Determination of intrinsic equilibrium constants at alumina/electrolyte interface | Zendy

Žaklina Todorović | Zendy; S.K. Milonjić | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Determination of intrinsic equilibrium constants at alumina/electrolyte interface

Author(s) -

Žaklina Todorović,

S.K. Milonjić

Publication year - 2004

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0412063t

Subject(s) - point of zero charge , electrolyte , potentiometric titration , chemistry , inorganic chemistry , protonation , aqueous solution , equilibrium constant , sorption , ionization , activity coefficient , analytical chemistry (journal) , ion , adsorption , chromatography , organic chemistry , electrode

Intrinsic ionization and complexation constants at an alumina/electrolyte interface were studied by the site binding model, while the sorption of alkali cations from aqueous solutions was interpreted by the triple-layer model. The surface prop- erties of alumina were investigated by the potentiometric acid-base titration method. The point of zero charge (pHpzc) of alumina obtained by this method was found to be 7.2. The obtained mean values of the intrinsic protonation and ionization constants of the surface hydroxyl groups and the intrinsic surface complexation constant, in different electrolytes, are pK int a1 =4 .4, pK int a2 =9 .6 and pK int M + = 9.5, respectively.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research