Conductance of lithium and sodium perchlorates and of some quaternary ammonium halides and perchlorates in a propylene carbonate + tetrahydrofuran mixture at 25 .degree.C

Al-Najar, Anis A.; Alami, Khadim M. H.; Ebraheem, Awatif M.

doi:10.1021/je00008a015

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…Moreover, PC is an excellent solvent for many organic and inorganic materials in such applications as surface cleaners, degreasers, dyes, plastics, batteries, and natural gas. It is also widely used for lithium battery electrolytes because of its high relative permittivity, high boiling point, and good solubilizing power for lithium salts. − A comprehension of its local liquid structure and its interaction with water in the PC-rich region of the phase diagram would be interesting to deeper understand its peculiar and anomalous properties and its potentiality as a solvent and reaction medium. Moreover, PC has been studied but mainly with the aim of characterizing some electrochemical properties in the presence of electrolytes …”

Section: Introductionmentioning

confidence: 99%

Peculiar Properties of Water as Solute

Dei

Grassi

2006

J. Phys. Chem. B

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Water has been investigated for a long time as the most important solvent; the peculiar behavior of water as solute has been studied in binary mixtures with organic solvents, mainly exploring the whole phase diagram. In this Article, we studied the behavior of water in binary mixtures with propylene carbonate in the phase diagram region where water acts as a solute as a function of the water molar fraction X(water). Surface tension measurements, differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FTIR) have been used to investigate the state of water molecules and hydrogen bonds when water is to be considered a solute instead of a solvent, and peculiar and interesting properties were discovered. The interaction of water molecules among themselves and between water and propylene carbonate has been shown to be dependent on the water concentration in the mixtures. All of the measured properties showed a break at X(water) approximately 0.15-0.20 similar to the break due to the critical micellar concentration in surfactant solutions. In particular, from the FTIR spectra, it was possible to deduce that at this concentration water has a transition from pure solute ("multimers" solvated by PC) to cosolvent ("intermediate" and "network" water).

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Section: Introductionmentioning

confidence: 99%

Peculiar Properties of Water as Solute

Dei

Grassi

2006

J. Phys. Chem. B

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“…We are engaged in a systematic study on the thermodynamic properties of esters of carbonic acids, which are indicated in the literature to have good properties as solvents in a variety of extractions of industrial interest and in pharmaceutical (1,2) and electrochemical studies (3,4).…”

Section: Introductionmentioning

confidence: 99%

Excess Molar Enthalpies and Excess Molar Volumes of Propylene Carbonate + Cyclic Ethers

Francesconi¹,

Comelli²

1995

J. Chem. Eng. Data

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“…In comparison, little information was available for symmetric polyvalent (Molinou and Tsierkezos, 2001;Molinou, 2000, 2006) and unsymmetric electrolytes (K 2 SO 4 , Na 2 SO 4 , Cd(NO 3 ) 2 , CdCl 2 , CaCl 2 , Ca(NO 3 ) 2 , CoCl 2 , and Zn(NO 3 ) 2 ) in nonaqueous (e.g., Gibson et al, 2006;Pura, 2007) or mixed solvents (Fujii et al, 2006;Qiao et al, 2008). In mixed nonaqueous solvents, the study of complexation were almost limited to symmetric univalent electrolytes in binary mixtures containing PC and selected dipolar aprotic solvents such as THF (Al-Najar et al, 1992), EC (Srivastava and Samant, 1994), DMSO (Srivastava and Shankar, 1998), AN (Barthel et al, 1999), and so forth. Qiao et al (2008) determined the ion association of LiBF 4 in MEC + DMC and MEC + AN, and Fujii et al (2006) measured the formation constants of cobalt chloride ion pairs (CoCl + , CoCl − 3 , CoCl 2− 4 , CoCl (2−n)+ n , n = 1-4) in DMF + NMF.…”

Section: Downloaded By [Northeastern University] At 07:36 27 Novembermentioning

confidence: 99%

“…DMSO + PC (20-80%; 25 • C) [Srivastava and Shankar, 1998] Perchlorate 2-methoxyethanol + H 2 O (20-80%; 25 • C) [Das and Hazra, 1998]. PC -Najar et al, 1992]. MEK + Ac (0-100%; 25 • C) [Niazi, 1988].…”

Section: Downloaded By [Northeastern University] At 07:36 27 Novembermentioning

confidence: 99%

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Solution Properties of Inorganic Contamination in Mixed Solvents: Theory, Progress, and Limitations

Srour¹,

McDonald

2011

Critical Reviews in Environmental Science and Technology

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Most of what is known about the environmental fate and transport of contaminants comes from studies of dilute, aqueous solutions. Theoretical and practical aspects of hydrophobic organic contaminants in aqueous mixtures of organic solvents are well developed, but relatively little attention has been paid to those situations where inorganic contaminants such as metals, water, and organic solvents occur simultaneously. The authors discuss changes in solution properties accompanying the addition of organic solvents. They review more than 500 references to available data on ion solvation, solubility, activity, acidity, pairing, and pH in electrolyte and electrolyte-free solvent mixtures and tabulate selected experimental values. Whenever available, equations developed to estimate these properties are given and their applications and limitations described. The implications of the progress in mixed-solvents solution chemistry on contaminant behavior and transport are described. Major limitations to the study of inorganic contamination in mixed solvents include the absence of complete and comprehensive data (e.g., type of ionic species, activity coefficients, solubility constants) that characterize solute and solvent properties in these mixtures and the indefinite number of possible solute and solvent combinations. The generation of models predicting such data from easily measured benchmark solute and solvent properties is a major challenge. The availability of such database and models may open the field for environmental engineers and soil scientists to study the basic chemical processes and mechanisms of metal contamination in complex multicomponent systems.

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Conductance of lithium and sodium perchlorates and of some quaternary ammonium halides and perchlorates in a propylene carbonate + tetrahydrofuran mixture at 25 .degree.C

Cited by 5 publications

References 11 publications

Peculiar Properties of Water as Solute

Peculiar Properties of Water as Solute

Excess Molar Enthalpies and Excess Molar Volumes of Propylene Carbonate + Cyclic Ethers

Solution Properties of Inorganic Contamination in Mixed Solvents: Theory, Progress, and Limitations

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