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Article Dans Une Revue International Journal of Molecular Sciences Année : 2022

Influence of Metal Salts Addition on Physical and Electrochemical Properties of Ethyl and Propylammonium Nitrate

David Ausín
José Trenzado
  • Fonction : Auteur
Mireille Turmine
Luis Varela
  • Fonction : Auteur
Oscar Cabeza
  • Fonction : Auteur
Elisa González Romero
Luisa Segade

Résumé

In this work, we deepen in the characterization of two protic ionic liquids (PILs), ethylammonium nitrate (EAN) and propylammonium nitrate (PAN). With this aim, we determined the influence of inorganic nitrate salts addition on their physical properties and their electrochemical potential window (EPW). Thus, experimental measurements of electrical conductivity, density, viscosity, refractive index and surface tension of mixtures of {EAN or PAN + LiNO3, Ca(NO3)2, Mg(NO3)2 or Al(NO3)3} at a temperature range between 5 and 95 °C are presented first, except for the last two properties which were measured at 25 °C. In the second part, the corresponding EPWs were determined at 25 °C by linear sweep voltammetry using three different electrochemical cells. Effect of the salt addition was associated mainly with the metal cation characteristics, so, generally, LiNO3 showed the lower influence, followed by Ca(NO3)2, Mg(NO3)2 or Al(NO3)3. The results obtained for the EAN + LiNO3 mixtures, along with those from a previous work, allowed us to develop novel predictive equations for most of the presented physical properties as functions of the lithium salt concentration, the temperature and the water content. Electrochemical results showed that a general order of EPW can be established for both PILs, although exceptions related to measurement conditions and the properties of the mixtures were found.

Domaines

Chimie

Dates et versions

hal-03919970 , version 1 (03-01-2023)

Identifiants

Citer

David Ausín, José Trenzado, Mireille Turmine, Luis Varela, Oscar Cabeza, et al.. Influence of Metal Salts Addition on Physical and Electrochemical Properties of Ethyl and Propylammonium Nitrate. International Journal of Molecular Sciences, 2022, 23 (24), pp.16040. ⟨10.3390/ijms232416040⟩. ⟨hal-03919970⟩
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