Anodic behaviors of nickel and platinum in a mixed molten salt of (CH3)4NF·4HF and CsF·2HF at room temperature

Analysis of the Ionic Conduction Behavior in Some Room Temperature Molten Fluorides

“…After observing presence of a peak by 1 H-NMR, the PFG-NMR methods were performed on JNM-AS500 spectrometer in order to determine the self-diffusion coefficients of cation and anion in room temperature molten fluorides such as (CH 3 ) 4 NF·mHF and (CH 3 ) 3 N·mHF in the temperature range of 298 to 343 K, respectively. The self-diffusion coefficients (D) for cation and anion in each molten fluoride were measured by using 1 H nuclei.…”

“…The amount of HF molecule increased with increasing the m value (1,2). In the present study, the self-diffusion coefficients of ions in the (CH 3 ) 3 N·mHF and (CH 3 ) 4 NF·mHF melts were measured by pulsed-field gradient spin-echo (PFG) nuclear magnetic resonance (NMR) methods, and Stoke's radius of each ion was estimated by using Stokes-Einstein equation. Furthermore transference number was also calculated with the provided self-diffusion coefficient.…”

“…Therefore, it is considered that (CF 3 ) 3 N is an important fluorine source for synthesis of fluorocompounds such as medicines and agricultural chemicals (6)(7). (CF 3 ) 3 N can be produced by electrolysis of (CH 3 ) 3 N·mHF or (CH 3 ) 4 NF·mHF melts (5,8). These melts are called room temperature molten salts.…”

“…In the previous study, ionic conductivities and viscosities of (CH 3 ) 3 N·mHF and (CH 3 ) 4 NF·mHF melts have been investigated. Ionic conductivity of the (CH 3 ) 3 N·mHF and (CH 3 ) 4 NF·mHF melts increased with an increase in the m value and temperature, whereas the viscosity decreased. IR spectra were also measured for detecting the anionic species such as (FH) n F -(n = 1~3) and a molecular HF in these melts.…”

“…Furthermore transference number was also calculated with the provided self-diffusion coefficient. In addition, the molar conductivity (/ NMR ) calculated by Nernst-Einstein equation was compared with the experimental molar conductivity (/) of (CH 3 ) 3 N·mHF and (CH 3 ) 4 NF·mHF melts at room temperature.…”