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関連する概念動画

Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

Solubility03:00

Solubility

Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules, atoms, and/or ions)...
Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an organic...
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
Ion Exchange01:17

Ion Exchange

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 basic...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...

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関連する実験動画

Updated: Jul 13, 2026

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

CO(2) は,イオン性液体/有機混合物の分離スイッチとして使用されています.

Aaron M Scurto1, Sudhir N V K Aki, Joan F Brennecke

  • 1Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA.

Journal of the American Chemical Society
|August 29, 2002
PubMed
まとめ

新しい方法では,二酸化炭素 (CO2) を使用して,有機化合物からイオン性液体を分離します. このCO2による相分離は,イオン性液体のない有機相を作り出し,浄化と製品回収を助けます.

科学分野:

  • 化学工学は化学工学というものです.
  • 分離科学とは,分離科学である.
  • グリーン・ケミストリー (Green Chemistry)

背景:

  • イオン性液体 (ILs) は多用途の溶媒ですが,有機化合物から分離することは困難です.
  • 伝統的な分離方法ではエネルギーが多く消費され,効率が悪くなる可能性があります.
  • 持続可能な分離技術の開発は,グリーン化学のアプリケーションにとって極めて重要です.

研究 の 目的:

  • イオン性液体-有機混合物の新型CO2ベースの分離技術を導入する.
  • 超臨界CO2を用いて,メタノールと3-ブチル-1-メチル-イミダゾリウムヘクサフッロロフォスファート ([C4mim][PF6]) の選択的相分離を実証する.
  • 二相反応における製品回収と浄化への影響を調査する.

主な方法:

  • 二酸化炭素 (CO2) を利用して,メタノール/[C4mim][PF6]混合物における液体-液体相分離を誘導する.
  • CO2の臨界温度を超えて操作することで,メタノール豊富な相との混合性を達成します.
  • 液体のイオン含有量について,結果の相を分析する.

主要な成果:

  • CO2の添加により,液体に富んだ異なったイオンと有機に富んだ異なった相が形成された.

さらに関連する動画

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks
10:31

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks

Published on: May 8, 2015

Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol
09:08

Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol

Published on: April 2, 2018

関連する実験動画

Last Updated: Jul 13, 2026

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks
10:31

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks

Published on: May 8, 2015

Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol
09:08

Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol

Published on: April 2, 2018

  • CO2の臨界点を超える温度で,メタノールが豊富な相は,CO2と混合し,イオン性液体のない状態になった.
  • CO2の非極性性は溶媒の力を低下させ,イオン液相分離を促した.

    • 結論:

    • 開発された技術は,有機化合物からイオン性液体を分離するための効率的な方法を提供します.
    • このアプローチにより,イオン性液体で汚染された有機相の浄化が可能になります.
    • この発見は,CO2/イオン性液体二相システムで実施される反応にとって重要である.