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Please use this identifier to cite or link to this item: https://dspace.ffh.bg.ac.rs/handle/123456789/1458
Title: Isothermal Kinetics of Titanium-oxo-alkoxy Clusters Formation
Authors: Baroš, Z. Z.
Adnađević, Borivoj 
Pavlović, V. B.
Keywords: Hydrolysis;Isothermal kinetics;Titanium tetraisopropoxide;Titanium-oxo-alkoxy clusters formation
Issue Date: 27-May-2011
Journal: Science of Sintering
Abstract: 
In this article, the influences of titanium tetraisopropoxide Ti(OR)4 (R = Pri) concentration, molar ratio, h = [H2O]/[Ti(OR)4], and temperature, on the formation kinetics of the titanium-oxo-alkoxy clusters (TOAC), were studied. The TOAC formation isothermal kinetics was monitored by measuring absorbance changes versus time in the reaction mixture at predefined wavelength λ= 350nm. It was determined that the isothermal rate of clusters formation is a power law function of titanium tetrais opropoxide concentration and the molar concentration of water (cw). The kinetic parameters α and β were calculated. The apparent activation energy Ea values in the clusters formation reaction has been calculated and correlated with the change of titanium tetraisopropoxide concentration and molar ratio. The model for mechanism of TOAC formation is proposed.
URI: https://dspace.ffh.bg.ac.rs/handle/123456789/1458
ISSN: 0350-820X
DOI: 10.2298/SOS1101095B
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University of Belgrade
Faculty of Physical Chemistry
Studentski trg 12-16
11158 Belgrade 118
PAC 105305
SERBIA
University of Belgrade Faculty of Physical Chemistry