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Related Concept Videos

Solvents01:12

Solvents

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A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
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Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
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High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

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In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Colloidal precipitates01:09

Colloidal precipitates

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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

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Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
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Preparation of Binary and Ternary Deep Eutectic Systems
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Preparation of Binary and Ternary Deep Eutectic Systems

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CO2 switchable deep eutectic solvents for reversible emulsion phase separation.

Feijie Liu1, Zhimin Xue2, Xue Lan3

  • 1College of Materials Science and Technology, Beijing Forestry University, No. 35 Tsinghua East Road, Haidian, Beijing 100083, China. zmxue@bjfu.edu.cn and Department of Chemistry, Renmin University of China, No. 59 Zhongguancun Street, Haidian, Beijing 100872, China. tcmu@ruc.edu.cn.

Chemical Communications (Cambridge, England)
|December 21, 2020
PubMed
Summary
This summary is machine-generated.

New CO2 switchable deep eutectic solvents (DESs) were designed for easy separation. These imidazole-based DESs offer a green approach for dissolving and separating olive oil, showing great potential for industrial applications.

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Measurement of the Rheology of Crude Oil in Equilibrium with CO2 at Reservoir Conditions
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Area of Science:

  • Green Chemistry
  • Materials Science
  • Chemical Engineering

Background:

  • Deep eutectic solvents (DESs) are gaining attention as sustainable alternatives to traditional solvents.
  • Developing switchable DESs that can be easily controlled and recycled is crucial for their practical application.
  • Imidazole-based compounds offer unique properties for solvent design.

Purpose of the Study:

  • To propose and design novel CO2 switchable deep eutectic solvents (DESs) based on imidazole.
  • To investigate the CO2 switch mechanism of these novel DESs.
  • To demonstrate the application of these DESs in the separation of olive oil from emulsions.

Main Methods:

  • Design and synthesis of imidazole-based deep eutectic solvents.
  • Investigation of the CO2 switch mechanism using appropriate analytical techniques.
  • Application of the switchable DESs for the emulsion separation of olive oil.

Main Results:

  • A series of CO2 switchable imidazole-based DESs were successfully designed.
  • The CO2 switch mechanism was elucidated, demonstrating controllable switching.
  • Effective emulsion separation of olive oil from the DESs was achieved, highlighting the system's efficiency.

Conclusions:

  • The developed CO2 switchable DESs are benign and efficient for dissolution and separation processes.
  • These novel DESs exhibit significant potential for green chemistry applications, particularly in oil separation.
  • The CO2 switchability offers a sustainable and easily controllable method for solvent recycling and product recovery.