基于银的酒精功能化溶剂,用于有效分离烯
Hongwei Kang1, Guojia Yu2, Jingyi Xu1
1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
Chem & bio engineering
|March 4, 2026
概括
研究人员开发了新的基于银的溶剂,以高效地分离/烯. 这些酒精功能化溶剂利用π-π*协调和盐效应来高度选择性地提取烯酸,如环烯和1-烯.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
- 分离科学 分离科学
背景情况:
- 烯和烯是重要的化学原料,但由于具有相似的特性,它们的分离具有挑战性.
- 对石化行业来说,有效地将烯酸与烯酸分离至关重要.
研究的目的:
- 设计和合成新的基于银的酒精功能化溶剂.
- 为了实现有效和高度选择性地将环素从环素分离出来.
- 为了评估这些溶剂在/烯分离系统中的性能.
主要方法:
- 使用1,2-propanediol (1,2-PG) 作为配体和四博酸 (BF4-) 作为离子合成基于银的溶剂.
- 使用Ag+和olefin双键之间的π-π*协调.
- 利用盐效应来提高分离效率.
- 在循环/循环和1-/n-系统中测试溶剂.
主要成果:
- 开发的基于银的溶剂表现出高的选择性和提取能力,用于循环烯和1-hexene.
- 在最佳条件下,循环烯的分布系数为5.456,选择性为1362.
- 环烯的单阶段提取率达到了94.24%.
- 溶剂系统在1-hexene/n-hexane系统中表现出色,分布系数为6.733,选择性为647.4.4.
结论:
- 基于银的酒精功能化溶剂提供了一种高效和强大的烯/烯分离方法.
- π-π* 协调和盐效应的协同效应是提高性能的关键.
- 这些对环境无害的溶剂为现有的分离技术提供了一个有希望的替代方案.
更多相关视频
相关概念视频
Solvents
58.5K
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...
58.5K
Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis
11.0K
Overview
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.
11.0K
Preparation of Alcohols via Substitution Reactions
6.5K
Overview
Alcohols can be synthesized from alkyl halides via nucleophilic substitution reactions. The highly polar carbon-halogen bond in the substrate makes halide a good leaving group. The hydroxide ion or water can act as a nucleophile to take the place of halide and form an alcohol. The substitution reactions occur via two different reaction pathways, SN1 or SN2, depending on the nature of carbon attached to the halide.
Primary alcohols are synthesized from primary alkyl halides, and the...
Alcohols can be synthesized from alkyl halides via nucleophilic substitution reactions. The highly polar carbon-halogen bond in the substrate makes halide a good leaving group. The hydroxide ion or water can act as a nucleophile to take the place of halide and form an alcohol. The substitution reactions occur via two different reaction pathways, SN1 or SN2, depending on the nature of carbon attached to the halide.
Primary alcohols are synthesized from primary alkyl halides, and the...
6.5K
Mass Spectrometry: Alcohol Fragmentation
4.7K
Alcohols (R-OH) ionize to lose one non-bonded electron from the oxygen atom, forming molecular ions. Due to their tendency to fragment rapidly, the intensity of the molecular ion peak in the mass spectrum is weak or sometimes absent. The fragmentation patterns for alcohols occur in two ways, i.e. ⍺-cleavage and dehydration. During ⍺-cleavage, the bond at the ⍺-position adjacent to the hydroxyl group cleaves to give a resonance-stabilized cation and a radical. However,...
4.7K
Size-Exclusion Chromatography
2.8K
In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
Silica particles offer advantages such as rigidity,...
2.8K
Supercritical Fluid Chromatography
1.5K
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.
SFC utilizes a supercritical fluid mobile phase,...
SFC utilizes a supercritical fluid mobile phase,...
1.5K


