, methanol, 1‐propanol, and isoprenol at temperatures of 283−333 K and formaldehyde concentrations of 0.06 − 0.30 g g−1.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Density of solutions of formaldehyde in water and alcohols

2022

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“…Therefore, reliable models have been developed by Maurer and co‐workers to explicitly take into account both intermolecular forces and chemical Reactions (1) and (2) to successfully describe the vapor–liquid equilibria (VLE) of aqueous formaldehyde mixtures (HCHO–H 2 O) . As new and reliable data for the system (HCHO–H 2 O) became available, these models have been continuously updated …”

Section: Introductionmentioning

confidence: 99%

Vapor–liquid and chemical equilibria model for formaldehyde–trioxane–sulfuric acid–water mixtures

Jiang

Zhang

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Trioxane (C 3 H 6 O 3 ) is industrially produced from aqueous formaldehyde (HCHO) solutions through catalytic distillation catalyzed by sulfuric acid (H 2 SO 4 ). Optimizing industrial process of the synthesis and developing new catalysts require a reliableCONCLUSIONS: The prediction results uncover that, in addition to its ability to accelerate the reaction, the catalyst H 2 SO 4 has strong abilities to increase the activity of 'real' reactant for trioxane synthesis and to promote the phase separation that is very important for drastically increasing the yield of trioxane, reducing the energy requirement for the trioxane synthesis, and decreasing the formation of the by-product formic acid. EXPERIMENTAL MaterialsThe reagents and components along with their supplier and purity are shown in Table 1. Aqueous solutions of formaldehyde wileyonlinelibrary.com/jctb

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Experimental results for the vapor–liquid equilibria of (formaldehyde + 1,3,5-trioxane + methanol + salt + water) systems and comparison with predictions

Zhang

et al. 2021

Chinese Journal of Chemical Engineering

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Density, excess molar volume, and COSMO-RS study of reactive aqueous solutions containing formaldehyde

Cited by 7 publications

References 19 publications

Density of solutions of formaldehyde in water and alcohols

Density of solutions of formaldehyde in water and alcohols

Vapor–liquid and chemical equilibria model for formaldehyde–trioxane–sulfuric acid–water mixtures

Experimental results for the vapor–liquid equilibria of (formaldehyde + 1,3,5-trioxane + methanol + salt + water) systems and comparison with predictions

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