Study of the Dependence on Temperature and Composition of the Volumic Properties of Ethane-1,2-diol + 2-Methoxyethanol + 1,2-Dimethoxyethane + Water Solvent System and Graphical Representation in the Quaternary Domain

Ulrici, Alessandro; Cocchi, Marina; Foca, Giorgia; Manfredini, Matteo; Manzini, Daniela; Marchetti, Andrea; Sighinolfi, Simona; Tassi, Lorenzo

doi:10.1007/s10953-006-9287-7

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…For quaternary mixtures, as considered in our work, Ulrici et al suggested neglecting additional ternary and quaternary interactions and using a simple expression to estimate the total molar excess volume v (4) E , considering the sum of all possible binary interactions v (2) i , j E : The binary interactions needed in eq can be quantified, as done below, using, e.g., eq .…”

Section: Theorymentioning

confidence: 99%

Impact of Liquid-Phase Volume Changes on Estimating Reaction Rate Parameters: The Homogeneously Catalyzed Hydrolysis of Methyl Formate

Seidel‐Morgenstern

2017

Ind. Eng. Chem. Res.

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The homogeneously catalyzed hydrolysis of methyl formate was studied experimentally in a batch reactor. The kinetics of this reversible liquidphase reaction was quantified by analyzing measured concentration transients in two different ways: (i) neglecting temporal changes of the volume of the reaction mixture, and (ii) considering volume changes caused by the reaction and/or by mixing. Assuming the same structure of the kinetic expression, the reaction rate constants were estimated for both cases. Consistent usage of the obtained constants within the corresponding models provided relative small differences in the predicted concentration transients. Even the most simplified approach, i.e., neglecting volume changes completely, was found to be capable of describing well concentration transients observed in a batch reactor. However, for the specific reaction investigated, the absolute values of the reaction rate constant varied up to 9.4% for the different volume effect scenarios considered.

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Section: Theorymentioning

confidence: 99%

Impact of Liquid-Phase Volume Changes on Estimating Reaction Rate Parameters: The Homogeneously Catalyzed Hydrolysis of Methyl Formate

Seidel‐Morgenstern

2017

Ind. Eng. Chem. Res.

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“…In this context, it is noteworthy that binary mixing data have been used previously to estimate excess volumes of multicomponent mixtures, while neglecting multi-component interactions. 29,30 For our system, such method would clearly achieve negligible excess volumes, given the binary mixing data provided in Figure 1. We would further like to mention that an estimation of excess volumes based on the UNIQUAC model established below is not possible, since a pressure dependence is not considered in this model, as it is commonly the case for liquid systems.…”

Section: ■ Experimental Sectionmentioning

confidence: 89%

Description of Adsorption in Liquid Chromatography under Nonideal Conditions

2018

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A thermodynamically consistent description of binary adsorption in reversed-phase chromatography is presented, accounting for thermodynamic nonidealities in the liquid and adsorbed phases. The investigated system involves the adsorbent Zorbax 300SB-C18, as well as phenetole and 4- tert-butylphenol as solutes and methanol and water as inert components forming the eluent. The description is based on adsorption isotherms, which are a function of the liquid-phase activities, to account for nonidealities in the liquid phase. Liquid-phase activities are calculated with a UNIQUAC model established in this work, based on experimental phase equilibrium data. The binary interaction in the adsorbed phase is described by the adsorbed solution theory, assuming an ideal (ideal adsorbed solution theory) or real (real adsorbed solution theory) adsorbed phase. Implementation of the established adsorption model in a chromatographic code achieves a quantitative description of experimental elution profiles, with feed compositions exploiting the entire miscible region, and involving a broad range of different eluent compositions (methanol/water). The quantitative agreement of the model and experimental data serves as a confirmation of the underlying physical (thermodynamic) concepts and of their applicability to a broad range of operating conditions.

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Measurement and correlation of the (p, ρ, T) behaviour of liquid ethylene glycol at temperatures from (283.3 to 393.1) K and pressures up to 100.1 MPa

Yang

Sampson

Frotscher

et al. 2020

The Journal of Chemical Thermodynamics

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Study of the Dependence on Temperature and Composition of the Volumic Properties of Ethane-1,2-diol + 2-Methoxyethanol + 1,2-Dimethoxyethane + Water Solvent System and Graphical Representation in the Quaternary Domain

Cited by 6 publications

References 35 publications

Impact of Liquid-Phase Volume Changes on Estimating Reaction Rate Parameters: The Homogeneously Catalyzed Hydrolysis of Methyl Formate

Impact of Liquid-Phase Volume Changes on Estimating Reaction Rate Parameters: The Homogeneously Catalyzed Hydrolysis of Methyl Formate

Description of Adsorption in Liquid Chromatography under Nonideal Conditions

Measurement and correlation of the (p, ρ, T) behaviour of liquid ethylene glycol at temperatures from (283.3 to 393.1) K and pressures up to 100.1 MPa

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