Calculations of acid-base equilibrium constants from the pH dependence of the electrokinetic potential and potentiometric titration data on aluminum oxides and hydroxides

Authors
Nevskaya, EY Gorichev, IG Kuchkovskaya, OV Zaitsev, BE Gorichev, AI Izotov, AD
Citation
Ey. Nevskaya et al., Calculations of acid-base equilibrium constants from the pH dependence of the electrokinetic potential and potentiometric titration data on aluminum oxides and hydroxides, RUSS J PH C, 73(9), 1999, pp. 1421-1426
Citations number
29
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY
ISSN journal
00360244 → ACNP
Volume
73
Issue
9
Year of publication
1999
Pages
1421 - 1426
Database
ISI
SICI code
0036-0244(199909)73:9<1421:COAECF>2.0.ZU;2-F
Abstract
A comparative analysis of calculated acid-base equilibrium constants at the aluminum oxide(hydroxide)/solution interface is presented. The constants w ere obtained from the experimental pH dependences of the electrokinetic pot ential and potentiometric titration curves for Al2O3, AlOOH suspensions. Th e equilibrium constants and pH(zcp) values underwent displacement to the al kaline region as the degree of oxide hydration increased.