Solid–liquid equilibria measurements for binary systems comprising (butyric acid+propionic or pentanoic acid) and (heptanoic acid+propionic or butyric or pentanoic or hexanoic acid)

Tadie, M.; Bahadur, Indra; Reddy, Pramod; Ngema, Peterson Thokozani; Naidoo, Paramespri; Deenadayalu, Nirmala; Ramjugernath, Deresh

doi:10.1016/j.jct.2012.09.019

Cited by 15 publications

(5 citation statements)

References 16 publications

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“…Fractional crystallization provides a platform for larger quantities of material to be separated into fewer fractions compared with other methods such as chromatography. − Furthermore, fractional crystallization provides a much lower energy demand as opposed to an energy-intensive thermal separation method such as distillation. Hence, it is accepted as an appropriate economic approach for an industrial scale .…”

Section: Introductionmentioning

confidence: 99%

Separation and Solubility of Cis and Trans Isomers in Nanostructured Double-Decker Silsequioxanes

2014

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A fractional crystallization method was used to separate the cis and trans isomers of three double-decker silsesquioxanes (DDSQs) with an aminophenyl moiety in a THF + hexanes solvent mixture. The experimental solubilities were fitted to the Schröder–van Laar equation with activity coefficients determined using the NRTL model by adjusting the binary interaction parameters. The ability to separate these cis and trans isomers was affected by the regioisomer (m- or p-aminophenyl) and the R moiety (cyclohexyl or methyl) coupled via silicon. For a given DDSQ compound, the variances between the solubilities of the cis and trans isomers depend on differences in thermal properties (Schröder–van Laar). Cis isomers were 33 times more soluble than trans isomers for p-aminophenyl (R = methyl) and 22 times more soluble for the analogous m-aminophenyl in a solution of THF and hexanes. For a more sterically hindered m-aminophenyl (R = cyclohexyl), the cis isomers were only 3.5 times more soluble, and the overall solubility was also the lowest. The magnitude of the binary interaction between DDSQ and nonsolvent (hexanes) was used to explain how quickly the solubility decreased as hexanes were added. The solubilities of the two m-aminophenyl structures decreased at similar rates, while the solubility of the p-aminophenyl structure decreased at a much lower rate since the magnitude of the binary interaction between p-aminophenyl and hexanes is smaller.

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Section: Introductionmentioning

confidence: 99%

Separation and Solubility of Cis and Trans Isomers in Nanostructured Double-Decker Silsequioxanes

2014

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“…This approach was previously applied to diesels and crude oils, [28,29] to fatty acids, [30] fatty acid methyl esters, 18 fatty acid ethyl esters [21,27,31]and for biodiesel behavior at low temperatures. [32,33] Equation 1 is a simplified form of the equation generally used to describe the solidliquid equilibrium [27] (1)…”

Section: Modellingmentioning

confidence: 99%

“…These properties are M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 closely monitored to ensure the operation without problem in cold climates [4]. Beyond the cold flow properties the knowledge of biodiesel and its compounds behaviour under low temperatures are interesting to development of purification and/or separation processes and equipment design [18], as well as the knowledge are necessary to help to looking for compounds that can be employed to improve this properties [19,20].…”

Section: Introductionmentioning

confidence: 99%

Binary mixtures of fatty acid ethyl esters: Solid-liquid equilibrium

Boros

Batista

Coutinho

et al. 2016

Fluid Phase Equilibria

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“…Moreover, the behavior of the solid-liquid equilibrium (SLE) in mixtures composed of organic compounds is of fundamental importance for understanding the thermodynamic behavior of such systems and in phase equilibrium calculations, they are required to predict stages and their compositions in various industrial processes and operations [7,9].…”

Section: Introductionmentioning

confidence: 99%

Binary solid–liquid equilibrium systems containing fatty acids, fatty alcohols and triolein by differential scanning calorimetry

Matos

Costa

Meirelles

et al. 2015

Fluid Phase Equilibria

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Solid–liquid equilibria measurements for binary systems comprising (butyric acid+propionic or pentanoic acid) and (heptanoic acid+propionic or butyric or pentanoic or hexanoic acid)

Cited by 15 publications

References 16 publications

Separation and Solubility of Cis and Trans Isomers in Nanostructured Double-Decker Silsequioxanes

Separation and Solubility of Cis and Trans Isomers in Nanostructured Double-Decker Silsequioxanes

Binary mixtures of fatty acid ethyl esters: Solid-liquid equilibrium

Binary solid–liquid equilibrium systems containing fatty acids, fatty alcohols and triolein by differential scanning calorimetry

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