scholarly journals Unexpected Inverse Correlations and Cooperativity in Ion-pair Phase Transfer

2021 ◽  
Author(s):  
Nitesh Kumar ◽  
Aurora Clark
Keyword(s):  
Phase Transfer ◽  
Liquid Extraction ◽  
Ion Pair ◽  
Transport Mechanisms ◽  
Separation And Purification ◽  
Solute Partitioning ◽  
Liquid Liquid Extraction ◽  
Purification Methods

Liquid/liquid extraction is one of the most widely used separation and purification methods, where a forefront of research is the study of transport mechanisms for solute partitioning and the relationships...

Separation and Purification of Lipases by Liquid-Liquid Extraction Processes

1996 ◽  
pp. 551-576 ◽  
Author(s):  
M. G. Carneiro-Da-Cunha ◽  
E. P. Melo ◽  
M. J. Sebastião ◽  
M. R. Aires-Barros ◽  
J. M. S. Cabral
Keyword(s):  
Liquid Extraction ◽  
Separation And Purification ◽  
Liquid Liquid Extraction ◽  
Extraction Processes

A microfluidic study of liquid–liquid extraction mediated by carbon dioxide

Lab on a Chip ◽  
2016 ◽  
Vol 16 (14) ◽  
pp. 2710-2718 ◽  
Author(s):  
Gabriella Lestari ◽  
Alinaghi Salari ◽  
Milad Abolhasani ◽  
Eugenia Kumacheva
Keyword(s):  
Carbon Dioxide ◽  
Energy Consumption ◽  
Environmental Impact ◽  
Liquid Extraction ◽  
Separation And Purification ◽  
Purification Method ◽  
Carbon Dioxide Gas ◽  
Liquid Liquid Extraction ◽  
Switchable Solvents ◽  
Reactive Liquid

Liquid–liquid extraction is an important separation and purification method; however, it faces a challenge in reducing the energy consumption and the environmental impact of solvent (extractant) recovery. An oscillatory microfluidic platform is proposed to study reactive liquid–liquid extraction involving switchable solvents and carbon dioxide gas.

scholarly journals Highly Efficient, Tripodal Ion-Pair Receptors for Switching Selectivity between Acetates and Sulfates Using Solid–Liquid and Liquid–Liquid Extractions

2020 ◽  
Vol 21 (24) ◽  
pp. 9465
Author(s):  
Marta Zaleskaya ◽  
Łukasz Dobrzycki ◽  
Jan Romański
Keyword(s):  
Binding Sites ◽  
Liquid Extraction ◽  
Ion Pair ◽  
Anion Binding ◽  
Binding Modes ◽  
Anion Receptor ◽  
X Ray ◽  
Liquid Liquid Extraction ◽  
Solid Liquid Extraction ◽  
Solid Liquid

A tripodal, squaramide-based ion-pair receptor 1 was synthesized in a modular fashion, and 1H NMR and UV-vis studies revealed its ability to interact more efficiently with anions with the assistance of cations. The reference tripodal anion receptor 2, lacking a crown ether unit, was found to lose the enhancement in anion binding induced by presence of cations. Besides the ability to bind anions in enhanced manner by the “single armed” ion-pair receptor 3, the lack of multiple and prearranged binding sites resulted in its much lower affinity towards anions than in the case of tripodal receptors. Unlike with receptors 2 or 3, the high affinity of 1 towards salts opens up the possibility of extracting extremely hydrophilic sulfate anions from aqueous to organic phase. The disparity in receptor 1 binding modes towards monovalent anions and divalent sulfates assures its selectivity towards sulfates over other lipophilic salts upon liquid–liquid extraction (LLE) and enables the Hofmeister bias to be overcome. By changing the extraction conditions from LLE to SLE (solid–liquid extraction), a switch of selectivity from sulfates to acetates was achieved. X-ray measurements support the ability of anion binding by cooperation of the arms of receptor 1 together with simultaneous binding of cations.

A hydrogen bond-modulated soft nanoscale water channel for ion transport through liquid-liquid interfaces

Soft Matter ◽  
2021 ◽  
Author(s):  
Boyao Wen ◽  
Chengzhen Sun ◽  
Zhengyuan Luo ◽  
Xi Lu ◽  
Haibo Wang ◽  
...  
Keyword(s):  
Ion Transport ◽  
Oil Recovery ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Water Channel ◽  
Liquid Extraction ◽  
Liquid Interfaces ◽  
Liquid Liquid Extraction ◽  
Stabilization Phase ◽  
Emulsion Stabilization

Ion transport through interfaces is of ubiquitous importance in many fields such as electrochemistry, emulsion stabilization, phase transfer catalysis, liquid-liquid extraction and enhanced oil recovery. However, the knowledge of interfacial...

Ion-pair assisted liquid–liquid extraction for selective separation and analysis of multiclass pesticide residues in environmental waters

2014 ◽  
Vol 6 (13) ◽  
pp. 4633-4642 ◽  
Author(s):  
Abera Gure ◽  
Negussie Megersa ◽  
Negussie Retta
Keyword(s):  
Quantitative Determination ◽  
Pesticide Residues ◽  
Extraction Method ◽  
Environmental Water ◽  
Liquid Extraction ◽  
Ion Pair ◽  
Environmental Waters ◽  
Extraction Solvent ◽  
Liquid Liquid Extraction

Ion-pair-assisted liquid–liquid extraction method, using acetonitrile as the extraction solvent, for the quantitative determination of ten multiclass pesticides in environmental water.

An ion-pair receptor comprising urea groups and N-benzyl-aza-18-crown-6: effective recognition and liquid–liquid extraction of KCl salt

2018 ◽  
Vol 47 (2) ◽  
pp. 323-330 ◽  
Author(s):  
Maciej Zakrzewski ◽  
Dominika Załubiniak ◽  
Piotr Piątek
Keyword(s):  
Liquid Extraction ◽  
Ion Pair ◽  
Liquid Liquid Extraction

Heteroditopic ion-pair receptor that contains two urea groups and N-benzyl-18-crown-6 is shown to effectively recognizes and extracts KCl salt.

Sign in / Sign up

Export Citation Format

Share Document