Abstract
This work proposed the application of hybrid silica, with different surface hydration characteristics-behavior-properties, as silicon source in Sodalite synthesis, in order to demonstrate through experimental data that if zeolite formation is ruled by surface reactions, these may be dependent of water amount on the surface. The surfaces of the systems were investigated using of Attenuated Total Reflectance Fourier Transformed Infrared spectroscopy (FTIR-ATR) techniques, while the hydrophilic/hydrophobic behavior was studied by wettability using Static Contact Angle analyses. The influence of hydrophilic/hydrophobic properties and hydrated surface as well, on zeolite formation, was investigated through X-ray Diffraction analyses. The results agree with the proposal, showing a faster zeolite formation (24 h) when hydrophilic silica is used (SG2B), while the time of zeolite formation seems to increase according to increasing in silica hydrophobicity (24 h for SGC1B, 48 h for SGC8B and 72 h for SGC18B).
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