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Preparation of Binary and Ternary Deep Eutectic Systems
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Simple Estimates for Eutectic Behavior.

Pekka Pyykkö1

  • 1Department of Chemistry, University of Helsinki, POB 55 (A. I. Virtasen aukio 1), 00014, Helsinki, Finland.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|December 6, 2018
PubMed
Summary
This summary is machine-generated.

A new formula estimates eutectic points in binary systems using monomer properties. This simple model accurately predicts mixtures, including ionic and non-ionic compounds, offering an alternative to complex equations.

Keywords:
Eutectic pointsSchröder-van Laar equationdeep eutectic solventsfreezing-point depressionsalt melts

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Area of Science:

  • Physical Chemistry
  • Materials Science
  • Chemical Thermodynamics

Background:

  • Eutectic point determination is crucial for understanding mixture phase behavior.
  • Existing models like the Schröder-van Laar equation have limitations.
  • Predicting eutectic behavior in diverse systems (ionic, non-ionic) remains challenging.

Purpose of the Study:

  • To derive a simple, predictive formula for the eutectic point of binary (A-B) systems.
  • To validate the formula across various ionic and non-ionic mixtures.
  • To compare the derived formula's performance against the established Schröder-van Laar equation.

Main Methods:

  • Derivation of a new formula based on monomer melting points and enthalpies.
  • Experimental or literature data compilation for diverse A-B systems.
  • Comparative analysis of predicted versus experimental eutectic points.

Main Results:

  • The derived formula provides a straightforward estimation of eutectic points.
  • Accurate predictions were observed for both non-ionic and ionic systems.
  • The formula shows comparable or improved accuracy over the Schröder-van Laar equation for tested systems.

Conclusions:

  • A simplified approach for predicting eutectic points is now available.
  • The new formula offers a valuable tool for materials design and phase behavior studies.
  • This method simplifies the analysis of eutectic phenomena in complex mixtures.