Electrochemical Investigation of the Solvolytic Properties of Ethylammonium Nitrate (EAN) and Propylammonium Nitrate (PAN)

Abstract

Ethylammonium nitrate (EAN) and propylammonium nitrate (PAN) are unique fused ionic media which have received relatively little attention despite their unusual physical and chemical properties. As a consequence very few applications for these media have been described in the literature. The utility of EAN and PAN as conductive solvents suitable for electrochemical analysis was examined by carrying out cyclic voltammetric analyses of ferrocene, ethylferrocene, and acetylferrocene dissolved in these molten media. Reversibility was observed for the ferrocene redox systems in EAN while those in PAN were not quite as well behaved. A comparison of the diffusion coef®cient of ferrocene in EAN and PAN employing both Stokes-Einstein values and values derived from chronocoulometry shows that diffusion is very slow and nearly ideal in these solvents.

Electrochemical studies of ferrocene in a lithium ion conducting organic carbonate electrolyte

“…The hydrodynamic radius is influenced by a number of factors such as solubility of analyte, solvent molecule size and polarity of the solvents. In this case we decided to use the crystallographic radius of ferrocene (0.32 nm) [23]. The dynamic viscosity (4.65 cP) was calculated from the solution's kinematic viscosity (0.0372 cm 2 s −1 ) and density (1.25 g cm −3 ) we measured.…”

Voltammetric Determination of Diffusion Coefficients in Polymer Membranes: Guidelines to Minimize Errors

“…3) or the intercept (Eq. 4) of the scan rate dependence of LSVs recorded with a particular electrode, is in agreement with the diffusion coefficient of ferrocene calculated from the Stokes‐Einstein formula ( D = using 0.32 nm as the hydrodynamic radius of ferrocene and as the dynamic viscosity for o‐NPOE . With increasing electrode sizes the Randles‐Sevcik estimate of the diffusion coefficient (Eq.…”

A comparative study of the electrodeposition of polyaniline from a protic ionic liquid, an aprotic ionic liquid and neutral aqueous solution using anilinium nitrate

“…Deposition of polyaniline in protic ionic liquids Ethylammonium nitrate, EAN, was first reported in 1914 by Walden, 26 and is the most commonly reported PIL in the literature, and one of the first PILs to have its electrochemical properties investigated. 27,28 The cyclic voltammetry of the neat EAN was initially characterised to serve as a baseline. The voltage limits of the EAN used as an electrolyte were determined by cycling the potential at 20 mV s À1 with a 100 mm diameter Pt working electrode (Fig.…”