相关实验视频

Updated: Sep 19, 2025

Preparation of Binary and Ternary Deep Eutectic Systems
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Preparation of Binary and Ternary Deep Eutectic Systems

Published on: October 31, 2019

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一项对机械化学和热学准备的深层阳性溶剂进行比较研究

Oluseyi Olawuyi1, Md Rakibul Hasan2, Tomasz Kruczyński1

  • 1Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144, United States.

ACS omega
|June 16, 2025
PubMed
概括

机械化学提供了一种更绿色的替代方案,可以在不加热的情况下制备深溶解剂 (DES),从而减少能源使用和副产品的形成. 这种溶剂制备方法对工业应用具有显著的优势.

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Ultrafast Lignin Extraction from Unusual Mediterranean Lignocellulosic Residues09:22

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相关概念视频

Solvents01:12

Solvents

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.
A...
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Sample Preparation for Analysis: Advanced Techniques01:08

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
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Energetics of Solution Formation02:35

Energetics of Solution Formation

The formation of a solution is an example of a spontaneous process, which is a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Formation of the solution requires the solute–solute and solvent–solvent...
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Enthalpy of Solution02:39

Enthalpy of Solution

There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution:
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Chemical and Solubility Equilibria02:21

Chemical and Solubility Equilibria

The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ΔGsolution is expressed as the balance of ΔGinteraction against the always-favorable free-energy of mixing, ΔGmixing. Solution formation is favorable if  ΔGsolution is less than zero, whereas it is unfavorable if ΔGsolution is greater than zero. In short, for a solution to form and complete dissolution to take place,...
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Entropy and Solvation02:05

Entropy and Solvation

The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
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