Transference Numbers of Potassium Ion in Solutions of Potassium Bromide in Methanol and Potassium Thiocyanate in Methanol and in Ethanol at 25°

1955 ◽  
Vol 59 (1) ◽  
pp. 84-86 ◽  
Author(s):  
Joe Smisko ◽  
Lyle R. Dawson
Keyword(s):  
Potassium Thiocyanate ◽  
Potassium Bromide ◽  
Potassium Ion ◽  
Transference Numbers

Preparation and characterization of novel potassium ion conducting nanocomposite polymer electrolytes based on PEMA

2021 ◽  
pp. 009524432110386
Author(s):  
S Jayanthi ◽  
GP Kokila ◽  
S Shenbagavalli ◽  
B Sundaresan
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Potassium Thiocyanate ◽  
Potassium Ion ◽  
Ion Concentration ◽  
Remarkable Change ◽  
Casting Technique ◽  
Nanocomposite Polymer ◽  
Ion Conducting ◽  
Nanocomposite Polymer Electrolytes

Potassium ion conducting nanocomposite polymer electrolytes was prepared by employing the solvent casting technique. Poly ethyl methacrylate (PEMA), potassium thiocyanate (KSCN) and nano-strontium titanate (SrTiO3) (<100 nm) was used as a polymer host, an electrolyte and a filler, respectively. The complex formation between PEMA, KSCN and SrTiO3 was confirmed through Fourier transform infrared (FTIR) and X-ray diffraction (XRD) analysis, respectively. This system exhibited two ionic conductivity maxima, but the sample, PEMA/KSCN/4 wt% SrTiO3 delivered a maximum ionic conductivity of 3.07 × 10−5 Scm−1 at room temperature, which was 102 times greater than that of PEMA/KSCN system. Truckhan model was employed to determine the diffusion coefficient, mobility and mobile ion concentration of the system. The remarkable change in surface morphology of the sample was observed through Scanning Electron Microscopy (SEM) micrograph.

scholarly journals DC Conductivity and Transference number in pure and potassium thiocyanate-doped polyvinyl alcohol films

2019 ◽  
Vol 16 (2) ◽  
pp. 136-141
Author(s):  
N. Nagaraj ◽  
P. Mohan Babu ◽  
K. V. Ramesh Babu
Keyword(s):  
Charge Transport ◽  
Polymer Electrolyte ◽  
Transference Number ◽  
Potassium Thiocyanate ◽  
Dc Conductivity ◽  
Transference Numbers ◽  
Poly Vinyl Alcohol ◽  
Electrolyte System ◽  
Solution Cast ◽  
Cast Technique

Poly (vinyl alcohol) (PVA) – based solid electrolyte films with potassium thiocyanate (KSCN) were prepared by solution-cast technique. The pure and KSCN- doped PVA films have been investigated for the charge transport mechanism in the polymer electrolyte system by using the DC conductivity (The composition dependence and temperature dependence in 300-385K range) and transference number measurements. The graphs related to conductivity – temperature shows that an increase in conductivity with respect to rise in the temperature. At room temperature, the conductivity of the (PVA+KSCN) electrolyte is 102 times greater than that of pure PVA. The transference number data exhibit that the charge transport in this polymer electrolyte system is predominantly due to ions. The ionic transference numbers (tion) lies in the range of 0.92 to 0.99 for the films of PVA with KSCN in the wt% ratios (90:10), (80:20) and (70:30).

Physico-chemical studies in non-aqueous solvents. X. Conductance and solvation studies of 1 : 1 electrolytes in N,N-dimethylacetamide

1975 ◽  
Vol 28 (2) ◽  
pp. 321 ◽  
Author(s):  
RC Paul ◽  
JS Banait ◽  
SP Narula
Keyword(s):  
Potassium Thiocyanate ◽  
Transference Numbers ◽  
Size Parameter ◽  
Ionic Radii ◽  
Solvation Numbers ◽  
Physico Chemical ◽  
Conductance Data ◽  
Chemical Studies ◽  
Ionic Mobilities ◽  
Ion Size

Conductances of some 1 : 1 electrolytes have been measured in the concentration range 1-120 x 10-4 mol l-1 in N,N-dimethylacetamide at 25�. The conductance data have been analysed by Fuoss-Onsager-Skinner equations for dissociated and associated electrolytes, and limiting equivalent conductances, ion-size parameter and association constants (where appropriate) for various electrolytes have been obtained. The ion-size parameter (3.7 � 0.3Ǻ) has been found to be about the same for all the electrolytes. Alkali metal salts are fully dissociated while the substituted ammonium salts are slightly associated in this solvent. The ionic association increases with increase in the size of cations. Transference numbers of lithium chloride, potassium thiocyanate and silver perchlorate have also been measured in the concentration range 1.1-18.4 x 10-2mol l-1 in this solvent. Limiting cation transference numbers are determined from the linear plots of cation transference numbers against square root of concentration. Ionic mobilities, effective ionic radii and solvation numbers of various ions in solution have been calculated. Higher solvation numbers of cations than those of anions of comparable sizes are consistent with the aprotic nature of the solvent.

Myrsinane and related diterpenes from Euphorbia falcata with selective potassium ion channel activity

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
A Vasas ◽  
P Orvos ◽  
L Tálosi ◽  
P Forgo ◽  
G Pinke ◽  
...  
Keyword(s):  
Ion Channel ◽  
Potassium Ion ◽  
Channel Activity ◽  
Potassium Ion Channel

A neutron-diffraction study of potassium bromide

1973 ◽  
Vol 137 (4) ◽  
Author(s):  
G. E. Bacon ◽  
D. H. Titterton ◽  
C. R. Walker
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Data ◽  
Diffuse Scattering ◽  
Scattering Amplitude ◽  
Coherent Scattering ◽  
Neutron Diffraction Study ◽  
Potassium Bromide ◽  
Neutron Diffraction Data ◽  
Thermal Diffuse Scattering ◽  
Thermal Diffuse

AbstractNeutron-diffraction data have been collected from a KBr single crystal. 380 reflections were measured, reducing to 23 when averaged over equivalents. Data were corrected for extinction and thermal diffuse scattering and refinement yielded a neutron coherent scattering amplitude

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