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Enthalpy of Surface Reactions: Temperature Dependency of pH of Acidic or Basic Concetrated Hematite Suspension (CROSBI ID 94466)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Preočanin, Tajana ; Krehula, Stjepko ; Kallay, Nikola Enthalpy of Surface Reactions: Temperature Dependency of pH of Acidic or Basic Concetrated Hematite Suspension // Applied surface science, 196 (2002), 1–4; 392-400. doi: 10.1016/S0169-4332(02)00077-6

Podaci o odgovornosti

Preočanin, Tajana ; Krehula, Stjepko ; Kallay, Nikola

engleski

Enthalpy of Surface Reactions: Temperature Dependency of pH of Acidic or Basic Concetrated Hematite Suspension

Temperature dependency of pH of concentrated metal oxide suspension, containing acid or base, was used as a method for determination of total enthalpy of surface reactions. This enthalpy depends on pH due to electrostatic interactions. It is sum of standard (chemical) part and electrostatic contribution. Difference in standard reaction enthalpies of deprotonation and protonation of neutral surface sites for aqueous hematite dispersion was obtained as 42.8 kJ mol-1, while electrostatic contribution decreases with pH, being zero at the point of zero charge.

hematite ; enthalpy ; mass titration ; point of zero charge ; surface reactions ; temperature dependency

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Podaci o izdanju

196 (1–4)

2002.

392-400

objavljeno

0169-4332

10.1016/S0169-4332(02)00077-6

Povezanost rada

Kemija

Poveznice
Indeksiranost