This work presents a model of activity coefficients and a database for ionic equilibria of Cu2+, Zn2+, and Cd2+ in (H+, Na+, K+, Mg2+, Ca2+)(OH-, Cl-, NO-3, ClO-4, HSO-4, SO2-(4), HCO-3, CO(2-)3) aqueous media valid up to 6-12 m ionic strength. The activity coefficient of a dissolved species is represented by empirical equation [Formula: see text] , where Agamma is Debye-Hückel constant (1.17 at 25 degrees C), gammai and zi are activity coefficient and charge of a dissolved species i, I is molal ionic strength, bij is model parameter, and mj is molal concentration of dissolved species. The model is applicable to the modeling of ionic equilibria, as well as to simulation of solubility of salts in mixed electrolyte solutions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2005.05.019 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Proton Transfer Equilibrium in Pseudoprotic Ionic Liquids: Inferences on Ionic Populations.
J Phys Chem B
January 2025
Department of Chemistry and Biochemistry, Brooklyn College of the City University of New York, 2900 Bedford Ave., Brooklyn, New York 11210, United States.
Nonstoichiometric pseudoprotic ionic liquids (NPPILs) are an emerging class of ionic liquids with interesting physical properties and intriguing prospects for technological applications. However, fundamental questions remain about the proton transfer equilibria that underlie their ionic character. We use a combination of nuclear magnetic resonance spectroscopy, infrared spectroscopy, and small-angle X-ray scattering to characterize the equilibria of trihexylamine/butyric acid and water/butyric acid mixtures.
View Article and Find Full Text PDFMolecular insights on the solvent screening for the benzene extraction from fuels using ionic liquids via QSPR method.
Sci Rep
December 2024
School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran.
Benzene separation from hydrocarbon mixtures is a challenge in the refining and petrochemical industries. The application of liquid-liquid extraction process using ionic liquids (I.Ls) is an option for this separation.
View Article and Find Full Text PDFDouble Hydrophilic Hyperbranched Copolymer-Based Lipomer Nanoparticles: Copolymer Synthesis and Co-Assembly Studies.
Polymers (Basel)
November 2024
Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.
Double hydrophilic, random, hyperbranched copolymers were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization of oligo(ethylene glycol) methyl ether methacrylate (OEGMA) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) utilizing ethylene glycol dimethacrylate (EGDMA) as the branching agent. The resulting copolymers were characterized in terms of their molecular weight and dispersity using size exclusion chromatography (SEC), and their chemical structure was confirmed using FT-IR and H-NMR spectroscopy techniques. The choice of the two hydrophilic blocks and the design of the macromolecular structure allowed the formation of self-assembled nanoparticles, partially due to the pH-responsive character of the DMAEMA segments and their interaction with -COOH end groups remaining from the chain transfer agent.
View Article and Find Full Text PDFMultiphase Behavior of the Water + 1-Butanol + Deep Eutectic Solvent Systems at 101.3 kPa.
Molecules
October 2024
Department of Chemical Engineering, Lorena School of Engineering (EEL/USP), University of São Paulo, Lorena 12602-810, SP, Brazil.
Article Synopsis
- * This study focuses on the thermodynamic behavior of water + 1-butanol + DES systems, specifically choline chloride + glycerol, by examining liquid-liquid equilibrium (LLE) and vapor-liquid equilibrium (VLE) at controlled conditions, employing established thermodynamic models for analysis.
- * Results include the development of phase diagrams and calculations of separation coefficients, which help evaluate the effectiveness of DESs in extraction processes, offering insights into their potential applications in industrial separations. *
H, C, N NMR, and DFT Studies on Complex Formation of Zinc(II) Ion with Ethylenediamine in Ionic Liquid [CmIm][TFSA].
J Phys Chem B
October 2024
Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi, Saga 840-8502, Japan.
Article Synopsis
- The research investigates how zinc(II) ion forms complexes with ethylenediamine in an ionic liquid called bis(trifluoromethylsulfonyl)amide (*TFSA*).
- Using NMR techniques, it identifies the existence and stability of mono-, bis-, and tris-ethylenediamine complexes as the concentration of ethylenediamine changes.
- The study compares the stability of these zinc-ethylenediamine complexes in the ionic liquid with their stability in water, highlighting the role of hydrogen bonding in affecting stability.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!