Constants of acid-base equilibria at the ZrO2/electrolyte interface

Authors
Batrakov, VV Khlupov, AY Gorichev, IG Kostrikin, AV Izotov, AD
Citation
Vv. Batrakov et al., Constants of acid-base equilibria at the ZrO2/electrolyte interface, RUSS J PH C, 74, 2000, pp. S553-S558
Citations number
22
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY
ISSN journal
00360244 → ACNP
Volume
74
Year of publication
2000
Supplement
3
Pages
S553 - S558
Database
ISI
SICI code
0036-0244(2000)74:<S553:COAEAT>2.0.ZU;2-R
Abstract
Acid-base equilibria arising at the zirconium oxide/electrolyte interface w ere studied experimentally using potentiometric titration and analysis of t he dependence of the electrokinetic potential on the pH value in aqueous so lutions of potassium chloride of various concentrations. The equilibrium co nstants were calculated. It was found that the two methods give consistent values of acid-base equilibrium constants: pK(1)(0) = 4.0, pK(2)(0) = 9.2, pK(3)(0) = 6.2, and pK(0)(4) = 6.7.