相关实验视频
Updated: Jun 7, 2025
06:15
Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
11.9K
不同水友性天然深层欧特基溶剂的结构特征和物理化学特性
Laura Carbonell-Rozas1, Romina Canales2, Roberto Romero-González3
1Analytical Chemistry of Contaminants, Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agrifood Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence (ceiA3), University of Almeria, E-04120, Almeria, Spain. lauracr@ual.es.
Analytical and bioanalytical chemistry
|November 12, 2024
概括
天然深层环氧溶剂 (NADES) 为有毒有机溶剂提供了一种绿色替代品. 基于乳酸和胆化物的NADES显示出聚提取的高潜力,由物理化学性质分析和NMR证实.
科学领域:
- 绿色化学是一种绿色化学.
- 超分子化学 超分子化学
- 溶剂工程 溶剂工程
背景情况:
- 在各种行业中,对危险有机溶剂的可持续替代品的需求日益增加.
- 天然深层环氧溶剂 (NADES) 是一类具有可调节性质的有前途的绿色溶剂.
- 了解NADES的物理化学特性和分子相互作用对于其工业应用至关重要.
研究的目的:
- 评估各种乳酸,酸,胆化物和尿素 NADES 的物理化学特性.
- 通过核磁共振 (NMR) 谱学研究NADES内部的分子间相互作用.
- 评估NADES的多提取效率,并将其与其属性相关联.
主要方法:
- 物理化学表征:密度,pH,粘度,导电性,折射率.
- 核磁共振 (NMR) 光谱学,特别是核过量增强光谱学 (NOESY),用于相互作用研究.
- 多提取实验和与COSMO-RS软件预测的比较.
主要成果:
- 几种NADES的特征,揭示了不同的物理化学概况.
- 通过NOESY证实了eutectic混合物的形成,表明了分子间相互作用.
- 基于乳酸和胆化的NADES显示出优异的多烯提取产量.
- 实验结果与COSMO-RS预测有很好的一致性.
结论:
- 基于乳酸和胆化的NADES是有效的绿色溶剂,用于聚提取.
- 物理化学性质和分子相互作用显著影响提取效率.
- NADES代表了工业提取过程的可行和可持续的替代方案.
相关概念视频
02:05Entropy and Solvation
7.0K
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...
7.0K
03:00Solubility
17.3K
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,...
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,...
17.3K
02:17Physical Properties of Ethers
6.9K
Overview
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
An ether molecule has a net dipole moment due to the polarity of C–O bonds. Subsequently, boiling points of ethers are lower than those of alcohols of comparable molecular weight and slightly higher than those of hydrocarbons of comparable molecular weight (Table 1).
Ethers can act as hydrogen bond acceptors, making them more water-soluble than hydrocarbons, but since ethers cannot act as hydrogen bond donors, they are much less soluble in water than alcohols. Ethers are considered...
6.9K
02:56Intermolecular Forces and Physical Properties
20.4K
20.4K
01:12Solvents
64.3K
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...
A...
64.3K
02:16Solution Formation
31.3K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
This selective...
31.3K