This contribution presents the results of the investigation of Mg2+ and Ca2+ 12-tungstophosphoric acid (WPA) salts as superionic proton conductors. We have identified protonic species as charge carriers in several hydration degrees of these salts by IR spectroscopy at low, room and high temperatures. In the IR spectra we have found the characteristic frequencies for H3O+, OH-, H2O, H5O2+. Also, we have investigated the dynamic equilibrium between protonic entities in the function of temperature, as well as the nature and the strength of hydrogen bonds in those compounds. During the process of calcination, these salts undergo a few phase transformations. The temperatures of interest for the further investigations were taken from data of thermal analysis.
Izvor:
South African Journal of Botany, 1999, 125, 1-4, 425-429
TY - JOUR
AU - Mioč, Ubavka B.
AU - Todorović, Marija R.
AU - Colomban, Ph
AU - Nedić, Zoran P.
AU - Uskoković-Marković, Snežana
AU - Borcić, ID
PY - 1999
UR - https://farfar.pharmacy.bg.ac.rs/handle/123456789/225
AB - This contribution presents the results of the investigation of Mg2+ and Ca2+ 12-tungstophosphoric acid (WPA) salts as superionic proton conductors. We have identified protonic species as charge carriers in several hydration degrees of these salts by IR spectroscopy at low, room and high temperatures. In the IR spectra we have found the characteristic frequencies for H3O+, OH-, H2O, H5O2+. Also, we have investigated the dynamic equilibrium between protonic entities in the function of temperature, as well as the nature and the strength of hydrogen bonds in those compounds. During the process of calcination, these salts undergo a few phase transformations. The temperatures of interest for the further investigations were taken from data of thermal analysis.
PB - Elsevier Science BV, Amsterdam
T2 - South African Journal of Botany
T1 - Identification of protonic species and their dynamic equilibrium in magnesium and calcium salts of 12-tungstophosphoric acid
VL - 125
IS - 1-4
SP - 425
EP - 429
DO - 10.1016/S0167-2738(99)00205-2
ER -
@article{
author = "Mioč, Ubavka B. and Todorović, Marija R. and Colomban, Ph and Nedić, Zoran P. and Uskoković-Marković, Snežana and Borcić, ID",
year = "1999",
abstract = "This contribution presents the results of the investigation of Mg2+ and Ca2+ 12-tungstophosphoric acid (WPA) salts as superionic proton conductors. We have identified protonic species as charge carriers in several hydration degrees of these salts by IR spectroscopy at low, room and high temperatures. In the IR spectra we have found the characteristic frequencies for H3O+, OH-, H2O, H5O2+. Also, we have investigated the dynamic equilibrium between protonic entities in the function of temperature, as well as the nature and the strength of hydrogen bonds in those compounds. During the process of calcination, these salts undergo a few phase transformations. The temperatures of interest for the further investigations were taken from data of thermal analysis.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "South African Journal of Botany",
title = "Identification of protonic species and their dynamic equilibrium in magnesium and calcium salts of 12-tungstophosphoric acid",
volume = "125",
number = "1-4",
pages = "425-429",
doi = "10.1016/S0167-2738(99)00205-2"
}
Mioč, U. B., Todorović, M. R., Colomban, P., Nedić, Z. P., Uskoković-Marković, S.,& Borcić, I.. (1999). Identification of protonic species and their dynamic equilibrium in magnesium and calcium salts of 12-tungstophosphoric acid. in South African Journal of Botany
Elsevier Science BV, Amsterdam., 125(1-4), 425-429.
https://doi.org/10.1016/S0167-2738(99)00205-2
Mioč UB, Todorović MR, Colomban P, Nedić ZP, Uskoković-Marković S, Borcić I. Identification of protonic species and their dynamic equilibrium in magnesium and calcium salts of 12-tungstophosphoric acid. in South African Journal of Botany. 1999;125(1-4):425-429.
doi:10.1016/S0167-2738(99)00205-2 .
Mioč, Ubavka B., Todorović, Marija R., Colomban, Ph, Nedić, Zoran P., Uskoković-Marković, Snežana, Borcić, ID, "Identification of protonic species and their dynamic equilibrium in magnesium and calcium salts of 12-tungstophosphoric acid" in South African Journal of Botany, 125, no. 1-4 (1999):425-429,
https://doi.org/10.1016/S0167-2738(99)00205-2 . .
