Recommended Liquid–Liquid Equilibrium Data. Part 1. Binary Alkane–Water Systems

Ma̧czyński, Andrzej; Wiśniewska-Gocłowska, Barbara; Góral, Marian

doi:10.1063/1.1643922

Cited by 100 publications

(99 citation statements)

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“…6. Literature experimental data 33 for liquid-liquid solubility in the temperature-mole fraction (T -x 2 ) plane for the water-hexane system; note that x 2 denotes the mole fraction of solute. curves were obtained on fixing T and calculating ρ 1 by solving (B4).…”

Section: Patterns Of Solubilitymentioning

confidence: 99%

Water anomalous thermodynamics, attraction, repulsion, and hydrophobic hydration

Cerdeiriña

Debenedetti

2016

The Journal of Chemical Physics

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A model composed of van der Waals-like and hydrogen bonding contributions that simulates the low-temperature anomalous thermodynamics of pure water while exhibiting a second, liquid-liquid critical point [P. H. Poole et al., Phys. Rev. Lett. 73, 1632 (1994)] is extended to dilute solutions of nonionic species. Critical lines emanating from such second critical point are calculated. While one infers that the smallness of the water molecule may be a relevant factor for those critical lines to move towards experimentally accessible regions, attention is mainly focused on the picture our model draws for the hydration thermodynamics of purely hydrophobic and amphiphilic non-electrolyte solutes. We first focus on differentiating solvation at constant volume from the corresponding isobaric process. Both processes provide the same viewpoint for the low solubility of hydrophobic solutes: it originates from the combination of weak solute-solvent attractive interactions and the specific excluded-volume effects associated with the small molecular size of water. However, a sharp distinction is found when exploring the temperature dependence of hydration phenomena since, in contrast to the situation for the constant-V process, the properties of pure water play a crucial role at isobaric conditions. Specifically, the solubility minimum as well as enthalpy and entropy convergence phenomena, exclusively ascribed to isobaric solvation, are closely related to water's density maximum. Furthermore, the behavior of the partial molecular volume and the partial molecular isobaric heat capacity highlights the interplay between water anomalies, attraction, and repulsion. The overall picture presented here is supported by experimental observations, simulations, and previous theoretical results.

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Section: Patterns Of Solubilitymentioning

confidence: 99%

Water anomalous thermodynamics, attraction, repulsion, and hydrophobic hydration

Cerdeiriña

Debenedetti

2016

The Journal of Chemical Physics

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“…f) Dispersion of excess aqueous hydrochloric acid in petrol ether as a solvent. Thus, the actual concentration of dissolved water can be estimated to be on the order of the saturation concentration in hexane (~37 mM [66]). …”

Section: Synthesis In the Gas Phasementioning

confidence: 99%

One-dimensional silicone nanofilaments

Artus

Seeger

2014

Advances in Colloid and Interface Science

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A decade ago one-dimensional silicone nanofilaments (1D-SNF) such as fibres and wires were described for the first time. Since then, the exploration of 1D-SNF has led to remarkable advancements with respect to material science and surface science: one-, two-and three-dimensional nanostructures of silicone were unknown before. The discovery of silicone nanostructures marks a turning point in the research on the silicone material at the nanoscale. Coatings made of 1D-SNF are among the most superhydrophobic surfaces known today. They are free of fluorine, can be applied to a large range of technologically important materials and their properties can be modified chemically. This opens the way to many interesting applications such as water harvesting, superoleophobicity, separation of oil and water, patterned wettability and storage and manipulation of data on a surface. Because of their high surface area, coatings consisting of 1D-SNF are used for protein adsorption experiments and as carrier systems for catalytically active nanopartides. This paper reviews the current knowledge relating to the broad development of 1D-SNF technologies. Common preparation and coating techniques are presented along with a comparison and discussion of the published coating parameters to provide an insight on how these affect the topography of the 1D-SNF or coating. The proposed mechanisms of growth are presented, and their potentials and shortcomings are discussed. We introduce all explored applications and finally identify future prospects and potentials of 1D-SNF with respect to applications in material science and surface science.

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“…For the water + octane mixture, since the two compounds are almost immiscible to each other [52], the flash-point values of water + octane with complete stirring are almost constant, and are very close to the value of octane over the whole test range [12], the flash-point values of such mixtures without stirring are almost equivalent to those of the completely stirred mixtures.…”

Section: Discussionmentioning

confidence: 74%

Effect of stirring on the safety of flammable liquid mixtures

Liaw

Gerbaud

Chen

et al. 2010

Journal of Hazardous Materials

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Flash point is the most important variable employed to characterize fire and explosion hazard of liquids. The models developed for predicting the flash point of partially miscible mixtures in the literature to date are all based on the assumption of liquid-liquid equilibrium. In real-world environments, however, the liquid-liquid equilibrium assumption does not always hold, such as the collection or accumulation of waste solvents without stirring, where complete stirring for a period of time is usually used to ensure the liquid phases being in equilibrium. This study investigated the effect of stirring on the flash-point behavior of binary partially miscible mixtures. Two series of partially miscible binary mixtures were employed to elucidate the effect of stirring. The first series was aqueous-organic mixtures, including water+1-butanol, water+2-butanol, water+isobutanol, water+1-pentanol, and water+octane; the second series was the mixtures of two flammable solvents, which included methanol+decane, methanol+2,2,4-trimethylpentane, and methanol+octane. Results reveal that for binary aqueous-organic solutions the flash-point values of unstirred mixtures were located between those of the completely stirred mixtures and those of the flammable component. Therefore, risk assessment could be done based on the flammable component flash-point value. However, for the assurance of safety, it is suggested to completely stir those mixtures before handling to reduce the risk.

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Recommended Liquid–Liquid Equilibrium Data. Part 1. Binary Alkane–Water Systems

Cited by 100 publications

References 0 publications

Water anomalous thermodynamics, attraction, repulsion, and hydrophobic hydration

Water anomalous thermodynamics, attraction, repulsion, and hydrophobic hydration

One-dimensional silicone nanofilaments

Effect of stirring on the safety of flammable liquid mixtures

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