New metal alkoxides: Synthesis and hydrolysis-condensation reactions; someadsorption features of the hydrolysis-condensation products

In this work, (a) hydrolyses of Ti(OEt)(4) and Zr(OPrn)(4) with different a mounts of water, (b) complexation of the same alkoxides with varying amount s of methacrylic acid, (c) hydrolysis of the complexation products with var ying amounts of water, and subsequent polymerization, (d) adsorption capaci ties of the hydrolysis products (a and c) for aqueous aniline and phenol, w ere investigated. It was found that condensation reactions which follows th e hydrolysis reactions, were alcohol condensations. The products were chara cterized in detail. Adsorption of aniline and phenol were compared for ther mally conditioned powder of the products and some powders coated with 3-gly cidyloxypropyltrimethoxysilane. It was observed that the extent of adsorpti on was influenced significantly by the temperature at which the adsorbents were calcinated by the coating of their surfaces. (C) 1999 Kluwer Academic Publishers.