Application of Differential Thermal Analysis to the Study of Phase Equilibria in Metal Systems

Etter, D.E.; Tucker, P.A.; Wittenberg, L.J.

doi:10.1016/b978-0-12-395734-4.50016-3

Cited by 3 publications

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“…Melting temperatures are around 10 K higher in our measurements, possibly due to higher starting material purity or more inert mixture preparation. In the typical solid-liquid equilibrium measured in compound formation systems, a sharp eutectic melting peak at the eutectic temperature is observed prior to flat melting in the S-L existence range in all mixtures except from pure components A and B and pure compounds formed [11]. In our measurements, only the flat melting peak exists (Fig.…”

Section: Characterization Of the Phase Behavior In The Fresh And Spenmentioning

confidence: 70%

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf₂N]‐AlCl₃

Cervera

König

2010

Chem Eng & Technol

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In the last years, the ionic liquid system formed by specific mixtures of 1-ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide (EMIM[Tf 2 N]) and AlCl 3 proved to be a very suitable electrolyte for the electrodeposition of aluminum. In order to establish an industrial electrodeposition process based on this novel electrolyte system, the suitability of melt crystallization for purification and recycling of these electrolytes has been studied. It exists a composition range in the ternary system where the compound EMIM[AlCl 4 ] can be crystallized in a high purity. The layer melt crystallization technique is successfully applied to the binary system EMIMCl-AlCl 3 and to the real ternary electrolytes. Hydrolysis is proposed for treatment of the residue. In aqueous solutions, the membrane process nanofiltration is applied for concentration and recovery of the ionic components. An integral recycling concept is presented.

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Section: Characterization Of the Phase Behavior In The Fresh And Spenmentioning

confidence: 70%

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf₂N]‐AlCl₃

Cervera

König

2010

Chem Eng & Technol

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Solid‐state phase behavior and molecular‐level mixing phenomena in a strongly interacting polymer blend

Belfiore

Lutz

Cheng

et al. 1990

J Polym Sci B Polym Phys

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SynopsisThis research Contribution addresses mixing phenomena in a polymer blend that exhibits strong intermolecular association and bieutectic phase behavior. Molecular-level observations of specific interactions between dissimilar blend components have been obtained from high-resolution solidstate proton and carbon-13 nuclear magnetic resonance ( N M R ) experiments at ambient temperature. Results illustrate mixing effects on the isotropic chemical shifts of the critical component in a completely or partially phase-mixed blend. Perturbations in the NMR spectra result from conformational changes, hydrogen bonding, molecular complexation, or altered packing geometries that occur concomitantly with the mixing process. More convincing evidence that two components of a strongly interacting blend reside in a near-neighbor environment is obtained from the measurement of proton spin diffusion between dissimilar species. Proton spin diffusion is measured directly via the high-resolution CRAMPS experiment (Combined Rotation and Multiple Pulse Spectroscopy) in a molecular complex of poly( ethylene oxide) and resorcinol. A primary objective of this research endeavor is to bridge the gap between macroscopic and molecular-level probes of phase behavior and intermolecular association in mixtures that form molecular complexes. In this respect, the temperature-composition projection of the thermodynamic phase diagram is generated for binary mixtures of poly (ethylene oxide) and resorcinol, whose interaction sites are characterized via solid-state NMR. Under fortuitous conditions that are related to the overall mixture composition, two morphologically and crystallographically inequivalent phenolic I3C NMR signals are identified for resorcinol when the blends exist in a two-phase region below the eutectic solidification temperature. The success of this proposed structure-property relationship scheme, which bridges molecular-level mixing phenomena (via NMR) with solid-state phase behavior (via differential scanning calorimetry) depends on our ability to understand material properties at a level where continuum hypotheses are no longer valid.

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Phase studies of the system Li2O-BaO-Nb2O5 in relation to Czochralski growth problems of Ba2LiNb5O15 single crystals

1975

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Application of Differential Thermal Analysis to the Study of Phase Equilibria in Metal Systems

Cited by 3 publications

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Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf₂N]‐AlCl₃

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf₂N]‐AlCl₃

Solid‐state phase behavior and molecular‐level mixing phenomena in a strongly interacting polymer blend

Phase studies of the system Li2O-BaO-Nb2O5 in relation to Czochralski growth problems of Ba2LiNb5O15 single crystals

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Application of Differential Thermal Analysis to the Study of Phase Equilibria in Metal Systems

Cited by 3 publications

References 0 publications

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf2N]‐AlCl3

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf2N]‐AlCl3

Solid‐state phase behavior and molecular‐level mixing phenomena in a strongly interacting polymer blend

Phase studies of the system Li2O-BaO-Nb2O5 in relation to Czochralski growth problems of Ba2LiNb5O15 single crystals

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Product

Resources

About

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf₂N]‐AlCl₃

Recycling Concept for Aluminum Electrodeposition from the Ionic Liquid System EMIM[Tf₂N]‐AlCl₃