Ionengleichgewichte in nichtwäßrigen Elektrolytlösungen

Barthel, J.

doi:10.1002/cite.330500404

Cited by 11 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The critical distance range can be obtained by the Bjerrum theory, which usually is a criterion to evaluate whether the ion pair is formed or not where z i and z j are the number of cation and anion charges, k B is the Boltzmann constant, ε 0 is a dielectric constant of the vacuum, and ε is the dielectric constant of the solvent. In this work, the dielectric constant of solutions is computed using the Pottel model as follows in which ε is the dielectric constant of the solvent in the presence of electrolytes, ε s is the pure solvent dielectric constant, and ξ 3 ″ is a variable defined as in which N a is the Avogadro number, n i is the number of moles of ion i , σ is the diameter of ion i , and V is the solution volume.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Temperature and Ionic Concentration on Nanodroplet Electrocoalescence

Chen

Zhang

et al. 2018

Langmuir

View full text Add to dashboard Cite

Droplet electrocoalescence is of interest for various applications such as petroleum dehydration, electrospray ionization, and surface self-cleaning. Here, the effects of temperature and ionic concentration on nanodroplet electrocoalescence are investigated by molecular dynamics simulation. The results show that low ionic concentration rapidly drives ions towards water clusters and leads to dipole polarization of droplets. With an increase of ionic concentration, the particle–particle interaction is enhanced, but the mobility of free water molecules and salt ions is curbed by hydration and ion pairs, which then slows the electrocoalescence. Low temperature accelerates the rotation of water molecules but does not enhance the mobility of ions. Alternatively, high temperature not only breaks the self-assembly of water molecules along the electric field direction but also helps ions to overcome the electrostatic barrier between particles. The latter effect promotes dipole polarization to compensate for the shortcoming of less orientation polarization. The combined effects of ion concentration and temperature are investigated and unified by droplet conductivity from the microscopic point of view. The conductivity increases with the increase in temperatures and ionic concentrations. We confirm that the accurate control of droplet electrocoalescence can be achieved by a suitable combination of temperature and ionic concentration.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The critical distance range can be obtained by the Bjerrum theory, which usually is a criterion to evaluate whether the ion pair is formed or not 31…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Effects of Temperature and Ionic Concentration on Nanodroplet Electrocoalescence

Chen

Zhang

et al. 2018

Langmuir

View full text Add to dashboard Cite

show abstract

“…Fuoss has shown that the simple model of charged spheres in a continuum fails completely when the ions are small compared to solvent molecules (90). In another study, models incorporating a term for short-range forces in calculating the energy of interaction between ions are discussed (25). The temperature dependence of the equilibrium constant for ion association permits distinction between different types of short-r¿mge forces.…”

mentioning

confidence: 99%

Titrations in nonaqueous solvents

Kratochvil¹

1980

Anal. Chem.

View full text Add to dashboard Cite

The Temperature Dependence of the Properties of Electrolyte Solutions. I. A Semi‐Phenomenological Approach to an Electrolyte Theory Including Short Range Forces

Barthel

1979

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

Elektrochemie 1 Elektrolytlosungen 1 Thermodynamik I Transporterscheinungen Pair distribution functions fij(rl,r2) of a symmetrical ionophoric electrolyte compound Y = C" A'-in solution are determined with the help of a semi-phenomenological method permitting to avoid a truncated series expansion of the Boltzmann factor exp [ -e, zjcc/i(r)/k TI of Coulomb ion-ion interaction in the vicinity of the i ion and to introduce the mean potential of short range forces. The appropriate chemical potential of the electrolyte component pY@, T ) and the relevant transport equations, especially of electrolyte conductance, are given. The concept of ion association is discussed within the framework of this approach. Die Paarverteilungsfunktionen f i j ( r l , r 2 ) der Ionen eines symmetrischen ionophojen Elektrolyten Y = C" A'in einer Elektrolytlosung werden auf der Grundlage einer semi-phenomenologischen Methode ermittelt, die den Reihenabbruch des Boltzmannfaktors exp [e, z,+,(r)/k T ] der Coulombschen Wechselwirkungsenergie in der Nachbarschaft eines i-Ions vermeidet sowie die Einfiihrung des mittleren Potentials kurzreichender Krafte gestattet. Das daraus abgeleitete chemische Potential der Elektrolytkomponente ,uy(p, T) und die dem Ansatz entsprechenden Transportgleichungen, insbesondere die Leitfahigkeitsgleichungen, werden angegeben. Die Ionenassoziathypothese wird im Rahmen des semi-phenomenologischen Ansatzes diskutiert.

show abstract

Ionengleichgewichte in nichtwäßrigen Elektrolytlösungen

Cited by 11 publications

References 23 publications

Effects of Temperature and Ionic Concentration on Nanodroplet Electrocoalescence

Effects of Temperature and Ionic Concentration on Nanodroplet Electrocoalescence

Titrations in nonaqueous solvents

The Temperature Dependence of the Properties of Electrolyte Solutions. I. A Semi‐Phenomenological Approach to an Electrolyte Theory Including Short Range Forces

Contact Info

Product

Resources

About